Beidou-based maritime survival, situation generation and command and dispatch system and method

Abstract

The present invention belongs to the field of satellite navigation application technology, and discloses a Beidou-based marine survival, situation generation, and command and dispatch system and method. Aiming at the two situations of sporadic people falling into the water and large-scale people falling into the water at sea, based on the Beidou short message communication link, a special Beidou survival beacon, search and rescue position indicator and other special terminals are designed, which integrate various Beidou terminal communication and positioning information, and voice connect various existing telephone duty platforms. At the same time, it is compatible with various AIS and Beidou survival beacons available in the market, and constructs a Beidou-based marine survival, situation generation, and command and dispatch integrated system from the whole process of "survival signal sending-survival signal perception-search and rescue situation generation-auxiliary dispatch guidance". The present invention breaks through the traditional Beidou rescue network system and changes the inherent information flow mode, and can provide an efficient Beidou-based guarantee means for marine survival and search and rescue operations.

Description

Technical Field

[0001] The present invention belongs to the technical field of satellite navigation applications, and in particular relates to a Beidou-based marine survival, situation generation and command and dispatch system. Background Art

[0002] In recent years, there have been many reports of people in distress at sea. After falling into the water, the longer a person drifts at sea, the more dangerous it is. Joint search and rescue at sea usually occurs suddenly. In order to improve the efficiency of search and rescue, it is often necessary to mobilize all relevant forces to participate in the rescue operation. Since the communication, positioning equipment and usage methods of the mobilized forces temporarily participating in the formation are different, it is difficult to form a unified situation and command and dispatch link.

[0003] Through the above analysis, the problems and defects of the prior art are as follows:

[0004] 1) Inconsistent communication: Since the various parties involved in the search and rescue operation use different communication equipment and systems, this leads to poor communication, which affects the rescue effect. In an emergency, fast and accurate information transmission and communication are crucial, and the shortcomings of existing technologies in this regard will reduce the efficiency of search and rescue.

[0005] 2) Differences in positioning equipment: Different search and rescue forces use different types of positioning equipment, which leads to problems with the accuracy and consistency of positioning information. If accurate positioning information cannot be obtained, the efficiency of the search and rescue operation will be seriously affected.

[0006] 3) Difficulties in coordination and command: Since different parties use different communication and positioning equipment, coordination and command during the search and rescue process are difficult. In maritime search and rescue operations, unified command and coordination are crucial to improving rescue efficiency. The shortcomings of existing technologies in this regard will affect the search and rescue effect.

[0007] 4) Insufficient real-time situational awareness: Existing technologies make it difficult to obtain comprehensive and accurate search and rescue site information in real time, such as the sea environment and the location of the rescued persons, which will affect the deployment and implementation of rescue operations.

[0008] 5) Inflexible resource scheduling: Existing maritime search and rescue technologies cannot quickly mobilize and deploy all available resources when faced with emergencies, which reduces the efficiency of rescue operations and increases the risks to the rescued personnel.

[0009] 6) Difficulty in information sharing: Existing technologies have defects in information sharing and cannot achieve real-time sharing of key information of rescue operations by multiple parties, which will affect the efficiency and effectiveness of search and rescue.

[0010] In summary, existing maritime search and rescue technologies have problems and defects such as inconsistent communications, differences in positioning equipment, difficulties in coordination and command, insufficient real-time situational awareness, inflexible resource scheduling, and difficulties in information sharing. To solve these problems, it is necessary to develop more advanced maritime search and rescue technologies to improve rescue efficiency and success rate. Summary of the invention

[0011] In view of the problems existing in the prior art, the present invention provides a Beidou-based maritime survival, situation generation and command and dispatch system, which deeply integrates Beidou short message services into the current multi-mode network system for distress and lifesaving, and improves the closed loop of information flow as the entry point. According to the principle of "open compatibility, rapid networking, cross-domain interconnection, and flexible expansion", the present invention carries out the optimization design of the Beidou-3 rescue information system, constructs a rescue information software and hardware processing platform of "Beidou network system" + "various duty telephone networks", and forms an emergency response and disposal mode in which Beidou short message information is seamlessly connected to the telephone duty platform system. The innovation is mainly carried out at two levels: system function realization and system application mode.

[0012] The present invention is implemented as follows: a Beidou-based marine survival, situation generation and command and dispatch system, the Beidou-based marine survival, situation generation and command and dispatch system comprising:

[0013] The information service layer is equipped with Beidou situation dispatch and telephone voice service subsystems, including base-level service terminals and group-level service terminals;

[0014] The dispatch terminal layer includes ship-mounted remote-controlled Beidou position indicating terminals, Beidou / AIS dual-mode forwarding beacons, various general handheld Beidou short message terminals, and existing Beidou short message terminals on various ships, aircraft, vehicles and other platforms;

[0015] The survival terminal layer includes the remote-controlled Beidou-3 personal position-indicating beacon, Beidou / AIS dual-mode forwarding beacon, AIS water-falling position-indicating beacon and various Beidou short message terminals.

[0016] Furthermore, the Beidou situation dispatch and telephone voice service subsystem aggregates and processes situation information from different channels and different types of terminals, responds to and processes Beidou short message distress signals, connects the Beidou network with the telephone duty network, and pushes Beidou to share Beidou situation and command dispatch information;

[0017] The Beidou situation dispatch and telephone voice service subsystem is mainly composed of two levels: base-level service terminals and group-level service terminals. It can integrate the situation and distress information pushed by Beidou RDSS links, AIS channels, networks and other channels, is compatible with multiple Beidou communication protocols, supports the access of various Beidou short message terminals of Beidou-2 and Beidou-3, and realizes the reception of distress information and location information in different formats sent by multiple terminals. It can also expand the supported communication protocols as needed, and realize the interconnection between Beidou network and telephone network. The point-to-point communication, broadcast communication and multicast communication provided by Beidou short message communication service can be used to realize the networking function between system search and rescue terminals and improve data transmission efficiency; combined with the chart drawing system and visualization software development technology, it can realize the visualization situation generation, multi-level sharing and command and dispatch functions.

[0018] Furthermore, the dispatch terminal layer includes ship-mounted remote-controlled Beidou positioning terminals and handheld Beidou terminals, and supports multiple types of Beidou short message terminals equipped on various ships and aircraft platforms. It can report the location of assigned search and rescue forces and receive situation and dispatch information pushed by base-level and group-level service terminals.

[0019] Furthermore, the survival terminal layer includes special survival terminals such as the remote-controlled Beidou-3 personal position-indicating beacon and the Beidou / AIS dual-mode forwarding beacon, which are compatible with the AIS drowning position-indicating beacon, the emergency radio position-indicating beacon, and support various types of general Beidou short message terminals. They are used for people in distress at sea to remotely report distress information and receive feedback information pushed by base-level and group-level service terminals.

