A shipboard communication system and method

Abstract

This invention relates to the field of shipborne communication technology, specifically disclosing a shipborne communication system and method. The invention constructs a four-layer collaborative architecture comprising a shore-based wireless relay access unit, a mother ship communication hub unit, a UAV communication carrier unit, and an AAU communication coverage unit. It establishes a dynamic UAV communication link directly connected to a ship-shore wireless relay backbone and optical fiber, solving problems such as high latency and cost of satellite communication, limited coverage of shore-based communication, insufficient capacity of traditional ship-to-ship communication, poor deployment flexibility in emergency scenarios, and difficulties in multi-system coordination. This achieves improved capabilities in rapidly constructing communication networks in areas without public network coverage at sea, enhancing data transmission stability in complex electromagnetic environments, and improving communication support levels for multi-scenario operations.

Description

Technical Field

[0001] This invention relates to the field of shipborne communication technology, and in particular to a shipborne communication system and method. Background Technology

[0002] In various maritime and nearshore scenarios, including marine development, emergency rescue, maritime law enforcement, island protection, and scientific research and exploration, the coverage and stability of communication networks directly determine operational efficiency, safety assurance levels, and mission completion rates. With the continuous improvement of the intelligence and collaboration in maritime operations, various application scenarios are placing higher demands on data transmission rates, real-time communication, and network coverage.

[0003] Currently, maritime communication mainly relies on three methods: satellite communication, shore-based wireless communication, and direct ship-to-ship communication, but all have significant limitations. Although satellite communication has wide-area coverage capabilities, the cost of bandwidth leasing is extremely high, communication latency is large, and it is susceptible to interference from severe weather conditions, making it difficult to support the high-frequency broadband service requirements such as high-definition video transmission, real-time command and dispatch, and multi-source data fusion. Shore-based wireless communication (4G / 5G public networks) is limited by the base station's transmission power and antenna height, and its effective coverage area usually only covers an area of ​​tens of kilometers near the shore, leaving the far sea and remote waters completely without signal coverage, which cannot meet the communication needs of deep-sea operations. Traditional ship-to-ship communication mostly uses technologies such as Very High Frequency (VHF) or maritime satellite phones, which have low data transmission rates, limited channel capacity, and weak resistance to electromagnetic interference, making them unsuitable for application scenarios in modern operations where multiple terminals collaborate and interact, and massive amounts of sensor data are aggregated in real time.

[0004] Existing technologies also have significant shortcomings in addressing emergency communication needs in areas with no signal coverage. Fixed base station construction requires a lengthy process involving site selection, civil engineering, and equipment debugging, resulting in high investment costs, poor deployment flexibility, and an inability to quickly respond to temporary communication needs during emergencies. Portable communication devices, while offering some mobility, suffer from limited transmission power, leading to small coverage areas, weak signal penetration, and a lack of stable backhaul links. Some UAV communication solutions utilize wireless backhaul to construct temporary coverage networks, but these are susceptible to multipath interference and signal attenuation in complex marine electromagnetic environments, resulting in high data loss rates, insufficient transmission reliability, and a lack of unified data interfaces and collaborative scheduling mechanisms with shore-based command systems and shipboard operational platforms. This hinders the formation of complete end-to-end communication links, creating information silos and service fragmentation.

[0005] In recent years, wireless relay communication technology has been widely used in medium- and long-distance mobile communication due to its advantages of flexible deployment, no wiring required, and adaptability to dynamic scenarios. The maturity of UAV platforms has provided a feasible carrier for the rapid deployment of aerial communication nodes and the realization of flexible networking. However, existing technologies only have single application cases of using wireless relay for temporary ship-to-shore communication or using UAVs for local signal coverage. A three-layer integrated collaborative communication architecture of "ship-to-shore wireless relay backbone link + UAV dynamic blind spot extension + active antenna unit (AAU) wide-area coverage" has not yet been formed, which cannot systematically solve the comprehensive communication needs of rapid deployment, stable transmission, and wide-area coverage in multiple scenarios.

[0006] Therefore, there is an urgent need to provide a technical solution to address the above problems. Summary of the Invention

[0007] To address the aforementioned technical problems, this invention provides a shipborne communication system and method.

[0008] In a first aspect, the present invention provides a shipborne communication system, the technical solution of which is as follows: The shore-side wireless relay access unit is deployed on the shore and communicates with the shore-side public network. The mothership communication hub unit is deployed on the mothership and establishes a wireless relay link with the shore-based wireless relay access unit; The UAV communication carrier unit is mounted on the mother ship and is connected to the mother ship's communication hub unit via a wired fiber optic link; AAU communication coverage unit, mounted on the UAV communication carrier unit; The shore-side wireless relay access unit is used to perform protocol adaptation and signal conversion between the wireless relay link and the shore-side public network; The mothership communication hub unit is used to transmit data with the shore-based wireless relay access unit through the wireless relay link, transmit data with the UAV communication carrier unit through the wired fiber optic link, and forward the data transmitted between the wireless relay link and the wired fiber optic link. The mothership communication hub unit is also used to generate UAV control commands and send them to the UAV communication carrier unit through the wired fiber optic link. The UAV communication carrier unit is used to fly to the target area according to the UAV control command, and during the flight, it releases or retrieves the optical fiber corresponding to the wired optical fiber link through the optical fiber take-up and release mechanism to maintain the wired optical fiber link with the mother ship communication hub unit. The AAU communication coverage unit is used to transmit communication signals to build a temporary communication network after the UAV communication carrier unit flies to the target area, and to receive data signals from terminal devices in the target area through the temporary communication network. The UAV communication carrier unit is used to receive the data signal from the AAU communication coverage unit and transmit the data signal to the mother ship communication hub unit through the wired optical fiber link, so that the mother ship communication hub unit transmits the data signal to the shore wireless relay access unit through the wireless relay link.

[0009] The beneficial effects of the shipborne communication system of the present invention are as follows: The system of this invention constructs a four-layer collaborative architecture consisting of a shore-based wireless relay access unit, a mother ship communication hub unit, an UAV communication carrier unit, and an AAU communication coverage unit. It establishes a dynamic communication link between the ship-shore wireless relay backbone link and the UAV directly connected by optical fiber. This solves the problems of high latency and cost of satellite communication, limited coverage of shore-based communication, insufficient capacity of traditional ship-to-ship communication, poor deployment flexibility in emergency scenarios, and difficulties in multi-system coordination. It achieves the ability to quickly build communication networks in areas without public network coverage at sea, improves the stability of data transmission in complex electromagnetic environments, and enhances the level of communication support for multi-scenario operations.

[0010] Based on the above solution, the shipborne communication system of the present invention can be further improved as follows.

[0011] In one alternative embodiment, the shore-based wireless relay access unit includes a wireless relay terminal device and a link adaptation module; The wireless relay terminal device is communicatively connected to the wireless relay link. The wireless relay terminal device is used to convert wireless signals from the wireless relay link into electrical signals and output them to the link adaptation module, and to convert electrical signals from the link adaptation module into wireless signals and send them to the wireless relay link. The link adaptation module is communicatively connected to both the wireless relay terminal device and the shore-side public network. The link adaptation module is used to detect the communication protocol type of the wireless relay link, convert the electrical signal output by the wireless relay terminal device into an electrical signal with a protocol format matching the shore-side public network according to the communication protocol type, and then output it to the shore-side public network. Conversely, it converts the electrical signal from the shore-side public network into an electrical signal with a protocol format matching the wireless relay terminal device and then outputs it to the wireless relay terminal device.

[0012] The advantages of adopting the above-mentioned optional method are as follows: further realizing bidirectional conversion between wireless signals and electrical signals through wireless relay terminal equipment, and using the link adaptation module to detect the communication protocol type of the wireless relay link, completing the protocol format conversion between the wireless relay link and the shore public network, expanding the interconnection capability of heterogeneous networks, and improving the protocol compatibility and data transmission smoothness of the ship-shore communication link.

[0013] In one alternative embodiment, the shore-based wireless relay access unit further includes a protective device; The protective device covers the outside of the wireless relay terminal equipment and the link adapter module, and the protective device is used to isolate the external environment from the corrosion of the wireless relay terminal equipment and the link adapter module.

[0014] The advantages of adopting the above-mentioned optional method are as follows: by further covering the wireless relay terminal equipment and link adapter module with protective devices, the corrosion of coastal environmental factors such as salt spray, humidity and temperature fluctuations is isolated, the service life of shore-end equipment under harsh working conditions is extended, and the long-term stable operation of the ship-shore wireless relay backbone link is guaranteed.

[0015] In one alternative embodiment, the mothership communication hub unit includes a wireless relay connection and distribution module, a data processing and forwarding module, and an unmanned aerial vehicle (UAV) control module. The wireless relay connection and distribution module is communicatively connected to the wireless relay link, and is used to establish a data connection with the wireless relay terminal device through the wireless relay link; the wireless relay connection and distribution module is also connected to the wired optical fiber link, and is used to establish a data connection with the UAV communication carrier unit through the wired optical fiber link. The data processing and forwarding module is connected to the wireless relay connection and distribution module and the UAV control module, respectively. The data processing and forwarding module is used to receive first data obtained by the wireless relay connection and distribution module from the wireless relay link and forward the first data to the UAV control module. The data processing and forwarding module is also used to receive second data obtained by the UAV control module from the wired optical fiber link and forward the second data to the wireless relay connection and distribution module. The UAV control module is connected to the wired fiber optic link. The UAV control module is used to generate the UAV control commands and send the UAV control commands to the UAV communication carrier unit through the wired fiber optic link. The UAV control module is also used to receive the data signal uploaded by the UAV communication carrier unit through the wired fiber optic link and transmit the data signal as the second data to the data processing and forwarding module.

[0016] The advantages of adopting the above-mentioned optional method are as follows: further establishing a data connection between the wireless relay link and the wired fiber optic link through the wireless relay connection and distribution module, realizing bidirectional data forwarding between the two types of links with the help of the data processing and forwarding module, and generating control commands and receiving data signals based on the UAV control module, thereby optimizing the data scheduling efficiency of the mother ship communication hub and the collaborative response speed of the UAV.