[0020] Furthermore, the Beidou situation dispatch and telephone voice service subsystem has the Beidou-2 and Beidou-3 short message communication functions, receives and processes standard position reports, extended position reports and distress messages reported by various Beidou terminals, and integrates other system signals such as AIS to form a comprehensive situation; it can use the Beidou RDSS link for system self-organizing networking, and realize four-level situation sharing and target push functions including base command level, group command level, search and rescue dispatch terminal, and Beidou survival terminal, and can provide support for the implementation of search and rescue operations from mission establishment, plan mapping, water fall calculation, and target distribution.

[0021] Furthermore, the Beidou situation dispatch and telephone voice service subsystem consists of two levels: base command-level service terminals and group command-level service terminals. The base command-level service terminals are generally set up in shore-based command posts, and the group command-level service terminals are generally set up in maritime search and rescue group command posts. The service end can be dynamically networked to form an expandable networking structure. The network topology structure supports flexible adjustment, and supports the base command-level service terminal and the group command-level service terminal to work independently. The "base command-level service terminal + group command-level service terminal" joint working mode allows multiple base commands and group commands to work in parallel to achieve orderly transmission of distress information, situation information, free text and other information.

[0022] Furthermore, the base-level service terminal is based on a high-performance server, equipped with a rich set of serial ports and Ethernet communication interfaces, BeiDou-2 and BeiDou-3 command terminals, and telephone voice call service equipment. BeiDou terminals, satellite communication terminals and AIS receiving equipment can be expanded as needed; the BeiDou situation dispatch and telephone voice service subsystem base-level service software supports remote access and operation of multiple clients through the network, and has the ability to manage in different levels according to user roles; network access users can create and execute different search and rescue tasks according to the granted permissions, and realize group management, identity identification, situation collection, task issuance, target push, situation push and other highest authority data management within the group. System administrator role users are responsible for managing and maintaining the basic operating data of the system.

[0023] Furthermore, the base-level service terminal software adopts a C / S architecture. The server-side software runs on the server equipped with the base-level service terminal. The client software can run on the server or be installed on other laptops, and connect to the server through the network to realize the software operation function.

[0024] The basic command-level service terminal software mainly includes terminal management, task management, communication, situation management, dispatch management, plotting, nautical charts, telephone voice services, views, system settings and other main functions. The above functions can be managed through graphical operation of the client software.

[0025] Furthermore, the main interface of the client software is initially divided into five areas: menu bar, left window, chart window, right window, status bar. The left window and the right window can be folded or expanded through the fold button in the middle; full screen display can be achieved through the full screen button in the lower right corner of the status bar. The left window displays the force information of the opened task, the layer and plotting list of the opened task plotting plan, and the current perception terminal list; the perception terminal list can be filtered by online status and classified based on type; the right window displays system messages and free text and telecommunication records, which can be filtered by time and interaction party, and the display can be controlled as an interactive list or conversation form; the chart window displays the chart base map, and also displays the task plotting plan information, situation plotting and target plotting; distance calculation and task plotting plan compilation can be performed on the chart, and the status bar indicates the connection status, situation push status, longitude and latitude information of the mouse, number of distress terminals, number of unread communication information, number of current channels, and number of communication information to be sent.

[0026] Another object of the present invention is to provide an operation method of the Beidou-based marine survival, situation generation and command and dispatch system, comprising:

[0027] Step 1: Equip personnel with life-saving beacons: Equip offshore personnel with life-saving beacons, distribute universal Beidou boxes or Beidou handheld devices to simulate people falling into the water using universal Beidou short message terminals; offshore personnel can also be equipped with special terminals, such as remote-controlled Beidou-3 personal beacons for important personnel, and for general personnel with a large number of people, they are equipped with Beidou / AIS forwarding beacons and AIS overboard beacons in groups of 10. The team leader is equipped with Beidou / AIS forwarding beacons, and the team members are equipped with AIS overboard beacons;

[0028] Step 2: The search and rescue platform is equipped with Beidou search and rescue dispatch terminal: Aircraft and ships participating in the search and rescue operation should be equipped with Beidou search and rescue dispatch terminal. For ships participating in the search and rescue operation, a ship-use remote control Beidou position indicating terminal can be installed; if the civilian ship is equipped with a Beidou short message terminal, it is not necessary to install it, and use its own Beidou short message terminal to send standard Beidou position reports to the base-level service terminal at a frequency of 3 to 5 minutes; the work boats carried by large search and rescue platforms are equipped with handheld Beidou terminals installed with search and rescue dispatch terminal software to facilitate maritime situation sharing and automatic dispatch guidance;

[0029] Step 3: Set up base-level and group-level service terminals: The shore-based command post and the maritime group command post install base-level service terminals and group-level service terminals. The shore-based command post must provide at least one telephone line for the base-level service terminal. The selection of the Beidou antenna installation location requires the antenna to have good sky reception without obstruction. The client running the software can access the command post video projection;

[0030] Step 4: Beidou survival signal response: If the drowning personnel use the general Beidou short message terminal, they can use the pre-set communication code to send Beidou distress information and open a 5-minute frequency position report to the base-level service terminal; after receiving the survival message, the base-level service terminal automatically highlights and flashes on the situation map to remind, and at the same time dials the set search and rescue platform duty phone for voice aggregation broadcast, completing the Beidou distress information entering the command link; after receiving the distress call, the duty officer replies to the rescue object through the telephone button, and presses the level Report, the command post starts to organize the rescue operation; the person who falls into the water will automatically send an extended position report and survival information to the base level using the remote-controlled BeiDou-3 personal position indicator beacon. The BeiDou / AIS forwarding position indicator and AIS drowning position indicator will also be automatically turned on after falling into the water. The BeiDou / AIS forwarding position indicator will automatically receive the AIS drowning signal within 2 to 3 nautical miles nearby, and forward it to the base level service terminal through the BeiDou short message. After receiving various survival information, the base level service terminal will automatically integrate and dynamically update the plot on the nautical chart;

[0031] Step 5: Organize search and rescue forces and conduct search and rescue operations: After the command post analyzes the distress information, it organizes the search and rescue forces, clarifies the command relationship, and each search and rescue platform starts position reporting. The base command level, group command level, and each search and rescue platform share the situation and command and dispatch through the Beidou link, and distribute push target information to each platform.

[0032] Step six, verifying the falling into the water: while completing the search and rescue force formation, the command post dispatches an aircraft to conduct video verification.

[0033] Step seven: Rescue after falling into the water: After the rescue force reaches the sea area where the person fell into the water, rescue operations are carried out using lifeboats and other equipment.