[0017] In one alternative embodiment, the mothership communication hub unit further includes a power supply and protection module; The power supply and protection module is electrically connected to the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module, respectively. The power supply and protection module is used to provide power to the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module. The power supply and protection module is also covered outside the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module to isolate them from external environmental interference.

[0018] The advantages of adopting the above-mentioned optional method are: to further provide power to the wireless relay connection and distribution module, data processing and forwarding module and UAV control module through the power supply and protection module, and to cover the above modules to isolate them from environmental erosion, thus ensuring the continuous power supply capability and equipment operation reliability of the mother ship communication hub under complex working conditions at sea.

[0019] In one alternative embodiment, the UAV communication carrier unit includes the UAV body, an optical fiber take-up and take-down mechanism, a mounting interface module, and a status monitoring module. The drone body and the drone control module are connected via the wired fiber optic link. The drone body is used to receive the drone control commands sent by the drone control module and fly to the target area according to the drone control commands. The fiber optic take-up and release mechanism is installed on the UAV body. The fiber optic take-up and release mechanism includes a fiber optic spool, a take-up and release motor, a guide device, and a tension control module. The fiber optic spool is used to wind the fiber optic cable corresponding to the wired fiber optic link. The take-up and release motor is driven to rotate the fiber optic spool to release or retract the fiber optic cable. The guide device is located between the fiber optic spool and the outside of the UAV body to guide the take-up and release direction of the fiber optic cable. The tension control module is electrically connected to the take-up and release motor. The tension control module is used to detect the tension value of the fiber optic cable and control the rotation speed of the take-up and release motor according to the tension value, so that the fiber optic cable maintains a connection with the UAV control module during the flight of the UAV body. The mounting interface module is fixed to the UAV body, and the mounting interface module is used to connect to the AAU communication coverage unit; The status monitoring module is installed on the UAV body and connected to the wired fiber optic link. The status monitoring module is used to collect flight status data of the UAV body and connection status data of the fiber optic link, and send the flight status data and the connection status data to the UAV control module through the wired fiber optic link.

[0020] The advantages of adopting the above-mentioned optional method are as follows: the optical fiber is further wound around the optical fiber spool by the optical fiber take-up and release mechanism, the take-up and release motor drives the spool to rotate to release or retrieve the optical fiber, the guide device guides the take-up and release direction, and the tension control module detects the optical fiber tension and adjusts the speed of the take-up and release motor, so that the optical fiber maintains a stable connection with the mother ship during the flight of the UAV, avoiding the risk of link interruption or optical fiber damage.

[0021] In one alternative embodiment, the AAU communication coverage unit includes an AAU communication module and a signal transceiver antenna; The AAU communication module is connected to the mounting interface module. The AAU communication module is used to dynamically adjust the transmission power according to the coverage of the target area after the UAV body flies to the target area, and transmit the communication signal. The signal transceiver antenna is connected to the AAU communication module. The signal transceiver antenna is used to radiate the communication signal to the target area, construct the temporary communication network covering the target area, and receive the data signal of the terminal device in the target area through the temporary communication network and transmit the data signal to the AAU communication module. The AAU communication module is also used to transmit the data signal to the UAV body through the mounting interface module.

[0022] The advantages of adopting the above-mentioned optional method are as follows: after the UAV arrives at the target area, the transmission power is dynamically adjusted and communication signals are transmitted through the AAU communication module. The signal is radiated to the target area by the signal transceiver antenna to build a temporary communication network. The data signals of the terminal equipment are received and transmitted back to the AAU communication module, which expands the coverage of maritime emergency communication and the flexibility of network construction.

[0023] In one alternative embodiment, the AAU communication coverage unit further includes a power module and a protective housing; The power module is electrically connected to the AAU communication module and the signal transceiver antenna respectively, and the power module is used to provide power to the AAU communication module and the signal transceiver antenna; The protective housing covers the AAU communication module, the signal transceiver antenna, and the power module, and is used to isolate the AAU communication module, the signal transceiver antenna, and the power module from external environmental corrosion.

[0024] The advantages of adopting the above-mentioned optional method are as follows: power is further supplied to the AAU communication module and signal transceiver antenna through the power module, and the protective shell is used to cover the outside of the above components to isolate them from environmental corrosion, thus ensuring the energy supply independence and high-altitude operating environment adaptability of the AAU communication coverage unit when it is mounted on the UAV.

[0025] In one alternative approach, the UAV body is used to receive the data signal from the AAU communication module through the mounted interface module, and transmit the data signal to the status monitoring module; The status monitoring module is used to transmit the data signal to the UAV control module through the wired optical fiber link; The UAV control module is used to transmit the data signal as the second data to the data processing and forwarding module; The data processing and forwarding module is used to forward the second data to the wireless relay connection and distribution module; The wireless relay connection and distribution module is used to send the second data to the wireless relay terminal device through the wireless relay link.

[0026] The advantages of adopting the above-mentioned optional method are as follows: the UAV body receives data signals from the AAU communication module and transmits them to the status monitoring module. The status monitoring module sends the data signals to the UAV control module. The UAV control module transmits the data signals as the second data to the data processing and forwarding module. The data processing and forwarding module forwards the second data to the wireless relay connection and distribution module. The wireless relay connection and distribution module sends the second data to the wireless relay terminal device through the wireless relay link, thus constructing an end-to-end data transmission channel from the target area terminal device to the shore public network, realizing multi-node collaborative data backhaul and network interconnection.

[0027] Secondly, the present invention provides a shipborne communication method, employing a shipborne communication system as provided by the present invention. The technical solution of the shipborne communication method is as follows: The shore-side wireless relay access unit performs protocol adaptation and signal conversion between the wireless relay link and the shore-side public network; The mothership communication hub unit transmits data to the shore-based wireless relay access unit via the wireless relay link, transmits data to the UAV communication carrier unit via the wired fiber optic link, and forwards the data transmitted between the wireless relay link and the wired fiber optic link. The mothership communication hub unit generates UAV control commands and sends them to the UAV communication carrier unit via the wired fiber optic link. The UAV communication carrier unit flies to the target area according to the UAV control command, and releases or retrieves the optical fiber corresponding to the wired optical fiber link through the optical fiber take-up and release mechanism during the flight, so as to maintain the wired optical fiber link with the mother ship communication hub unit. The AAU communication coverage unit transmits communication signals to construct a temporary communication network after the UAV communication carrier unit flies to the target area, and receives data signals from terminal devices in the target area through the temporary communication network. The UAV communication carrier unit receives the data signal from the AAU communication coverage unit and transmits the data signal to the mother ship communication hub unit through the wired optical fiber link, so that the mother ship communication hub unit transmits the data signal to the shore wireless relay access unit through the wireless relay link.

[0028] The beneficial effects of the shipborne communication method of the present invention are as follows: The method of this invention constructs a four-layer collaborative architecture consisting of a shore-based wireless relay access unit, a mother ship communication hub unit, an UAV communication carrier unit, and an AAU communication coverage unit. It establishes a dynamic communication link between the ship-shore wireless relay backbone link and the UAV directly connected by optical fiber. This solves the problems of high latency and cost of satellite communication, limited coverage of shore-based communication, insufficient capacity of traditional ship-to-ship communication, poor deployment flexibility in emergency scenarios, and difficulties in multi-system coordination. It achieves the ability to quickly build communication networks in areas without public network coverage at sea, improves the stability of data transmission in complex electromagnetic environments, and enhances the level of communication support for multi-scenario operations.

[0029] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0030] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of an embodiment of a shipborne communication system according to the present invention; Figure 2 This is a schematic diagram of a typical scenario for a shipborne communication system. Figure 3 This is a diagram of the shipborne communication system architecture. Figure 4 A signal flow diagram for the corresponding method of the shipborne communication system; Figure 5 This is a flowchart illustrating an embodiment of a shipborne communication method according to the present invention. Detailed Implementation

[0031] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0032] Figure 1 A schematic diagram of an embodiment of a shipborne communication system 10 provided by the present invention is shown. Figure 1 As shown, the shipborne communication system 10 includes: The shore-side wireless relay access unit 11 is deployed on the shore and communicates with the shore-side public network.

[0033] Among them, the shore-side public network refers to the public communication network deployed on the land side; for example, when carrying out emergency rescue missions in sea area A, the shore-side public network is the fourth-generation or fifth-generation mobile communication network accessed by the rescue command center located in city B.

[0034] The mother ship communication hub unit 12 is deployed on the mother ship and has a wireless relay link established with the shore-based wireless relay access unit 11.

[0035] The term "mother ship" refers to a large vessel that serves as a mobile communication hub, carrying the UAV communication carrier unit 13 and establishing a communication connection with the shore. For example, when conducting an emergency rescue mission in sea area A, the mother ship is a 3,000-ton displacement rescue command vessel, anchored 5 nautical miles from the accident site. The "wireless relay link" refers to the wireless communication connection channel established between the mother ship's communication hub unit 12 and the shore-based wireless relay access unit 11. For example, when conducting an emergency rescue mission in sea area A, the mother ship establishes a point-to-point wireless relay link with the shore-based base station using 5.8 GHz frequency band wireless relay equipment, with a transmission bandwidth of 100 Mbps.

[0036] The UAV communication carrier unit 13 is mounted on the mother ship and is connected to the mother ship communication hub unit 12 via a wired fiber optic link.

[0037] Among them, the wired fiber optic link refers to the physical communication connection established between the UAV communication carrier unit 13 and the mother ship communication hub unit 12 through optical fiber; for example, when performing emergency rescue missions in sea area A, the UAV is connected to the mother ship communication hub unit 12 through a special optical fiber with a length of 5km, the optical fiber diameter is 3mm, and the outer layer is wrapped with Kevlar reinforced sheath.

[0038] AAU communication coverage unit 14 is mounted on UAV communication carrier unit 13.

[0039] The shore-side wireless relay access unit 11 is used to perform protocol adaptation and signal conversion between the wireless relay link and the shore-side public network.

[0040] Protocol adaptation refers to the format conversion of signals from different communication protocols, enabling heterogeneous networks to communicate with each other. For example, when performing emergency rescue missions in Sea Area A, the shore-based wireless relay access unit 11 converts the proprietary communication protocol used by the wireless relay link into a transmission control protocol or Internet Protocol commonly used by the shore-based public network. Signal conversion refers to the process of converting between wireless signals and electrical signals. For example, when performing emergency rescue missions in Sea Area A, the shore-based wireless relay access unit 11 converts the 5.8GHz radio frequency signal received from the wireless relay link into a baseband electrical signal and sends it to the shore-based public network for processing.

[0041] The mother ship communication hub unit 12 is used to transmit data with the shore-side wireless relay access unit 11 via a wireless relay link, transmit data with the UAV communication carrier unit 13 via a wired fiber optic link, and forward the data transmitted between the wireless relay link and the wired fiber optic link. The mother ship communication hub unit 12 is also used to generate UAV control commands and send them to the UAV communication carrier unit 13 via the wired fiber optic link.

[0042] Among them, the UAV control command refers to the flight control command generated by the mother ship communication hub unit 12 and sent to the UAV communication carrier unit 13; for example, when performing an emergency rescue mission in sea area A, the mother ship communication hub unit 12 generates a control command containing parameters such as "take-off, climb to an altitude of 300m, fly to A°B′N, C°D′E, and hover", and sends it to the UAV through a wired fiber optic link.

[0043] The UAV communication carrier unit 13 is used to fly to the target area according to the UAV control command, and during the flight, it releases or retrieves the optical fiber corresponding to the wired optical fiber link through the optical fiber release and take-up mechanism to maintain the wired optical fiber link with the mother ship communication hub unit 12.

[0044] The target area refers to the sea area or nearshore area where a temporary communication network needs to be established. For example, when carrying out an emergency rescue mission in sea area A, the target area is a circular sea area with a radius of 5 km around the location of the accident vessel, where there is no public network signal coverage. The fiber optic deployment and retrieval mechanism refers to the mechanical device installed on the UAV for automatically releasing and retrieving optical fibers during flight. For example, when carrying out an emergency rescue mission in sea area A, after the UAV takes off, the fiber optic deployment and retrieval mechanism releases the optical fiber at a speed of 2 m / s, and when the UAV returns to the mother ship, it retrieves the optical fiber at a speed of 1.5 m / s, ensuring that the optical fiber is always taut and does not become tangled.

[0045] The AAU communication coverage unit 14 is used to transmit communication signals to build a temporary communication network after the UAV communication carrier unit 13 flies to the target area, and to receive data signals from terminal devices in the target area through the temporary communication network.

[0046] The temporary communication network refers to a temporary mobile communication coverage network constructed by the AAU communication coverage unit 14 transmitting communication signals in the target area. For example, when carrying out an emergency rescue mission in sea area A, the AAU communication coverage unit 14 transmits fourth-generation mobile communication signals in the 2.6 GHz band over the accident sea area to construct a temporary cellular network with a coverage radius of 3 km for use by on-site rescue personnel.

[0047] Terminal equipment refers to user communication terminals connected to the temporary communication network within the target area; for example, when carrying out emergency rescue missions in sea area A, terminal equipment includes explosion-proof walkie-talkies carried by rescue personnel, law enforcement recorders, and smartphones used by crew members of the accident vessel. Data signal refers to the information carrier transmitted by the terminal equipment to the AAU communication coverage unit 14 through the temporary communication network; for example, when carrying out emergency rescue missions in sea area A, the data signal is a 1080P high-definition video stream collected by rescue personnel through a law enforcement recorder, with a bitrate of 4Mbps.

[0048] The UAV communication carrier unit 13 is used to receive data signals from the AAU communication coverage unit 14 and transmit the data signals to the mother ship communication hub unit 12 through a wired optical fiber link, so that the mother ship communication hub unit 12 can transmit the data signals to the shore wireless relay access unit 11 through a wireless relay link.

[0049] The technical solution of this embodiment constructs a four-layer collaborative architecture consisting of a shore-based wireless relay access unit, a mother ship communication hub unit, an UAV communication carrier unit, and an AAU communication coverage unit. It establishes a dynamic communication link between the ship-shore wireless relay backbone link and the UAV directly connected by optical fiber. This solves the problems of high latency and cost of satellite communication, limited coverage of shore-based communication, insufficient capacity of traditional ship-to-ship communication, poor deployment flexibility in emergency scenarios, and difficulties in multi-system coordination. It achieves the ability to quickly build communication networks in areas without public network coverage at sea, improves the stability of data transmission in complex electromagnetic environments, and enhances the level of communication support for multi-scenario operations.

[0050] In one alternative embodiment, the shore-side wireless relay access unit 11 includes a wireless relay terminal device and a link adaptation module.

[0051] The wireless relay terminal device is connected to the wireless relay link for communication. The wireless relay terminal device is used to convert the wireless signal from the wireless relay link into an electrical signal and output it to the link adapter module, and to convert the electrical signal from the link adapter module into a wireless signal and send it to the wireless relay link.

[0052] The wireless relay terminal equipment refers to wireless communication equipment deployed on the shore and connected to the wireless relay link. For example, when performing an emergency rescue mission in sea area A, the wireless relay terminal equipment is a 5.8GHz directional antenna and radio frequency unit installed on the top of a base station tower on the coast of city B, with an antenna gain of 24dBi. The link adaptation module refers to a hardware unit deployed on the shore, connecting the wireless relay terminal equipment to the shore public network and performing protocol conversion. For example, when performing an emergency rescue mission in sea area A, the link adaptation module is an embedded protocol converter that, upon detecting that the wireless relay link uses a proprietary frame format, converts it to an Internet Protocol (IP) message format compatible with the shore public network.

[0053] In this context, "wireless signal" refers to a communication signal propagated through electromagnetic waves in space. For example, during an emergency rescue mission in sea area A, the wireless signal is a 5.8GHz radio wave, transmitted from the mother ship and propagating 20km through space to reach the shore-based wireless relay terminal equipment. "Electrical signal" refers to a voltage or current signal transmitted through wires. For example, during an emergency rescue mission in sea area A, the wireless relay terminal equipment converts the received 5.8GHz radio frequency signal into a 1V peak-to-peak baseband electrical signal, which is then transmitted to the link adapter module via a coaxial cable.

[0054] Specifically, the wireless relay terminal device is connected to the wireless relay link for communication. After receiving the wireless signal from the wireless relay link, the wireless relay terminal device converts the wireless signal into an electrical signal and outputs the converted electrical signal to the link adapter module. After receiving the electrical signal from the link adapter module, the wireless relay terminal device converts the electrical signal into a wireless signal and sends the converted wireless signal to the wireless relay link.

[0055] The link adaptation module is connected to both the wireless relay terminal device and the public network on the shore. The link adaptation module is used to detect the communication protocol type of the wireless relay link. Based on the communication protocol type, it converts the electrical signal output by the wireless relay terminal device into an electrical signal with a protocol format that matches the public network on the shore before outputting it to the public network on the shore. It also converts the electrical signal from the public network on the shore into an electrical signal with a protocol format that matches the wireless relay terminal device before outputting it to the wireless relay terminal device.

[0056] The communication protocol type refers to the set of communication rules adopted by the wireless relay link, including data encapsulation format, modulation method, and error correction coding. For example, when performing an emergency rescue mission in sea area A, the link adaptation module detects that the wireless relay link uses a time-division multiple access protocol, with a frame structure of 10ms per frame containing 8 time slots. The protocol format refers to the data organization structure and encoding method specified by the communication protocol. For example, when performing an emergency rescue mission in sea area A, the protocol format of the public network on the shore is Transmission Control Protocol (TCP) or Internet Protocol (IP) stack, which includes three layers of encapsulation: Ethernet frame structure, IP header, and TCP header.

[0057] Specifically, the link adaptation module is connected to both the wireless relay terminal device and the public network on the shore. The link adaptation module detects the communication protocol type of the wireless relay link and converts the electrical signal output by the wireless relay terminal device into an electrical signal with a protocol format that matches the public network on the shore according to the detected communication protocol type. Then, the converted electrical signal is output to the public network on the shore. The link adaptation module converts the electrical signal from the public network on the shore into an electrical signal with a protocol format that matches the wireless relay terminal device and then outputs the converted electrical signal to the wireless relay terminal device.

[0058] In the above-mentioned optional methods, the wireless relay terminal equipment is further used to realize the bidirectional conversion between wireless signals and electrical signals, and the link adaptation module is used to detect the communication protocol type of the wireless relay link, complete the protocol format conversion between the wireless relay link and the shore public network, expand the interconnection capability of heterogeneous networks, and improve the protocol compatibility and data transmission smoothness of the ship-shore communication link.

[0059] In one alternative embodiment, the shore-based wireless relay access unit 11 also includes a protective device; The protective device covers the outside of the wireless relay terminal equipment and link adapter module, and is used to isolate the wireless relay terminal equipment and link adapter module from external environmental corrosion.

[0060] The protective device refers to the protective structure that covers the outside of the shore-based wireless relay access unit 11 and is used to isolate it from the erosion of harsh environments. For example, when carrying out emergency rescue missions in sea area A, the protective device is an IP67-rated cast aluminum sealed enclosure with a built-in desiccant module, which can withstand salt spray corrosion and typhoons of level 12.

[0061] Specifically, the protective device covers the outside of the wireless relay terminal equipment and the link adapter module. The protective device adopts a sealed shell structure to completely enclose the wireless relay terminal equipment and the link adapter module inside, forming a sealed space between the sealed shell and the wireless relay terminal equipment and the link adapter module. The protective device prevents salt spray, humid air, temperature fluctuations, ultraviolet radiation and physical impacts from the external environment from entering the sealed space and contacting the wireless relay terminal equipment and the link adapter module.

[0062] In the above-mentioned optional methods, the wireless relay terminal equipment and link adapter module are further protected by a protective device to isolate them from the corrosion of coastal environmental factors such as salt spray, humidity and temperature fluctuations, thereby extending the service life of the shore-end equipment under harsh working conditions and ensuring the long-term stable operation of the ship-shore wireless relay backbone link.

[0063] In one alternative embodiment, the mothership communication hub unit 12 includes a wireless relay connection and distribution module, a data processing and forwarding module, and an unmanned aerial vehicle (UAV) control module.