[0034] Step 8. Search and rescue statistics for people who fall into the water: After the people are rescued, the search and rescue platform uses the Beidou search and rescue dispatch terminal to report the name, unit, etc. of the rescued people, and the basic command-level and group command-level service terminals carry out statistics on the search and rescue progress.

[0035] Another object of the present invention is to provide a computer device, which includes a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the operating method of the Beidou-based maritime survival, situation generation and command and dispatch system.

[0036] Another object of the present invention is to provide a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the processor executes the steps of the operating method of the Beidou-based maritime survival, situation generation and command and dispatch system.

[0037] Another object of the present invention is to provide an information data processing terminal, which is used to implement the Beidou-based marine survival, situation generation and command and dispatch system.

[0038] In combination with the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solutions to be protected by the present invention are as follows:

[0039] First, for the two situations of sporadic people falling into the water and large-scale people falling into the water at sea, the present invention is based on the Beidou short message communication link, and designs an integrated system for survival, situation generation and command and dispatch at sea, which consists of three software and hardware processing layers: information service layer, dispatch terminal layer and survival terminal layer. The system has the characteristics of openness and cross-domain integration, and can be compatible with various Beidou and AIS survival terminal communications and survival positioning information, and unmanned automatic voice Unicom existing various telephone duty platforms. Through the Beidou link, the search and rescue force is quickly organized, and multi-source information fusion is used to realize joint search and rescue situation generation and command and dispatch dispatch. In addition to command and dispatch in the form of Beidou short message text at the search and rescue dispatch layer, a special command and dispatch terminal software is also designed to realize graphical situation sharing and command guidance. It can be seamlessly integrated into the country's existing maritime search and rescue information service system, and effectively realize the Beidou-based open maritime survival, situation generation and command and dispatch application mode of the whole process of "survival signal issuance-survival signal perception-search and rescue situation generation-auxiliary dispatch guidance".

[0040] Second, the present invention breaks through the traditional application mode that Beidou rescue information only flows within the Beidou link, establishes an open architecture based on Beidou's network and information intelligence connection, system integration, and terminal direct connection, and relies on the Beidou link to realize the visualization and integration of multi-source situation information, flexible grouping and scheduling of search and rescue forces, automatic distribution and push of targets, dynamic sharing of multi-level information and other search and rescue functions. It can achieve the goal of promoting the integration and efficiency of Beidou-3's new quality services in the network and information system of joint rescue at sea. The normalized operation platform formed through the construction of this system can provide the most convenient way for cross-domain connection with national special service platforms such as "12395" and "110", automatically exchange maritime survival information, and provide an efficient Beidou-based guarantee means for survival in distress at sea and organizing search and rescue operations.

[0041] Third, the technical solution of the present invention fills the technical gap in the industry at home and abroad: in addition to the RNSS positioning service, the satellite navigation system's unique RDSS global short message communication service function provides a guaranteed means of survival for those in distress at sea, especially in areas that cannot be covered by mobile phone networks. However, at present, a national unified maritime distress survival service platform has not yet been established on the Beidou short message link. Only some commercial companies have established their own closed small service platforms, and they do not have the ability to automatically process non-formatted survival information. After being in distress at sea, even if the distressed personnel are equipped with Beidou RDSS terminals, they will face the dilemma of not knowing which Beidou user ID to send a distress message to, and miss the best time to survive. After years of construction, my country's maritime search and rescue system has made great progress. In order to achieve rapid response to distress at sea, a national "12395" water distress telephone service system has been established. The present invention fills the technical gap in the industry from two aspects. First, it can automatically connect the Beidou link and the national "12395" water distress telephone service system according to the settings of the distressed user without manual supervision. It can also connect any phone specified by the user in the Beidou short message according to the user's message information, and realize cross-domain automatic connection of distress survival information. Second, relying on the Beidou link, a graphical intelligent search and rescue situation generation and maritime command and dispatch platform system that can cover the world is established, providing a fast and effective command and dispatch means for joint search and rescue at sea.

[0042] Fourth, the introduction of the Beidou-based maritime survival, situation generation and command and dispatch system has solved multiple technical challenges and brought significant technological progress. The following are the main technological advances of the system:

[0043] 1) Processing and display of comprehensive multi-source situation information:

[0044] By integrating multiple communication channels such as Beidou RDSS links, AIS channels, and networks, the system can receive and process distress messages and location information in multiple formats, thereby improving the speed of information acquisition and response in maritime emergencies.

[0045] Compared with traditional single or limited communication channels, the system's comprehensive information processing capabilities significantly improve the efficiency and accuracy of maritime search and rescue.

[0046] 2) Efficient command and dispatch capabilities:

[0047] The system can realize the interconnection between Beidou network and telephone network, provide point-to-point, broadcast and multicast communications, thereby realizing efficient networking and data transmission between search and rescue terminals.

[0048] This efficient command and dispatch capability is crucial for quickly responding to maritime emergencies and rationally allocating search and rescue resources.

[0049] 3) Visual situation generation and sharing:

[0050] By combining the chart drawing system and visualization software development technology, the system can generate intuitive visualization situation maps and realize multi-level situation information sharing and command and dispatch functions.

[0051] This visual representation not only improves the readability of information, but also helps commanders make faster and more accurate decisions.

[0052] 4) Flexible network topology and expansion capabilities:

[0053] The server can perform dynamic networking to form an expandable networking structure, support flexible adjustment of network topology, and adapt to the needs of different search and rescue situations.

[0054] This flexibility and scalability ensures that the system can operate efficiently in a variety of search and rescue environments.

[0055] 5) High-performance and multi-functional service terminal:

[0056] The basic service terminal is based on high-performance servers, equipped with rich communication interfaces and a variety of Beidou terminals, supports multi-client remote access and operation, and provides powerful background support and operational flexibility.

[0057] This high-performance and multi-functional service terminal greatly improves the system's processing capabilities and adaptability.

[0058] 6) User-friendly operation interface:

[0059] The client software design takes into account the user's operational convenience, providing a clear interface layout and operational logic, ensuring that users can perform tasks quickly and accurately.

[0060] The user-friendly operating interface reduces the risk of operating errors and improves the efficiency of overall operations.

[0061] In summary, the Beidou-based maritime survival, situation generation and command and dispatch system has brought significant technological advances in information processing, command and dispatch, visualization, network organization, service terminal performance and user operation interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0063] Figure 1It is a schematic diagram of the overall structure of the system provided by an embodiment of the present invention;

[0064] Figure 2 is a system information flow diagram provided by an embodiment of the present invention;

[0065] Figure 3 It is a schematic diagram of the configuration composition of a typical base-level service terminal provided by an embodiment of the present invention;

[0066] Figure 4 It is a schematic diagram of the configuration composition of a typical group finger-level service terminal provided by an embodiment of the present invention;

[0067] Figure 5 Schematic diagram of a ship-based remote-controlled Beidou position indicating terminal (simplified version) provided in an embodiment of the present invention;

[0068] Figure 6 is a schematic diagram of a marine display and control unit provided by an embodiment of the present invention;

[0069] Figure 7 This is a Beidou terminal equipment modeling analysis diagram provided by an embodiment of the present invention;

[0070] Figure 8 It is a schematic diagram of classification of Beidou terminal distress signal data elements provided by an embodiment of the present invention;

[0071] Fig. 9 It is a schematic diagram of a process of parsing Beidou short message data information into identification information provided by an embodiment of the present invention;

[0072] Fig.10 is a schematic diagram of data encoding format changes provided by an embodiment of the present invention;

[0073] Fig.11 It is a schematic diagram of data encoding format conversion provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0074] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0075] In view of the problems existing in the prior art, the present invention provides a Beidou-based marine survival, situation generation and command and dispatch system. The present invention is described in detail below in conjunction with the accompanying drawings.

[0076] The following are two specific embodiments and implementation schemes of Beidou-based maritime survival, situation generation and command and dispatch systems:

[0077] Example 1: Marine Disaster Emergency Response System

[0078] 1) System composition:

[0079] Information service layer: includes base-level service terminals and group-level service terminals, which use Beidou RDSS links and AIS channels to collect maritime vessel and waterway information.

[0080] Dispatching terminal layer: includes ship-mounted remote-controlled Beidou positioning terminals and handheld Beidou terminals for use by ships to transmit real-time location and emergency information.

[0081] Survival terminal layer: equipped on each ship, including Beidou-3 personal position indicating beacon and AIS drowning position indicating beacon, which is used for personal rescue in emergency situations.

[0082] 2) Operation process:

[0083] When the ship is in distress, the survival terminal layer equipment is automatically activated and sends a distress signal to the information service layer.

[0084] After receiving the signal, the information service layer immediately generates a situation map on the base-level and group-level service terminals to assess the emergency situation.

[0085] The basic command-level service terminal directs the nearest ships and search and rescue teams to go to the rescue through Beidou short messages and telephone voice services.

[0086] The survival terminal layer equipment continuously transmits the location of people in distress, assisting the search and rescue team to locate them quickly.

[0087] Example 2: Offshore oil platform accident response system

[0088] 1) System composition:

[0089] Information service layer: Integrate Beidou situation dispatch and telephone voice services to realize information exchange between offshore oil platforms and shore-based command centers.

[0090] Dispatch terminal layer: deployed on oil platforms and nearby ships for real-time monitoring and command and dispatch.

[0091] Survival terminal layer: deployed on oil platforms, including Beidou / AIS dual-mode forwarding beacons and various Beidou short message terminals, used for personal and equipment location tracking in emergency situations.

[0092] 2) Operation process:

[0093] When an accident occurs, the survival terminal layer is immediately activated to send emergency and location information to the information service layer.

[0094] The information service layer generates real-time situation maps at the base-level service terminals to assess the impact of accidents and potential risks.

[0095] The basic command-level service terminal directs and dispatches nearby ships and emergency rescue teams to carry out rescue and accident handling.

[0096] The system coordinates the forces of multiple parties through the Beidou network, optimizes the allocation of rescue resources, and updates the rescue progress and situation changes in real time.

[0097] The two embodiments demonstrate the practical application of the system in different marine emergency situations, including shipwreck emergency response and offshore oil platform accident response, showing the system's wide applicability and high efficiency in marine survival, situation generation and command and dispatch.

[0098] In order to enable those skilled in the art to fully understand how to implement the present invention in detail, this section is an explanatory embodiment that expands and describes the technical solution of the claims.

[0099] 1. Overall technical solution

[0100] The present invention aims to integrate Beidou short message service into the existing national maritime joint search and rescue information support system, takes the realization of cross-domain information interconnection as the entry point, and takes Beidou link to enable search and rescue situation generation and command and dispatch as the basis. In accordance with the principles of "open compatibility, rapid networking, cross-domain interconnection, and flexible expansion", the present invention carries out the optimization design of the search and rescue information service system based on Beidou-3, constructs a rescue information software and hardware processing platform of "Beidou network system" + "various duty telephone networks", forms a Beidou short message information rapid perception of distress and survival and an emergency response and disposal mode based on the rapid organization and command and dispatch of Beidou search and rescue forces, and innovates mainly from two levels: system function realization and system application mode.

[0101] The system functional design has the following features:

[0102] (1) The system is compatible with various Beidou short message terminals, which can be used as both search and rescue terminals and survival terminals in the system.

[0103] (2) The system can complete the self-organizing network of Beidou terminals on the search and rescue platform by relying solely on the Beidou RDSS communication link.

[0104] (3) The system can realize multi-level situation sharing and communication dispatching of shore-based command posts, maritime search and rescue group command posts, search and rescue platforms, and survival terminals through Beidou RDSS links. The number of shore-based command posts, maritime search and rescue group command posts, search and rescue platforms, and survival terminals participating in situation sharing can be dynamically adjusted at any time according to needs.

[0105] (4) The system can calculate the drifting path of people who fall into the water based on wind direction and ocean current data.

[0106] (5) The system is compatible with receiving and integrating remotely forwarded AIS information.

[0107] (6) The system can automatically assign search and rescue targets to the search and rescue platforms participating in the operation and provide guidance.

[0108] (7) The system can remotely control the dedicated terminal to implement functions such as start and stop position reporting (extended position reporting) and binding of various parameters.

[0109] (8) The system can quickly bind batches of documents to dedicated terminals via NFC.

[0110] (9) The system can realize two-way communication between telephone users and Beidou short message terminal users through speech synthesis and speech recognition.

[0111] (10) The system can automatically integrate position reports and free text and electronic information to generate an integrated maritime search and rescue situation.

[0112] (11) The system is capable of manually and automatically completing chart plotting operations for search and rescue operations.

[0113] (12) The system can be accessed and shared by multiple users through the network.

[0114] The system application mode design has the following characteristics:

[0115] (1) There is no need to assign special personnel to be on duty for Beidou search and rescue.

[0116] (2) Use voice to automatically connect Beidou survival information to the existing rescue platform telephone duty system to achieve rapid perception and response of survival signals.

[0117] (3) Use BeiDou positioning information to accurately report the location of people who fall into the water.

[0118] The integrated system of maritime survival, situation generation and command and dispatch based on Beidou mainly consists of three parts: information service layer, dispatch terminal layer and survival terminal layer. The overall structure is as follows: Figure 1 shown.