[0064] The wireless relay connection and distribution module is connected to the wireless relay link for communication. The wireless relay connection and distribution module is used to establish a data connection with the wireless relay terminal device through the wireless relay link. The wireless relay connection and distribution module is also connected to the wired fiber optic link for establishing a data connection with the UAV communication carrier unit 13 through the wired fiber optic link.

[0065] Among them, the wireless relay connection and distribution module refers to the functional unit deployed in the mother ship communication hub unit 12, which is responsible for the data connection and distribution between the wireless relay link and the wired fiber optic link; for example, when performing emergency rescue missions in sea area A, the wireless relay connection and distribution module is a switching matrix with 4 wireless interfaces and 8 fiber optic interfaces, which distributes the shore downlink data to the fiber optic link of the designated UAV.

[0066] Among them, data connection refers to the logical communication channel established between two communication nodes; for example, when carrying out emergency rescue missions in sea area A, a data connection is established between the wireless relay connection and distribution module and the wireless relay terminal equipment, the connection status is established, and the transmission rate is 80Mbps.

[0067] Specifically, the wireless relay connection and distribution module is communicatively connected to the wireless relay link. The wireless relay connection and distribution module sends a connection establishment request to the wireless relay terminal device via the wireless relay link. After receiving a connection establishment confirmation from the wireless relay terminal device, it establishes a data connection with the wireless relay terminal device. After the data connection is established, the wireless relay connection and distribution module receives the first data sent by the wireless relay terminal device via the wireless relay link and transmits the first data to the data processing and forwarding module via the internal bus. The wireless relay connection and distribution module is also connected to a wired fiber optic link. The wireless relay connection and distribution module sends a connection establishment request to the UAV communication carrier unit 13 via the wired fiber optic link. After receiving a connection establishment confirmation from the UAV communication carrier unit 13, it establishes a data connection with the UAV communication carrier unit 13. After the data connection is established, the wireless relay connection and distribution module receives the second data sent by the UAV communication carrier unit 13 via the wired fiber optic link and transmits the second data to the data processing and forwarding module via the internal bus.

[0068] The data processing and forwarding module is connected to the wireless relay connection and distribution module and the UAV control module, respectively. The data processing and forwarding module is used to receive the first data obtained by the wireless relay connection and distribution module from the wireless relay link and forward the first data to the UAV control module. The data processing and forwarding module is also used to receive the second data obtained by the UAV control module from the wired fiber optic link and forward the second data to the wireless relay connection and distribution module.

[0069] The data processing and forwarding module refers to the functional unit deployed in the mother ship communication hub unit 12, which is responsible for data parsing, routing, forwarding, and caching. For example, when performing emergency rescue missions in sea area A, the data processing and forwarding module is an embedded processor system that receives video stream data from the UAV from the fiber optic interface, parses the Internet Protocol packets, and forwards them to the wireless relay interface. The cache capacity is 64GB.

[0070] The first data refers to data received from the wireless relay link and needing to be forwarded to the UAV control module. For example, when performing an emergency rescue mission in sea area A, the first data is the control command issued by the shore command center to "adjust the UAV's flight altitude to 200m," with a data packet size of 64 bytes. The second data refers to data received from the wired fiber optic link and needing to be forwarded to the wireless relay link. For example, when performing an emergency rescue mission in sea area A, the second data is the 4K high-definition video data transmitted back by the UAV, with a data packet size of 1500 bytes and a bitrate of 8Mbps.

[0071] Specifically, the data processing and forwarding module is connected to the wireless relay connection and distribution module and the UAV control module, respectively. The data processing and forwarding module receives first data obtained by the wireless relay connection and distribution module from the wireless relay link, parses the header information of the first data to identify the data type and target address, converts the protocol format of the first data into a protocol format compatible with the UAV control module according to the data type and target address, and then forwards the converted first data to the UAV control module. The data processing and forwarding module receives second data obtained by the UAV control module from the wired fiber optic link, parses the header information of the second data to identify the data type and target address, converts the protocol format of the second data into a protocol format compatible with the wireless relay link according to the data type and target address, and then forwards the converted second data to the wireless relay connection and distribution module.

[0072] The UAV control module is connected to a wired fiber optic link. The UAV control module is used to generate UAV control commands and send the UAV control commands to the UAV communication carrier unit 13 via the wired fiber optic link. The UAV control module is also used to receive data signals uploaded by the UAV communication carrier unit 13 via the wired fiber optic link and transmit the data signals as a second data to the data processing and forwarding module.

[0073] The UAV control module refers to the control unit deployed in the mother ship communication hub unit 12, which is responsible for generating UAV control commands and receiving UAV status data. For example, when performing emergency rescue missions in sea area A, the UAV control module is an industrial-grade flight control computer that sends flight path planning commands to the UAV through a wired fiber optic link and receives the UAV's latitude, longitude, altitude, and battery data in real time.

[0074] Specifically, the UAV control module is connected to a wired fiber optic link. The UAV control module generates UAV control commands based on preset flight path parameters, or based on flight control commands received from the shore command center via a wireless relay link. The UAV control commands include target position coordinates, flight altitude, flight speed, and hovering time parameters. After encoding and verifying the UAV control commands, the UAV control module sends them to the UAV communication carrier unit 13 via the wired fiber optic link. The UAV control module also receives data signals uploaded by the UAV communication carrier unit 13 via the wired fiber optic link. The data signals include terminal data obtained by the UAV communication carrier unit 13 from the AAU communication coverage unit 14 and status monitoring data of the UAV communication carrier unit 13. The UAV control module decodes and verifies the received data signals as second data and transmits the second data to the data processing and forwarding module via the internal bus.

[0075] In the above-mentioned optional methods, a data connection between the wireless relay link and the wired fiber optic link is further established through the wireless relay connection and distribution module. The data processing and forwarding module enables bidirectional data forwarding between the two types of links. The UAV control module generates control commands and receives data signals, thereby optimizing the data scheduling efficiency of the mother ship communication hub and the collaborative response speed of the UAV.

[0076] In an alternative embodiment, the mothership communication hub unit 12 also includes a power supply and protection module.

[0077] The power supply and protection module is electrically connected to the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module, respectively. The power supply and protection module is used to provide power to the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module. The power supply and protection module is also enclosed on the outside of the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module to isolate them from the external environment.

[0078] The power supply and protection module refers to the integrated unit deployed in the mother ship's communication hub unit 12, which is responsible for providing power to each unit and isolating it from environmental corrosion. For example, when performing emergency rescue missions in sea area A, the power supply and protection module is a marine 220V to 48V DC power supply, equipped with surge protectors and an IP65 waterproof enclosure, providing stable power to the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module.

[0079] Specifically, the power supply and protection module is electrically connected to the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module, respectively. The power supply and protection module draws AC power from the mother ship's power supply system, converts the AC power to DC power, and performs voltage regulation and filtering. The regulated and filtered DC power is then delivered to the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module, respectively. The power supply and protection module adopts a sealed shell structure to cover the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module. A sealed space is formed between the sealed shell and the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module. The sealed shell prevents salt spray, humid air, temperature fluctuations, vibration shocks, and electromagnetic interference from the external environment from entering the sealed space and contacting the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module.

[0080] In the above-mentioned optional methods, power is further supplied to the wireless relay connection and distribution module, data processing and forwarding module and UAV control module through the power supply and protection module, and the module is covered to isolate environmental erosion, thus ensuring the continuous power supply capability and equipment operation reliability of the mother ship communication hub under complex working conditions at sea.

[0081] In one alternative embodiment, the UAV communication carrier unit 13 includes the UAV body, fiber optic deployment and retraction mechanism, mounting interface module, and status monitoring module.

[0082] The drone body and the drone control module are connected via a wired fiber optic link. The drone body is used to receive drone control commands sent by the drone control module and fly to the target area according to the drone control commands.

[0083] The drone body refers to the main structure of a multi-rotor or fixed-wing drone that serves as a flight platform. For example, when performing emergency rescue missions in sea area A, the drone body is a six-rotor industrial drone with a wheelbase of 1.5m, a maximum takeoff weight of 25kg, and a wind resistance level of 7.

[0084] Specifically, the UAV body and the UAV control module are connected via a wired fiber optic link. The UAV body receives UAV control commands sent by the UAV control module through the wired fiber optic link, and parses the target position coordinates, flight altitude, flight speed, and hovering time parameters contained in the UAV control commands. The UAV body plans a flight path based on the parsed target position coordinates, flight altitude, and flight speed, and flies along the planned flight path after taking off from the mother ship. During the flight, it adjusts its own flight attitude and power output in real time to make the flight trajectory of the UAV body close to the planned flight path, until the UAV body flies to the target position coordinates and reaches the target flight altitude. The UAV body adjusts its own flight attitude and power output according to the hovering time parameters in the airspace above the target area, and maintains a position lock state until the hovering time reaches the duration set by the hovering time parameters.

[0085] The fiber optic take-up and release mechanism is installed on the UAV body. The mechanism includes a fiber optic spool, a take-up and release motor, a guide device, and a tension control module. The fiber optic spool is used to wind the fiber corresponding to the wired fiber optic link. The take-up and release motor is connected to the fiber optic spool and is used to drive the fiber optic spool to rotate to release or retrieve the fiber. The guide device is located between the fiber optic spool and the outside of the UAV body and is used to guide the direction of fiber optic take-up and release. The tension control module is electrically connected to the take-up and release motor and is used to detect the tension value of the fiber and control the rotation speed of the take-up and release motor according to the tension value, so that the fiber optic cable maintains the connection between the fiber optic cable and the UAV control module during the flight of the UAV body.

[0086] Among them, the fiber optic deployment and retrieval mechanism refers to a mechanical device installed on the UAV body for automatically releasing and retrieving optical fibers; for example, when performing emergency rescue missions in sea area A, the fiber optic deployment and retrieval mechanism is integrated into the UAV landing gear position, with a fiber optic spool diameter of 30cm, which can store 6km of special optical fibers.