[0119] The Beidou situation dispatch and telephone voice service subsystem aggregates and processes situation information from different channels and different types of terminals, responds to and processes Beidou short message distress signals, connects the Beidou network with the telephone duty network, and pushes Beidou to share Beidou situation and command dispatch information. It is based on the core of the system.

[0120] The Beidou situation dispatch and telephone voice service subsystem is mainly composed of two levels: base-level service terminals and group-level service terminals. It can integrate the situation and distress information pushed by Beidou RDSS links, AIS channels, networks and other channels, is compatible with multiple Beidou communication protocols, supports the access of various Beidou short message terminals of Beidou-2 and Beidou-3, and realizes the reception of distress information and location information in different formats sent by multiple terminals. It can also expand the supported communication protocols as needed, and realize the interconnection between Beidou network and telephone network. The point-to-point communication, broadcast communication and multicast communication provided by Beidou short message communication service can be used to realize the networking function between system search and rescue terminals and improve data transmission efficiency. Combined with the chart drawing system and visualization software development technology, it realizes the visualization situation generation, multi-level sharing and command and dispatch functions.

[0121] The Beidou search and rescue dispatch terminal layer includes ship-mounted remote-controlled Beidou positioning terminals and handheld Beidou terminals. It supports multiple types of Beidou short message terminals equipped on various ships and aircraft platforms. It can report the location of assigned search and rescue forces and receive situation and dispatch information pushed by base-level and group-level service terminals.

[0122] The survival terminal layer includes special survival terminals such as the remote-controlled Beidou-3 personal position-indicating beacon and Beidou / AIS dual-mode forwarding beacon. It is compatible with the AIS overboard position-indicating beacon, emergency radio position-indicating beacon, and supports various types of general Beidou short message terminals. It is used for people in distress at sea to remotely report distress information and receive feedback information pushed by base-level and group-level service terminals.

[0123] 2. System information processing flow

[0124] The reporting of positions by all terminals to the base level is the basis for the Beidou situation dispatch and telephone voice service subsystem to build a group. It is an information structure of identity recognition, position reporting, and information push relationship established with the base service end as the core node. The system information flow diagram is as follows: Figure 2 shown.

[0125] 3. Beidou situation dispatch and telephone voice service subsystem

[0126] 3.1 Subsystem structure

[0127] The Beidou situation dispatch and telephone voice service subsystem has the Beidou-2 and Beidou-3 short message communication functions, receives and processes standard position reports, extended position reports and distress messages reported by various Beidou terminals, and integrates other system signals such as AIS to form a comprehensive situation; it can use the Beidou RDSS link for system self-organizing networking, and realize four-level situation sharing and target push functions including basic command level, group command level, search and rescue dispatch terminal, and Beidou survival terminal, and can provide support for the implementation of search and rescue operations from mission establishment, plan mapping, water fall calculation, and target distribution.

[0128] The Beidou situation dispatch and telephone voice service subsystem consists of two levels: base command-level service terminals and group command-level service terminals. The base command-level service terminals are generally set up in shore-based command posts, and the group command-level service terminals are generally set up in maritime search and rescue group command posts. The service end can be dynamically networked to form an expandable networking structure. The network topology structure supports flexible adjustment, and supports the base command-level service terminal and the group command-level service terminal to work independently. The "base command-level service terminal + group command-level service terminal" joint working mode allows multiple base commands and group commands to work in parallel to achieve orderly transmission of distress information, situation information, free text and other information.

[0129] The base command-level service terminal is based on a high-performance server, equipped with a rich set of serial and Ethernet communication interfaces, BeiDou-2 and BeiDou-3 command terminals, and telephone voice call service equipment. BeiDou terminals, satellite communication terminals and AIS receiving equipment can be expanded as needed. The base command-level service software of the BeiDou situation dispatch and telephone voice service subsystem adopts a C / S architecture, supports remote access and operation of multiple clients through the network, and has hierarchical management capabilities based on user roles. Network access users can create and execute different search and rescue missions according to the permissions granted, and realize group management, identity identification, situation collection, task issuance, target push, situation push and other data management with the highest authority within the group. System administrator role users are responsible for managing and maintaining the basic operating data of the system. The typical base command-level service terminal configuration structure is as follows: Figure 3 shown.

[0130] In order to facilitate rapid installation on the maritime search and rescue platform and adapt to the harsh working environment at sea, the group command-level service terminal is designed in accordance with the lightweight concept, with a portable reinforcement machine as the core, equipped with basic serial ports and Ethernet communication interfaces, and equipped with Beidou-3 command terminals. Beidou terminals, satellite communication terminals and AIS receiving equipment can be expanded as needed, but there is no telephone voice service function. The Beidou situation dispatch and telephone voice service subsystem group command-level service software adopts a C / S architecture, which must be able to support multiple clients to access operations simultaneously through Ethernet and perform different search and rescue tasks. The group command level can be under the jurisdiction of multiple search and rescue dispatch terminals. The group command level has the functions of group management, reporting its own position and its own collected situation information, receiving tasks issued by the base command level, task friendly situation, task target push, and can also create its own tasks, command and manage the search and rescue dispatch terminals that have entered the group, etc.

[0131] 3.2 Subsystem software design

[0132] The Beidou situation dispatch and telephone voice service subsystem software is designed according to the two levels of base-level service terminals and group-level service terminals, adapting to the localized operating environment, and establishing a client + server model to adapt to multi-type mode applications. The main functions in the system are based on the QT cross-platform UI interface library and developed in C++.

[0133] 3.2.1 Basic service terminal software function design

[0134] The basic-level service terminal software adopts C / S architecture. The server-side software runs in the background on the server equipped with the basic-level service terminal. The client software can run on the server or be installed on other laptops, and the software operation functions are realized by connecting to the server through the network.

[0135] The basic command-level service terminal software mainly includes terminal management, task management, communication, situation management, dispatch management, plotting, nautical charts, telephone voice services, views, system settings and other main functions. The above functions can be managed through graphical operation of the client software.

[0136] The main interface of the client software is divided into five areas: menu bar, left window, chart window, right window, and status bar. The left window and the right window can be folded or expanded using the fold button in the middle. Full-screen display can be achieved using the full-screen button in the lower right corner of the status bar. The left window displays the force information of the opened tasks, the layers and plotting lists of the opened task plotting plans, and the current perception terminal list. The perception terminal list can be filtered by online status and classified based on type. The right window displays system messages and free text and telecommunication records, which can be filtered by time and interacting party, and controlled to be displayed as an interactive list or conversation. The chart window displays the base map of the chart, as well as the mission plotting plan information, situation plotting, and target plotting. Distance calculations and mission plotting plan compilation can be performed on the chart. The status bar indicates the connection status, situation push status, longitude and latitude information of the mouse, the number of distress terminals, the number of unread communication messages, the current number of channels, and the number of communication messages to be sent. The schematic diagram of the main interface of the software is as follows: Figure 4 shown.