[0087] The fiber optic spool refers to the cylindrical winding device used to wind and store optical fibers in the fiber optic take-up and release mechanism. For example, when performing emergency rescue missions in Sea Area A, the fiber optic spool has a diameter of 25cm and a width of 15cm, and can wind up to 5000m of special optical fiber. The take-up and release motor refers to the power device that drives the rotation of the fiber optic spool in the fiber optic take-up and release mechanism. For example, when performing emergency rescue missions in Sea Area A, the take-up and release motor is a brushless DC motor with a rated power of 100W and a speed range of 0 to 500 revolutions per minute, with the speed adjusted by a tension control module. The guiding device refers to the pulley mechanism in the fiber optic take-up and release mechanism that guides the direction of fiber optic take-up and release. For example, when performing emergency rescue missions in Sea Area A, the guiding device consists of three ceramic pulleys: the first pulley guides the fiber out of the spool, the second pulley changes direction by 90 degrees, and the third pulley guides the fiber to the outside of the UAV, ensuring smooth release of the fiber without sharp bends. The tension control module refers to the control unit in the fiber optic take-up and release mechanism that detects the fiber tension and adjusts the rotation speed of the take-up and release motor. For example, when performing an emergency rescue mission in sea area A, the tension control module detects the real-time tension value of the fiber through strain gauge sensors. When the tension value exceeds 5N, it automatically reduces the rotation speed of the take-up and release motor and releases more fiber. When the tension value is below 2N, it increases the rotation speed to recover the excess fiber.

[0088] The deployment / retrieval direction refers to the direction of movement when the optical fiber is released or retrieved. For example, when performing an emergency rescue mission in sea area A, the deployment / retrieval direction when the UAV takes off is to release the optical fiber from the mother ship to the UAV, and the deployment / retrieval direction when the UAV returns is to retrieve the optical fiber from the UAV to the mother ship. The tension value refers to the tensile force that the optical fiber withstands during deployment / retrieval. For example, when performing an emergency rescue mission in sea area A, the tension control module detects a real-time tension value of 3.5N for the optical fiber, which is within the preset safety threshold range of 2N to 5N.

[0089] During the process of the UAV taking off from the mother ship and flying to the target area, the tension control module monitors the tension value of the optical fiber in real time during the release process. When the detected tension value is greater than the preset upper limit of tension, the tension control module controls the receiver to increase the release rate and drives the optical fiber reel to accelerate the release of the optical fiber. When the detected tension value is less than the preset lower limit of tension, the tension control module controls the receiver to decrease the release rate and drives the optical fiber reel to decelerate the release of the optical fiber. The guiding device guides the optical fiber from the optical fiber reel and extends it along a preset direction to the outside of the UAV body, so that the optical fiber moves smoothly without tangling or bending during the release process. The optical fiber always maintains the connection state between the UAV control module and the UAV body during the flight of the UAV body.

[0090] During the process of the UAV returning from the target area to the mother ship, the tension control module monitors the tension value of the optical fiber in real time during the retrieval process. When the detected tension value is greater than the preset upper limit of tension, the tension control module controls the receiver to increase the retrieval rate and drives the optical fiber reel to accelerate the retrieval of the optical fiber. When the detected tension value is less than the preset lower limit of tension, the tension control module controls the receiver to decrease the retrieval rate and drives the optical fiber reel to decelerate the retrieval of the optical fiber. The guiding device guides the optical fiber from the outside of the UAV body to the optical fiber reel in a preset direction, so that the optical fiber is smoothly wound around the optical fiber reel during the retrieval process without tangling or bending.

[0091] The mounting interface module is fixed to the UAV body and is used to connect to the AAU communication coverage unit 14.

[0092] The mounting interface module refers to a standardized quick-release interface fixed to the UAV body for connecting the AAU communication coverage unit 14. For example, when performing emergency rescue missions in Sea Area A, the mounting interface module is a quick-release bayonet that meets military standards, with both mechanical locking and 12-core electrical connection functions, and can bear an 8kg load.

[0093] Specifically, the mounting interface module is fixed to the UAV body. The mounting interface module adopts a standardized quick-release interface structure, which includes a mechanical locking mechanism and electrical contact points. The AAU communication coverage unit 14 is inserted into the mounting interface module in a preset direction. The mechanical locking mechanism automatically locks after the AAU communication coverage unit 14 is inserted into place, fixing the AAU communication coverage unit 14 to the mounting interface module. The electrical contact points make contact with the corresponding electrical contacts of the AAU communication coverage unit 14 at the same time as the mechanical locking mechanism locks, so that an electrical connection is established between the mounting interface module and the AAU communication coverage unit 14. Through the electrical connection, the power of the UAV body is transmitted to the AAU communication coverage unit 14, and the data signals received by the AAU communication coverage unit 14 are transmitted from the AAU communication coverage unit 14 to the UAV body.

[0094] The status monitoring module is installed on the UAV body and connected to a wired fiber optic link. The status monitoring module is used to collect flight status data of the UAV body and connection status data of the fiber optic link, and send the flight status data and connection status data to the UAV control module through the wired fiber optic link.

[0095] The status monitoring module refers to a sensor integration unit installed on the UAV body to collect flight status and fiber optic connection status. For example, when performing emergency rescue missions in sea area A, the status monitoring module includes a GPS or BeiDou dual-mode positioning sensor, a three-axis accelerometer, and a fiber optic connection status sensor, which sends 20 sets of status data to the mother ship every second.

[0096] Flight status data refers to a set of information reflecting parameters such as the UAV's flight attitude, position, speed, and battery level. For example, when performing an emergency rescue mission in sea area A, the flight status data includes the UAV's current position at A°B′C″N, D°E′F″E, flight altitude of 285m, remaining battery power of 68%, and flight speed of 5m / s. Connection status data refers to a set of information reflecting the physical connection quality of the fiber optic link. For example, when performing an emergency rescue mission in sea area A, the connection status data includes the fiber optic connection signal power of -15dBm, fiber tension of 3.2N, and fiber release length of 2500m.

[0097] Specifically, the status monitoring module is installed on the UAV itself and connected to a wired fiber optic link. The status monitoring module collects the current position coordinates of the UAV through a positioning sensor, the flight attitude, flight speed, and acceleration of the UAV through an attitude sensor, and the remaining battery power of the UAV through a battery sensor. The collected current position coordinates, flight attitude, flight speed, acceleration, and remaining battery power are used as flight status data. The status monitoring module also collects the real-time tension value, release length, and signal power of the optical fiber through a status sensor connected to the fiber optic cable. The collected real-time tension value, release length, and signal power are used as connection status data. The status monitoring module packages the flight status data and connection status data into a data frame and sends the packaged data frame to the UAV control module through the wired fiber optic link.

[0098] In the above-mentioned optional methods, the optical fiber is further wound around the optical fiber spool of the optical fiber take-up and release mechanism, the take-up and release motor drives the spool to rotate to release or retrieve the optical fiber, the guide device guides the take-up and release direction, and the tension control module detects the optical fiber tension and adjusts the speed of the take-up and release motor, so that the optical fiber maintains a stable connection with the mother ship during the flight of the UAV, avoiding the risk of link interruption or optical fiber damage.

[0099] In one alternative embodiment, the AAU communication coverage unit 14 includes an AAU communication module and a signal transceiver antenna.

[0100] The AAU communication module is connected to the mounting interface module. The AAU communication module is used to dynamically adjust the transmission power according to the coverage of the target area after the UAV flies to the target area and transmit communication signals.

[0101] The AAU communication module refers to the core communication module within the active antenna unit, responsible for signal modulation / demodulation, power amplification, and multi-user access. For example, during emergency rescue operations in Sea Area A, the AAU communication module is a baseband processing unit supporting both 700MHz and 2.6GHz dual-band frequencies, with a maximum transmit power of 20W, capable of simultaneously connecting 64 user terminals. The signal transceiver antenna refers to the radio frequency antenna device connected to the AAU communication module, used for radiating communication signals and receiving terminal signals. For example, during emergency rescue operations in Sea Area A, the signal transceiver antenna is a directional antenna with a gain of 12dBi, a beamwidth of 60 degrees horizontally and 30 degrees vertically, and its coverage direction is directed towards the accident area.

[0102] The coverage area refers to the spatial region where the temporary communication network can provide effective signal service. For example, when performing an emergency rescue mission in sea area A, if the AAU communication module's transmission power is set to 15W, the coverage area is a circular sea area with a radius of 3km centered on the drone's hovering point, covering an area of ​​approximately 28 square kilometers. The transmission power refers to the radio frequency signal power output by the AAU communication module to the signal transceiver antenna. For example, when performing an emergency rescue mission in sea area A, the AAU communication module dynamically adjusts its transmission power to 15W based on the size of the target area, achieving a coverage radius of 3km.

[0103] Specifically, the AAU communication module is connected to the mounting interface module. After the UAV flies to the target area, the AAU communication module determines the transmission power value according to the coverage of the target area, adjusts the transmission power of the AAU communication module to the transmission power value, and generates a communication signal after adjusting the transmission power. The communication signal is then radiated to the target area through the signal transceiver antenna.

[0104] The signal transceiver antenna is connected to the AAU communication module. The signal transceiver antenna is used to radiate communication signals to the target area, build a temporary communication network covering the target area, and receive data signals from terminal devices in the target area through the temporary communication network, and transmit the data signals to the AAU communication module.

[0105] Specifically, the signal transceiver antenna is connected to the AAU communication module. The signal transceiver antenna receives communication signals from the AAU communication module and radiates the communication signals to the target area to build a temporary communication network covering the target area. The signal transceiver antenna receives data signals sent by terminal devices in the target area through the temporary communication network and transmits the received data signals to the AAU communication module.

[0106] The AAU communication module is also used to transmit data signals to the UAV body via the mounted interface module.

[0107] Specifically, after receiving data signals from the signal transceiver antenna, the AAU communication module transmits the data signals to the UAV body through the electrical connection contact of the mounting interface module. The electrical connection contact of the mounting interface module forms an electrical signal transmission channel between the AAU communication module and the UAV body.