[0137] (1) User rights management of basic service terminals

[0138] The basic level supports multiple users logging into the server system at the same time. Users in the system are divided into three categories: system administrator users, task administrator users, and guest users.

[0139] System administrator user: Multiple system administrator accounts can be set up in the system. Only one system administrator account can be online at the same time. The system administrator account has the authority to manage system-level operating parameters, and implement system configuration-level management functions such as user accounts, attribute information, Beidou equipment, offline thresholds, AIS data sources, and telephone voice services. Supports operation management of business functions such as tasks, plans, and communication scheduling in all systems. Other task administrator users can be authorized to operate and manage related tasks, and observer users can be authorized to browse the information of this task.

[0140] Task administrator user: The task administrator account is created by the system administrator user. The task administrator account can create task plans, communication scheduling and other business functions through the system. The operations are performed according to the principle of who creates, who manages. The creating account can authorize other task administrator accounts to operate and manage related tasks, and authorize observer accounts to browse the task information.

[0141] Guest user: can browse the basic information, status, and business documents of the corresponding tasks.

[0142] (2) Terminal management function

[0143] The terminal management function of the base-level service terminal software mainly realizes base-level situation sharing, group invitation, terminal reporting frequency, terminal key management, communication group management, situation push control, terminal operation record and other functions.

[0144] (3) Task management function

[0145] It mainly includes functions such as creating new tasks, opening tasks, execution control, task pushing, task editing, and task approval.

[0146] (4) Communication function

[0147] It mainly includes free text and telegram, voice communication, picture transmission, custom coded communication, standard coded communication, communication list, alarm code setting, communication query and other functions.

[0148] (5) Situation management function

[0149] It mainly includes terminal layer settings, trajectory playback, water drift calculation, rescue object list, task assigned force situation list, AIS display type setting, offline threshold setting, situation and target system information display, position reception and situation fusion, target status setting, etc.

[0150] Situation fusion refers to the location information and alarm information reported by various sources. The received location information and alarm information are fused according to the identification ID, and the location information is bound to the platform attributes. In the fusion process, the identification ID is prioritized for fusion, and the platform attribute name information is assigned after fusion. Situation fusion is not only based on the unique identification, but also based on the rule of priority of the latest time. After situation fusion, the platform situation information and target information are formed. The base level's own location information is updated in real time at a high frequency through the Beidou RNSS positioning information of the machine.

[0151] (6) Scheduling management function

[0152] Mainly includes functions such as search and rescue target push and search and rescue route planning

[0153] (7) Design of plotting and chart management functions

[0154] It mainly completes functions such as marking of search and rescue mission operation areas, distance calculation on maps, hydrological and meteorological data management, chart layer settings, and chart corrections.

[0155] (8) System settings function

[0156] It mainly completes functions such as platform name and platform symbol setting, current Beidou card information status query, local Beidou device management, user account management, telephone voice service, time setting, AIS device management, display property setting, etc.

[0157] 3.2.2 Software Function Design of Group-Level Service Terminal

[0158] When designing the group-level service terminal software, the C / S architecture is also adopted, which is divided into group-level server-side software and group-level client software. The group-level service terminal can operate in an autonomous closed loop with subordinate terminals. Compared with the base-level service terminal software, the group-level service terminal software is mainly different from the following considerations: first, there is no need for telephone voice service functions; second, the server-side part of the group-level service terminal software runs on a portable industrial computer, and the operating system and computing power are different from the base-level; third, the group-level service terminal software runs according to task requirements, while the base-level service terminal runs 7*24 hours uninterruptedly; fourth, the group-level service terminal software is in the middle layer of the entire system architecture. In addition to collecting the situation information of some subordinate terminals and pushing group-level scheduling information, it also needs to have its own location and situation information reporting and receiving functions. Fifth, the type and quantity expansion capabilities of the group-level service terminal software communication channels are greatly affected by volume and weight restrictions.

[0159] As the intermediate node of the situation and voice service system, the group command-level service terminal software can formulate search and rescue missions and report them to the base command-level service terminal for approval, and execute search and rescue missions. In addition to relying on the base command-level service terminal to obtain situation and target intelligence information, the group command-level service terminal can also independently assume the dispatch management responsibilities of the search and rescue mission group and have the ability to provide situation and target intelligence to the search and rescue dispatch terminal in the mission. It can also obtain regional situation intelligence during the execution of the mission based on AIS.

[0160] 4. Beidou search and rescue dispatch terminal

[0161] Beidou search and rescue dispatch terminals are equipped on various offshore platforms and aerial platforms, and are divided into general Beidou search and rescue dispatch terminals and special Beidou search and rescue dispatch terminals. General Beidou search and rescue dispatch terminals refer to various Beidou short message terminals equipped by offshore search and rescue platforms and aerial search and rescue platforms themselves. Special Beidou search and rescue dispatch terminals refer to ship-based remote control Beidou position indicating terminals and various handheld Beidou terminals that can run search and rescue dispatch terminal software. General Beidou search and rescue dispatch terminals can only complete situation push and command and dispatch communications in text form through standard position reports and Beidou short message free text and telegram functions. Special Beidou search and rescue dispatch terminals can automatically complete situation sharing, command communications, search and rescue route planning and automatic guidance in a graphical manner, and enhance the joint command and dispatch capabilities and search and rescue efficiency of joint maritime search and rescue through technical empowerment.

[0162] During joint search and rescue operations at sea, search and rescue forces are often temporarily formed according to the mission, and it is difficult to have the conditions for systematic training and prior drills. In addition, the quality of personnel is uneven. The hardware design of the dedicated Beidou search and rescue dispatch terminal must meet the requirements of "easy installation, install and go, and ready to use". The software design must meet the requirements of "remote background configuration, simplified foreground operation, and mobile style design", so that users can quickly get started after getting it.

[0163] 4.1 Marine Remote Control Beidou Position Indicator Terminal

[0164] The marine remote-controlled Beidou positioning terminal mainly consists of three parts: the universal Beidou-3 short message terminal, the universal Beidou-3 terminal remote control rod and the marine display and control unit.