[0108] In the above-mentioned optional methods, the AAU communication module can be used to dynamically adjust the transmission power and transmit communication signals after the UAV arrives at the target area. The signal is radiated to the target area by the signal transceiver antenna to build a temporary communication network, and the data signals of the terminal equipment are received and transmitted back to the AAU communication module, which expands the coverage of maritime emergency communication and the flexibility of network construction.

[0109] In an alternative embodiment, the AAU communication coverage unit 14 also includes a power module and a protective housing.

[0110] The power module is electrically connected to the AAU communication module and the signal transceiver antenna, respectively, and is used to provide power to the AAU communication module and the signal transceiver antenna.

[0111] Specifically, the power module is electrically connected to both the AAU communication module and the signal transceiver antenna. The power module receives input power from the UAV's power system, performs voltage conversion to generate a first operating voltage required by the AAU communication module and a second operating voltage required by the signal transceiver antenna. The power module transmits the first operating voltage to the AAU communication module and the second operating voltage to the signal transceiver antenna via electrical connections. The first operating voltage ranges from 24V to 48V, and the second operating voltage ranges from 3.3V to 12V, but these can be adjusted according to actual conditions without limitation.

[0112] The protective housing covers the AAU communication module, signal transceiver antenna, and power module, and is used to isolate the AAU communication module, signal transceiver antenna, and power module from external environmental corrosion.

[0113] Specifically, the protective shell covers the AAU communication module, signal transceiver antenna, and power module. The protective shell is a sealed shell structure made of lightweight, high-strength composite material. The sealed shell structure includes a shell wall and a sealing cover. The shell wall and the sealing cover are connected in an airtight manner through a sealing ring. The sealed shell structure completely encloses the AAU communication module, signal transceiver antenna, and power module, forming a sealed space between the sealed shell structure and the AAU communication module, signal transceiver antenna, and power module. The protective shell prevents salt spray, humid air, ultraviolet radiation, temperature fluctuations, and physical impacts from the external environment from entering the sealed space through the physical barrier of the shell wall. The sealing ring prevents moisture and salt spray from the external environment from seeping into the sealed space through the gaps between the shell wall and the sealing cover, thus keeping the AAU communication module, signal transceiver antenna, and power module isolated from the external environment.

[0114] In the above-mentioned optional methods, the AAU communication module and signal transceiver antenna are further powered by a power module, and a protective shell is used to cover the outside of the above components to isolate them from environmental corrosion, thus ensuring the energy supply independence and high-altitude operating environment adaptability of the AAU communication coverage unit when it is mounted on a UAV.

[0115] In one alternative approach, the UAV body is used to receive data signals from the AAU communication module via an attached interface module and transmit the data signals to the status monitoring module.

[0116] The status monitoring module is used to send data signals to the UAV control module via a wired fiber optic link.

[0117] The UAV control module is used to transmit data signals as a second data to the data processing and forwarding module.

[0118] The data processing and forwarding module is used to forward the second data to the wireless relay connection and distribution module.

[0119] The wireless relay connection and distribution module is used to send the second data to the wireless relay terminal device through the wireless relay link.

[0120] Specifically, the UAV receives data signals from the AAU communication module through the electrical connection contacts of the mounted interface module and transmits the data signals to the status monitoring module. The status monitoring module packages the received data signals with the flight status data and connection status data collected by the status monitoring module to generate a composite data frame containing data signals, flight status data, and connection status data. The composite data frame is then sent to the UAV control module via a wired fiber optic link. The UAV control module receives the composite data frame from the wired fiber optic link, parses the data signals from the composite data frame, uses the parsed data signals as the second data, and transmits the second data to the data processing and forwarding module via the internal bus. The data processing and forwarding module receives the second data, performs protocol conversion on the second data, and forwards the converted second data to the wireless relay connection and distribution module via the internal bus. The wireless relay connection and distribution module receives the second data, encapsulates the second data into a data frame conforming to the wireless relay link transmission format, and sends the encapsulated data frame to the wireless relay terminal device via the wireless relay link.

[0121] In the above-mentioned optional methods, the UAV body further receives data signals from the AAU communication module and transmits them to the status monitoring module. The status monitoring module sends the data signals to the UAV control module. The UAV control module transmits the data signals as the second data to the data processing and forwarding module. The data processing and forwarding module forwards the second data to the wireless relay connection and distribution module. The wireless relay connection and distribution module sends the second data to the wireless relay terminal device through the wireless relay link, thus constructing an end-to-end data transmission channel from the target area terminal device to the shore public network, realizing multi-node collaborative data backhaul and network interconnection.

[0122] In another embodiment of the shipborne communication system of this embodiment, such as Figure 2 As shown, the shipborne communication system consists of four levels: a shore-based wireless relay access unit 11, a mother ship communication hub unit 12, an unmanned aerial vehicle (UAV) communication carrier unit 13, and an AAU communication coverage unit 14. The shore-based wireless relay access unit 11 is deployed on the shore and establishes a communication connection with the shore-based public network. The mother ship communication hub unit 12 is deployed on the mother ship and establishes a wireless relay link with the shore-based wireless relay access unit 11. The UAV communication carrier unit 13 is mounted on the mother ship and is connected to the mother ship communication hub unit 12 via a wired fiber optic link. The AAU communication coverage unit 14 is mounted on the UAV communication carrier unit 13.

[0123] like Figure 3As shown, the shore-side wireless relay access unit 11 internally includes a wireless relay terminal device, a link adapter module, and a protection device. The wireless relay terminal device is communicatively connected to the wireless relay link, responsible for converting wireless signals from the wireless relay link into electrical signals and outputting them to the link adapter module. Simultaneously, it converts electrical signals from the link adapter module into wireless signals and transmits them to the wireless relay link. The link adapter module is communicatively connected to both the wireless relay terminal device and the shore-side public network. It is responsible for detecting the communication protocol type of the wireless relay link, converting the electrical signals output by the wireless relay terminal device into electrical signals with a protocol format matching the shore-side public network based on the detected communication protocol type, and outputting them to the shore-side public network. It also converts electrical signals from the shore-side public network into electrical signals with a protocol format matching the wireless relay terminal device and outputting them to the wireless relay terminal device. The protective device uses a sealed shell structure to completely enclose the wireless relay terminal equipment and link adapter module inside, forming a sealed space between the sealed shell and the wireless relay terminal equipment and link adapter module, preventing salt spray, humid air, temperature fluctuations, ultraviolet radiation, and physical impacts from the external environment from entering the sealed space and contacting the wireless relay terminal equipment and link adapter module.

[0124] The mothership communication hub unit 12 internally includes a wireless relay connection and distribution module, a data processing and forwarding module, an UAV control module, and a power supply and protection module. The wireless relay connection and distribution module communicates with a wireless relay link, establishing a data connection with the wireless relay terminal equipment via the wireless relay link; it also connects to a wired fiber optic link, establishing a data connection with the UAV communication carrier unit 13 via the wired fiber optic link. The data processing and forwarding module is connected to both the wireless relay connection and distribution module and the UAV control module, responsible for receiving the first data obtained by the wireless relay connection and distribution module from the wireless relay link and forwarding it to the UAV control module, and simultaneously receiving the second data obtained by the UAV control module from the wired fiber optic link and forwarding it to the wireless relay connection and distribution module. The UAV control module is connected to a wired fiber optic link. Based on preset flight path parameters or flight control commands received from the shore command center via a wireless relay link, it generates UAV control commands and transmits these commands to the UAV communication carrier unit 13 via the wired fiber optic link. It also receives data signals uploaded by the UAV communication carrier unit 13 via the same link and transmits these data signals as a second data transmission to the data processing and forwarding module. The power supply and protection module is electrically connected to the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module, respectively. It draws AC power from the mothership's power supply system, converts the AC power to DC power, and performs voltage regulation and filtering. The regulated and filtered DC power is then transmitted to the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module. The power supply and protection module is enclosed in a sealed shell structure, preventing salt spray, humid air, temperature fluctuations, vibration, shock, and electromagnetic interference from the external environment from entering the sealed space and contacting these modules.

[0125] The UAV communication carrier unit 13 internally includes the UAV body, fiber optic deployment and take-off mechanism, mounting interface module, and status monitoring module. The UAV body is connected to the UAV control module via a wired fiber optic link. It receives UAV control commands from the UAV control module, parses the target position coordinates, flight altitude, flight speed, and hovering time parameters contained in the control commands, plans a flight path based on the parsed target position coordinates, flight altitude, and flight speed, and flies along the planned flight path after takeoff from the mother ship. During flight, it adjusts its flight attitude and power output in real time until it reaches the target position coordinates and flight altitude. In the airspace above the target area, it adjusts its flight attitude and power output according to the hovering time parameters, maintaining a position lock until the hovering time reaches the set duration. The fiber optic deployment and take-off mechanism is installed on the UAV body and includes a fiber optic reel, a receiver / disembarkator, a guide device, and a tension control module. The fiber optic reel is wound with the fiber corresponding to the wired fiber optic link. The receiver / disembarkator is drive-connected to the fiber optic reel. The guide device is located between the fiber optic reel and the outside of the UAV body. The tension control module is electrically connected to the receiver / disembarkator. During the UAV's takeoff from the mothership and flight to the target area, the tension control module monitors the fiber tension in real time during release. When the detected tension exceeds a preset upper limit, the receiver / discharger is controlled to increase the release rate; when the detected tension is below a preset lower limit, the receiver / discharger is controlled to decrease the release rate. A guiding device guides the fiber from the fiber optic reel and extends it along a preset direction to the outside of the UAV, ensuring smooth movement without tangling or bending during release. The fiber maintains a connection with the UAV control module throughout the UAV's flight. During the UAV's return from the target area to the mothership, the tension control module monitors the fiber tension in real time during retrieval. When the detected tension exceeds a preset upper limit, the receiver / discharger is controlled to increase the retrieval rate; when the detected tension is below a preset lower limit, the receiver / discharger is controlled to decrease the retrieval rate. The guiding device guides the fiber from the outside of the UAV back to the fiber optic reel along a preset direction, ensuring smooth winding around the reel without tangling or bending during retrieval. The mounting interface module is fixed to the UAV body and adopts a standardized quick-release interface structure, including a mechanical locking mechanism and electrical connection contacts. The AAU communication coverage unit 14 is inserted into the mounting interface module in a preset direction. The mechanical locking mechanism automatically locks after the AAU communication coverage unit 14 is inserted into place, fixing the AAU communication coverage unit 14 to the mounting interface module. The electrical connection contacts make contact with the corresponding electrical contacts of the AAU communication coverage unit 14 at the same time as the mechanical locking mechanism locks, so that an electrical connection is established between the mounting interface module and the AAU communication coverage unit 14. Through the electrical connection, the power of the UAV body is transmitted to the AAU communication coverage unit 14, and the data signals received by the AAU communication coverage unit 14 are transmitted from the AAU communication coverage unit 14 to the UAV body.The status monitoring module is installed on the UAV itself and connected to a wired fiber optic link. It collects the current position coordinates of the UAV through a positioning sensor, the flight attitude, flight speed, and acceleration through an attitude sensor, and the remaining battery power through a battery sensor. The collected current position coordinates, flight attitude, flight speed, acceleration, and remaining battery power are used as flight status data. The status monitoring module also collects the real-time tension value, release length, and signal power of the fiber optic cable through a status sensor. The collected real-time tension value, release length, and signal power are used as connection status data. The status monitoring module packages the flight status data and connection status data into a data frame and sends the packaged data frame to the UAV control module through the wired fiber optic link.

[0126] The AAU communication coverage unit 14 internally includes an AAU communication module, a signal transceiver antenna, a power module, and a protective shell. The AAU communication module connects to the mounting interface module. After the UAV flies to the target area, it determines the transmission power value based on the coverage range of the target area, adjusts the transmission power of the AAU communication module to the specified value, generates a communication signal, and radiates the communication signal to the target area through the signal transceiver antenna. The signal transceiver antenna connects to the AAU communication module, receives communication signals from the AAU communication module, radiates the communication signals to the target area, constructing a temporary communication network covering the target area. It receives data signals sent by terminal devices within the target area through this temporary communication network and transmits the received data signals to the AAU communication module. After receiving the data signals from the signal transceiver antenna, the AAU communication module transmits the data signals to the UAV through the electrical contact points of the mounting interface module. The power module is electrically connected to the AAU communication module and the signal transceiver antenna respectively. It obtains input power from the power system of the UAV body, performs voltage conversion processing on the input power to generate the first operating voltage required by the AAU communication module and the second operating voltage required by the signal transceiver antenna. The first operating voltage is transmitted to the AAU communication module through the electrical connection line, and the second operating voltage is transmitted to the signal transceiver antenna through the electrical connection line. The protective housing covers the AAU communication module, signal transceiver antenna, and power module. It is a sealed housing structure made of lightweight, high-strength composite material. The sealed housing structure includes a housing wall and a sealing cover. The housing wall and the sealing cover are connected in an airtight manner by a sealing ring. The sealed housing structure completely encloses the AAU communication module, signal transceiver antenna, and power module, forming a sealed space between the sealed housing structure and the AAU communication module, signal transceiver antenna, and power module. The physical barrier of the housing wall prevents salt spray, humid air, ultraviolet radiation, temperature fluctuations, and physical impacts from the external environment from entering the sealed space. The sealing ring prevents moisture and salt spray from the external environment from seeping into the sealed space through the gaps between the housing wall and the sealing cover, thus keeping the AAU communication module, signal transceiver antenna, and power module isolated from the external environment.

[0127] The UAV receives data signals from the AAU communication module via the electrical contact points of the mounted interface module and transmits these signals to the status monitoring module. The status monitoring module packages the received data signals with flight and connection status data collected by itself, generating a composite data frame containing the data signals, flight status data, and connection status data. This composite data frame is then sent to the UAV control module via a wired fiber optic link. The UAV control module receives the composite data frame from the wired fiber optic link, extracts the data signals from it, uses these signals as the second data, and transmits it to the data processing and forwarding module via the internal bus. The data processing and forwarding module receives the second data, performs protocol conversion, and forwards the converted second data to the wireless relay connection and distribution module via the internal bus. The wireless relay connection and distribution module receives the second data, encapsulates it into a data frame conforming to the wireless relay link transmission format, and sends the encapsulated data frame to the wireless relay terminal device via the wireless relay link.

[0128] like Figure 4 As shown, the method corresponding to the shipborne communication system in this embodiment includes six stages: link connection, mission triggering, UAV deployment, signal coverage, data transmission, and mission termination.

[0129] In the link connection process, the mother ship is connected to the shore-based communication link. The mother ship communication hub unit 12 establishes a connection with the shore-based wireless relay access unit 11 through a wireless relay link, thus completing the construction of the ship-shore backbone communication link. At the same time, the wired optical fiber of each UAV is connected to the mother ship communication hub unit 12 to complete the construction of the core communication link.

[0130] During the mission triggering phase, after receiving the mission request for a signal coverage area, the mother ship sails towards the mission area. The UAV control module of the mother ship's communication hub unit 12 plans the number of UAVs according to the size of the area, equips the corresponding fiber optic transceivers according to the flight distance, and sends mission instructions to the selected UAVs through wired fiber optic cables.

[0131] During the drone deployment phase, the drone takes off from the mother ship according to the route planned for the target area and flies along the preset path. During the flight, the fiber optic cable release mechanism automatically releases the fiber optic cable according to the flight status, and always maintains an uninterrupted wired fiber optic connection with the mother ship. The AAU communication coverage unit 14 is remotely activated, and the parameters are viewed in the background to ensure that the link is smooth. After the drone arrives in the airspace above the target area, it adjusts its flight attitude according to the preset parameters to achieve precise hovering or cruising.

[0132] During the signal coverage phase, after arriving at the mission area, a temporary network is established. The AAU communication coverage unit 14 on the UAV is activated, and the AAU communication module begins to transmit communication signals to build a temporary communication network covering the target area. Terminal devices in the coverage area access the network, and the ship-shore data center coordinates the process. During this period, the UAV's position is adjusted according to the signal, and terminal devices in the area search for and access the temporary network.

[0133] During data transmission, after the terminals in the coverage area access the network, the voice, video, and data information generated by the terminal devices are received and processed by the AAU communication module. Then, they are transmitted at high speed to the mother ship communication hub unit 12 via a dedicated wired optical fiber between the UAV and the mother ship. The data is then transmitted back to the mother ship and then back to the shore data center for unified scheduling. The mother ship communication hub unit 12 parses and integrates the data and transmits it to the shore wireless relay access unit 11 via the ship-to-shore wireless relay link. The shore wireless relay access unit 11 then forwards it to the land public network. At the same time, control commands and service data from the land public network are transmitted to the AAU communication module via the shore wireless relay access unit 11 and the mother ship communication hub unit 12 via a dedicated wired optical fiber link. The AAU communication module then broadcasts the data to the terminal devices in the target area, completing the two-way data transmission.

[0134] During the mission completion phase, when the communication support mission is completed or the drone's battery is low or the equipment malfunctions, the mother ship's communication hub unit 12 issues a return command via wired fiber optic cable. The drone then returns to the mother ship along a preset path. The fiber optic cable retraction mechanism automatically retrieves the fiber optic cable. After the drone lands, the fiber optic cable link is safely disconnected, and the mother ship departs.

[0135] This embodiment constructs a four-layer collaborative architecture consisting of a shore-based wireless relay access unit, a mother ship communication hub unit, a UAV communication carrier unit, and an AAU communication coverage unit. It connects the shore-based public network to the mother ship via a wireless relay link and connects the mother ship to the UAV via a wired fiber optic link. During the UAV's flight, the fiber optic cable is automatically released or retrieved through a fiber optic deployment and take-up mechanism, and the tension is adjusted in real time to ensure that the UAV always maintains a wired fiber optic connection with the mother ship. This solves the problems of high bandwidth cost and high latency of satellite communication, limited coverage of shore-based wireless communication, low data transmission rate and weak anti-interference capability of traditional ship communication, long construction cycle and poor deployment flexibility of fixed base stations, and high data packet loss rate caused by electromagnetic interference in UAV wireless backhaul.

[0136] This embodiment sets up a wireless relay terminal device and a link adaptation module in the shore-based wireless relay access unit to detect the communication protocol type of the wireless relay link and complete the protocol format conversion between the wireless relay link and the shore-based public network. In the mother ship communication hub unit, a wireless relay connection and distribution module, a data processing and forwarding module, and a UAV control module are set up to achieve bidirectional data forwarding and protocol conversion between the wireless relay link and the wired fiber optic link. In the UAV communication carrier unit, the UAV body, fiber optic deployment and take-off mechanism, mounting interface module, and status monitoring module are set up to achieve stable fiber optic deployment and take-off and status monitoring during UAV flight. In the AAU communication coverage unit, a communication module, signal transceiver antenna, power module, and protective shell are set up to achieve rapid construction of a temporary communication network in the target area and high-quality reception of terminal data signals. Through a complete process of six stages—link establishment, task triggering, UAV deployment, signal coverage, data transmission, and task completion—cooperative communication between the ship-shore wireless relay backbone link and the UAV wired fiber optic link is realized, improving the rapid construction capability of the communication network in areas without public network coverage at sea, the stability of data transmission in complex marine electromagnetic environments, and the communication guarantee level for multi-scenario operations.

[0137] Figure 5 This diagram illustrates a flow chart of an embodiment of a shipborne communication method provided by the present invention, employing a shipborne communication system 10 as provided by the present invention. Figure 5 As shown, the shipborne communication method includes the following steps: S1, the shore-side wireless relay access unit 11 performs protocol adaptation and signal conversion between the wireless relay link and the shore-side public network; S2. The mother ship communication hub unit 12 transmits data to the shore wireless relay access unit 11 through a wireless relay link, and transmits data to the UAV communication carrier unit 13 through a wired fiber optic link. It also forwards the data transmitted between the wireless relay link and the wired fiber optic link. The mother ship communication hub unit 12 generates UAV control commands and sends them to the UAV communication carrier unit 13 through the wired fiber optic link. S3. The UAV communication carrier unit 13 flies to the target area according to the UAV control command, and releases or retrieves the optical fiber corresponding to the wired optical fiber link through the optical fiber take-up and release mechanism during the flight, maintaining the wired optical fiber link with the mother ship communication hub unit 12. S4, AAU communication coverage unit 14 transmits communication signals to build a temporary communication network after the UAV communication carrier unit 13 flies to the target area, and receives data signals from terminal devices in the target area through the temporary communication network; S5. The UAV communication carrier unit 13 receives data signals from the AAU communication coverage unit 14 and transmits the data signals to the mother ship communication hub unit 12 through a wired optical fiber link, so that the mother ship communication hub unit 12 transmits the data signals to the shore wireless relay access unit 11 through a wireless relay link.