[0165] The universal BeiDou-3 short message terminal and the universal BeiDou-3 terminal remote control rod can form a marine remote control BeiDou position indicating terminal (simplified version) to work independently. The universal BeiDou-3 terminal remote control rod has a built-in battery and contains solar panels. It is mainly used to provide power, control, data storage, temperature, and azimuth detection functions for the mass-produced universal BeiDou-3 short message terminal (mushroom head). It is compatible with the mass-produced BeiDou mushroom head and has a built-in battery. After installation, it can work independently for a long time without taking power from the platform. No training is required for installation. It only needs to be fixed with stainless steel clamps or cable ties in an unobstructed position on the installation platform to the sky signal. After installation, turn on the power switch and put it into use without any configuration by the crew. All configurations can be completed remotely by the background operator through the BeiDou air link, truly achieving "easy installation, ready to go, ready to use".

[0166] The standard version of the marine remote control Beidou position terminal is equipped with a marine display and control unit based on the simplified version. The marine display and control unit is generally installed in the search and rescue platform cab, connected to the universal Beidou-3 terminal remote control stick through the RS-422 port, equipped with an AIS receiving and transmitting module, completes the reception and processing of Beidou and AIS situation information, receives base-level and group-level target situation push and command and dispatch information, and displays nautical charts and search and rescue route planning. After installing the marine display and control unit, the universal Beidou-3 terminal remote control stick can be powered by the marine display and control unit, and there is no need to install solar panels.

[0167] 4.2 Beidou Search and Rescue Dispatch Terminal Software

[0168] Generally, all kinds of Beidou handheld devices that can run search and rescue dispatch terminal software can be used as dedicated Beidou search and rescue dispatch terminals to dynamically apply for access to group and base level service terminals, receive comprehensive situation, target push, and command commands in the format defined by the Beidou situation dispatch and telephone voice service subsystem, and have the functions of completing search and rescue route planning and navigation. Such terminals are generally equipped on short-term work platforms such as search and rescue work boats and search and rescue aircraft to command and guide search and rescue personnel to quickly find the objects in distress.

[0169] 5. Survival Terminal

[0170] The survival terminal is used for people in distress to send survival signals and receive system feedback information. It is divided into general survival terminals and special survival terminals.

[0171] Universal terminals include the common AIS man-overboard beacons, emergency radio beacons, and various types of universal Beidou short message terminals. Currently, the Beidou universal short message terminals that can be used for survival at sea sold on the market mainly include Beidou boxes, Beidou handheld devices, and other product forms. This type of short message terminal has deficiencies in signal reception sensitivity, antenna working elevation angle, and compatibility with life jackets. Second, in the face of large-scale people falling into the water, each person who falls into the water is equipped with a Beidou survival terminal, which increases the cost of use and occupies too much Beidou number resources. The working principle of the commercially available AIS man-overboard beacon determines that its AIS signal transmission distance is usually only 2 to 3 nautical miles, and it cannot transmit survival signals remotely.

[0172] The dedicated survival terminal includes the Beidou-3 personal position indicating beacon and the Beidou / AIS dual-mode repeater beacon. To address the above-mentioned shortcomings, the application scope of the AIS drowning position indicating beacon has been expanded, the signal reception sensitivity has been improved, the working elevation angle has been expanded, the adaptability of life jackets has been improved, and the two-way information transmission capability has been enhanced, which can better meet the needs of survival in distress at sea.

[0173] When a person using a universal Beidou short message terminal falls into the water and is in distress, he or she can use the universal Beidou short message terminal to send Beidou standard position reports to the system at a certain frequency. At the same time, he or she can also use the universal Beidou short message terminal to send text distress messages to the system. The text messages sent in the system telephone voice service short message format will also be automatically converted into voice by the system and dialed to the duty phone specified by the user or set by the system.

[0174] When a person falls into the water and is in distress, the dedicated survival terminal can automatically turn on after falling into the water, in addition to the functions of the general Beidou short message terminal, and use a dedicated extended position report format to send extended information such as temperature and flow direction to the base-level and group-level service terminals. Rescuers can also remotely set parameters such as remote control working mode and position reporting frequency through the base-level and group-level service terminals, greatly improving the efficiency of search and rescue operations and reducing the use requirements for people who fall into the water.

[0175] 6. General usage process

[0176] (1) Personnel equipped with life-saving markers

[0177] Equip offshore workers with life-saving beacons. Provide offshore workers with universal Beidou boxes or Beidou handheld devices to simulate people falling into the water using universal Beidou short message terminals. Special terminals can also be provided for offshore workers, such as remote-controlled Beidou-3 personal beacons for important personnel, and for general personnel with a large number of people, 10 people in a group are equipped with Beidou / AIS forwarding beacons and AIS overboard beacons. The team leader is equipped with Beidou / AIS forwarding beacons, and the team members are equipped with AIS overboard beacons.

[0178] (2) The search and rescue platform is equipped with Beidou search and rescue dispatch terminal

[0179] Aircraft and ships involved in search and rescue operations should be equipped with Beidou search and rescue dispatch terminals. For ships involved in search and rescue operations, a ship-mounted remote-controlled Beidou position indicating terminal can be installed. If a civilian ship is equipped with a Beidou short message terminal, it is not necessary to install it, and use its own Beidou short message terminal to send a standard Beidou position report to the base-level service terminal at a frequency of 3 to 5 minutes. The work boats carried by large search and rescue platforms are equipped with handheld Beidou terminals installed with search and rescue dispatch terminal software to facilitate maritime situation sharing and automatic dispatch guidance.

[0180] (3) Set up base-level and group-level service terminals

[0181] The shore-based command post and the maritime group command post shall install the base command-level service terminal and the group command-level service terminal. The shore-based command post shall provide at least one telephone line for the base command-level service terminal. The selection of the Beidou antenna installation location requires that the antenna has good sky reception without obstruction. The client running software can access the command post video projection.

[0182] (4) Beidou survival signal response

[0183] If the drowning personnel use the universal Beidou short message terminal, they can use the pre-set communication code to send Beidou distress information and open the 5-minute frequency position report to the base-level service terminal. After receiving the survival message, the base-level service terminal automatically highlights and flashes on the situation map to remind, and at the same time calls the set search and rescue platform duty phone for voice aggregation broadcast, completing the Beidou distress information into the command link. After receiving the distress call, the duty officer replies to the rescue object through the telephone key and reports according to the level. The command post begins to organize the rescue operation. If the drowning personnel use the remote-controlled Beidou-3 personal position indicator, they will automatically send extended position reports and survival information to the base-level. If the Beidou / AIS forwarding position indicator and AIS drowning position indicator are used, they will also be automatically turned on after falling into the water. The Beidou / AIS forwarding position indicator will automatically receive the AIS drowning signal within 2 to 3 nautical miles nearby, and forward it to the base-level service terminal through the Beidou short message. After receiving various survival information, the basic command-level service terminal automatically integrates and dynamically updates the information on the nautical chart.