[0138] It should be noted that the beneficial effects of the shipborne communication method provided in the above embodiments are the same as those of the shipborne communication system 10 described above, and will not be repeated here. Furthermore, the method and system embodiments provided in the above embodiments belong to the same concept, and their specific implementation processes are detailed in the method embodiments, and will not be repeated here.

[0139] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this invention is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-disclosed concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this invention.

[0140] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and represent a limitation on a specific order or sequence. Where appropriate, the order of use for similar objects can be interchanged so that the embodiments of this application described herein can be implemented in an order other than that shown or described.

[0141] Those skilled in the art will recognize that this invention can be implemented as a system, method, or computer program product. Therefore, this invention can be specifically implemented in the following forms: it can be entirely hardware, entirely software (including firmware, resident software, microcode, etc.), or a combination of hardware and software, generally referred to herein as a "circuit," "module," or "system." Furthermore, in some embodiments, this invention can also be implemented as a computer program product contained in one or more computer-readable media, which includes computer-readable program code.

[0142] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A shipborne communication system, characterized in that include: The shore-side wireless relay access unit is deployed on the shore and communicates with the shore-side public network. The mothership communication hub unit is deployed on the mothership and establishes a wireless relay link with the shore-based wireless relay access unit; The UAV communication carrier unit is mounted on the mother ship and is connected to the mother ship's communication hub unit via a wired fiber optic link; AAU communication coverage unit, mounted on the UAV communication carrier unit; The shore-side wireless relay access unit is used to perform protocol adaptation and signal conversion between the wireless relay link and the shore-side public network; The mothership communication hub unit is used to transmit data with the shore-based wireless relay access unit through the wireless relay link, transmit data with the UAV communication carrier unit through the wired fiber optic link, and forward the data transmitted between the wireless relay link and the wired fiber optic link. The mothership communication hub unit is also used to generate UAV control commands and send them to the UAV communication carrier unit through the wired fiber optic link. The UAV communication carrier unit is used to fly to the target area according to the UAV control command, and during the flight, it releases or retrieves the optical fiber corresponding to the wired optical fiber link through the optical fiber take-up and release mechanism to maintain the wired optical fiber link with the mother ship communication hub unit. The AAU communication coverage unit is used to transmit communication signals to build a temporary communication network after the UAV communication carrier unit flies to the target area, and to receive data signals from terminal devices in the target area through the temporary communication network. The UAV communication carrier unit is used to receive the data signal from the AAU communication coverage unit and transmit the data signal to the mother ship communication hub unit through the wired optical fiber link, so that the mother ship communication hub unit transmits the data signal to the shore wireless relay access unit through the wireless relay link.

2. The shipboard communication system of claim 1, wherein, The shore-side wireless relay access unit includes a wireless relay terminal device and a link adaptation module; The wireless relay terminal device is communicatively connected to the wireless relay link. The wireless relay terminal device is used to convert wireless signals from the wireless relay link into electrical signals and output them to the link adaptation module, and to convert electrical signals from the link adaptation module into wireless signals and send them to the wireless relay link. The link adaptation module is communicatively connected to both the wireless relay terminal device and the shore-side public network. The link adaptation module is used to detect the communication protocol type of the wireless relay link, convert the electrical signal output by the wireless relay terminal device into an electrical signal with a protocol format matching the shore-side public network according to the communication protocol type, and then output it to the shore-side public network. Conversely, it converts the electrical signal from the shore-side public network into an electrical signal with a protocol format matching the wireless relay terminal device and then outputs it to the wireless relay terminal device.

3. The shipboard communication system of claim 2, wherein, The shore-based wireless relay access unit also includes a protective device; The protective device covers the outside of the wireless relay terminal equipment and the link adapter module, and the protective device is used to isolate the external environment from the corrosion of the wireless relay terminal equipment and the link adapter module.

4. The shipboard communication system of claim 2, wherein, The mothership communication hub unit includes a wireless relay connection and distribution module, a data processing and forwarding module, and an unmanned aerial vehicle control module. The wireless relay connection and distribution module is communicatively connected to the wireless relay link, and is used to establish a data connection with the wireless relay terminal device through the wireless relay link; the wireless relay connection and distribution module is also connected to the wired optical fiber link, and is used to establish a data connection with the UAV communication carrier unit through the wired optical fiber link. The data processing and forwarding module is connected to the wireless relay connection and distribution module and the UAV control module, respectively. The data processing and forwarding module is used to receive first data obtained by the wireless relay connection and distribution module from the wireless relay link and forward the first data to the UAV control module. The data processing and forwarding module is also used to receive second data obtained by the UAV control module from the wired optical fiber link and forward the second data to the wireless relay connection and distribution module. The UAV control module is connected to the wired fiber optic link. The UAV control module is used to generate the UAV control commands and send the UAV control commands to the UAV communication carrier unit through the wired fiber optic link. The UAV control module is also used to receive the data signal uploaded by the UAV communication carrier unit through the wired fiber optic link and transmit the data signal as the second data to the data processing and forwarding module.

5. The shipboard communication system of claim 4, wherein, The mothership communication hub unit also includes a power supply and protection module; The power supply and protection module is electrically connected to the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module, respectively. The power supply and protection module is used to provide power to the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module. The power supply and protection module is also covered outside the wireless relay connection and distribution module, the data processing and forwarding module, and the UAV control module to isolate them from external environmental interference.

6. The shipboard communication system of claim 4, wherein, The UAV communication carrier unit includes the UAV body, fiber optic take-up and take-down mechanism, mounting interface module and status monitoring module; The drone body and the drone control module are connected via the wired fiber optic link. The drone body is used to receive the drone control commands sent by the drone control module and fly to the target area according to the drone control commands. The fiber optic take-up and release mechanism is installed on the UAV body. The fiber optic take-up and release mechanism includes a fiber optic spool, a take-up and release motor, a guide device, and a tension control module. The fiber optic spool is used to wind the fiber optic cable corresponding to the wired fiber optic link. The take-up and release motor is driven to rotate the fiber optic spool to release or retract the fiber optic cable. The guide device is located between the fiber optic spool and the outside of the UAV body to guide the take-up and release direction of the fiber optic cable. The tension control module is electrically connected to the take-up and release motor. The tension control module is used to detect the tension value of the fiber optic cable and control the rotation speed of the take-up and release motor according to the tension value, so that the fiber optic cable maintains a connection with the UAV control module during the flight of the UAV body. The mounting interface module is fixed to the UAV body, and the mounting interface module is used to connect to the AAU communication coverage unit; The status monitoring module is installed on the UAV body and connected to the wired fiber optic link. The status monitoring module is used to collect flight status data of the UAV body and connection status data of the fiber optic link, and send the flight status data and the connection status data to the UAV control module through the wired fiber optic link.

7. The shipboard communication system of claim 6, wherein, The AAU communication coverage unit includes an AAU communication module and a signal transceiver antenna; The AAU communication module is connected to the mounting interface module. The AAU communication module is used to dynamically adjust the transmission power according to the coverage of the target area after the UAV body flies to the target area, and transmit the communication signal. The signal transceiver antenna is connected to the AAU communication module. The signal transceiver antenna is used to radiate the communication signal to the target area, construct the temporary communication network covering the target area, and receive the data signal of the terminal device in the target area through the temporary communication network and transmit the data signal to the AAU communication module. The AAU communication module is also used to transmit the data signal to the UAV body through the mounting interface module.

8. The shipboard communication system of claim 7, wherein, The AAU communication coverage unit also includes a power module and a protective housing; The power module is electrically connected to the AAU communication module and the signal transceiver antenna respectively, and the power module is used to provide power to the AAU communication module and the signal transceiver antenna; The protective housing covers the AAU communication module, the signal transceiver antenna, and the power module, and is used to isolate the AAU communication module, the signal transceiver antenna, and the power module from external environmental corrosion.

9. The ship-borne communication system according to claim 7 or 8, characterized in that, The UAV body is used to receive the data signal from the AAU communication module through the mounting interface module, and transmit the data signal to the status monitoring module; The status monitoring module is used to transmit the data signal to the UAV control module through the wired optical fiber link; The UAV control module is used to transmit the data signal as the second data to the data processing and forwarding module; The data processing and forwarding module is used to forward the second data to the wireless relay connection and distribution module; The wireless relay connection and distribution module is used to send the second data to the wireless relay terminal device through the wireless relay link.

10. A shipborne communication method employing the shipborne communication system according to any one of claims 1 to 9, characterized by, include: The shore-side wireless relay access unit performs protocol adaptation and signal conversion between the wireless relay link and the shore-side public network; The mothership communication hub unit transmits data to the shore-based wireless relay access unit via the wireless relay link, transmits data to the UAV communication carrier unit via the wired fiber optic link, and forwards the data transmitted between the wireless relay link and the wired fiber optic link. The mothership communication hub unit generates UAV control commands and sends them to the UAV communication carrier unit via the wired fiber optic link. The UAV communication carrier unit flies to the target area according to the UAV control command, and releases or retrieves the optical fiber corresponding to the wired optical fiber link through the optical fiber take-up and release mechanism during the flight, so as to maintain the wired optical fiber link with the mother ship communication hub unit. The AAU communication coverage unit transmits communication signals to construct a temporary communication network after the UAV communication carrier unit flies to the target area, and receives data signals from terminal devices in the target area through the temporary communication network. The UAV communication carrier unit receives the data signal from the AAU communication coverage unit and transmits the data signal to the mother ship communication hub unit through the wired optical fiber link, so that the mother ship communication hub unit transmits the data signal to the shore wireless relay access unit through the wireless relay link.

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