[0184] (5) Organize search and rescue forces and carry out search and rescue operations

[0185] After the command post analyzes the distress message, it organizes the search and rescue forces, clarifies the command relationship, and each search and rescue platform starts reporting its position. The base command level, group command level, and each search and rescue platform share the situation and command and dispatch through the Beidou link, and distribute and push target information to each platform.

[0186] (6) Verification of falling into water

[0187] While completing the search and rescue force formation, the command post dispatched an aircraft to conduct video verification.

[0188] (7) Rescue of people falling into water

[0189] After the rescue force reaches the sea area where the person fell into the water, they will carry out rescue operations using lifeboats and other equipment.

[0190] (8) Statistics on search and rescue of people falling into the water

[0191] After the people are rescued, the search and rescue platform uses the Beidou search and rescue dispatch terminal to report the name, unit and other information of the rescued people, and the basic and group-level service terminals carry out statistics on the search and rescue progress.

[0192] 7. Key technologies

[0193] (1) Beidou Command Machine Integrated Access Design

[0194] The system needs to support the access of different types of Beidou command machines, and can realize the data information analysis of different types of command machines and the unified management of Beidou communication resources, and realize the dynamic configuration of Beidou command machine channel resource capabilities. Multiple types of command machines have different protocols, different channel types, and different channel capabilities, and the system design supports the dynamic expansion of equipment from different manufacturers, so the integrated access of Beidou command machines cannot be implemented by hard coding to specify the protocol type.

[0195] Design countermeasures: Through functional modeling of Beidou system terminal equipment, the functions of Beidou terminal equipment are described by establishing functional models, and unified operation model support is provided for the integrated access of command machines. By parameterizing and abstracting the operation model, the unified operation of the model is described using parameterized description methods, so as to achieve command control and reported data information analysis for different Beidou terminals. Beidou terminal equipment has three main application functions: communication, positioning and navigation, and timing, and two main equipment status detection functions: Beidou IC information detection and signal reception status. Figure 5 As shown. For the Beidou terminal equipment function modeling, parameters are stripped according to the equipment function information content and the corresponding Beidou terminal protocol to form a Beidou terminal equipment function parameter list.

[0196] After the Beidou terminal is modeled, the Beidou device is described by formatting parameter description method to send commands and receive information. The configuration file specifies the parameters for controlling the Beidou device to perform terminal operations, and determines the filling relationship of the operation parameters under the command, so as to complete the command conversion. The configuration file also specifies the parameters for parsing the data reported by the Beidou device, agrees on the identification protocol header and response information position for processing the reported information, and performs frame search processing on the received information. It is identified according to the identification protocol header, and finally the corresponding parameters are parsed according to the configuration parameter position to obtain the reported data information content. The final parameterized Beidou terminal device description is shown below, which is described in XML format.

[0197] After the Beidou terminal equipment parameterization model is established, the Beidou terminal equipment is data abstracted to form the Beidou equipment information model and the communication protocols of various remote Beidou equipment are data modeled to enable various types of Beidou to access the system with simple configuration. The system establishes corresponding data structures for parameterized Beidou description information to form the corresponding logic implementation in the software. All data structures contain the corresponding Beidou terminal description information to achieve unified data processing parameters and processes.

[0198] (2) Dynamic distress signal coding and recognition design

[0199] Beidou system has established three standard formats for short message communication coding: BCD coding, Chinese character coding, and mixed coding. Beidou terminal equipment can expand various custom formats based on BCD coding to send distress signals. As an open interconnected service system, this system needs to be able to identify short messages with different formats and protocols from multiple terminal models as distress signal codes, and needs to dynamically and quickly access distress signals with new coding formats. How to effectively identify distress signals and the location information therein is a difficult point.

[0200] Design countermeasures: This system design provides a flexible configuration of distress signal coding recognition technology design and implementation. After obtaining the distress signal format, the distress signal coding recognition can be quickly realized without changing the code, and integrated into the system business. The system analyzes the basic meaning requirements of the distress signal and finds that the Beidou terminal can send a distress signal containing data element classification, such as Figure 8 shown.

[0201] Based on the target data type of metadata, this system implements a data parser based on binary, text information, data mapping and other configurable parameters, provides a software interface to parse metadata in different formats, takes the parsing results as a metadata set, configures the elements in the metadata set to be filtered and output as identified information to the business processing system, and the processing process is as follows: Fig. 9 shown.

[0202] The system supports setting up multiple different formats of distress signal coding identification parameters at the same time. After receiving the Beidou short message, it performs compliance matching according to the configured distress signal coding identification parameter sequence for different protocols. If the match is successful, metadata parsing is performed according to the configured parameters. The parsing process has an automatic verification function. Once the verification fails, it is considered that it does not comply with the configuration of this protocol, and other distress signal coding identification parameters are called in sequence for parsing, and finally correct parsing is achieved.

[0203] (3) Design of communication protocol with low frequency and fixed packet length

[0204] This system can realize the real-time push function of situation and target intelligence, and also needs to support command and dispatch functions. The characteristics of Beidou short message communication are low-frequency burst and fixed maximum data packet length. To realize the real-time push of large amounts of data, Beidou message communication must be effectively used to maximize channel utilization.

[0205] Design countermeasures: First, change the encoding method of the communication content. Under the premise of ensuring the accuracy of use, convert floating point numbers and fixed strings into integers and index numbers through the numerical hashing method. At the same time, break the byte limit of commonly used data encoding, use bit as the minimum valid data unit for encoding, and make full use of data space, such as Fig.10 shown.

[0206] Secondly, using the characteristics of situation and target broadcast, the difference method is used to describe and reduce the space occupied by the basic data value, such as Fig.11 shown.

[0207] Taking advantage of the Beidou communication characteristics, multiple data contents can be inserted into a short message for framing. When sending short messages to the same address, multiple logical data information can be transmitted, effectively using the Beidou maximum message communication length.

[0208] An application embodiment of the present invention provides a computer device, which includes a memory and a processor. The memory stores a computer program. When the computer program is executed by the processor, the processor executes the steps of a Beidou-based maritime survival, situation generation and command and dispatch system operation method.

[0209] The application embodiment of the present invention provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the processor executes the steps of a Beidou-based maritime survival, situation generation and command and dispatch system operation method.

[0210] The application embodiment of the present invention provides an information data processing terminal, which is used to implement a Beidou-based marine survival, situation generation and command and dispatch system.

[0211] After people fall into the water in distress, the longer they drift at sea, the more dangerous they are. The present invention starts from the practical needs of rapid perception of distress, generation of search and rescue situation, and joint command and dispatch in maritime search and rescue, and focuses on seamlessly integrating the communication and positioning capabilities of BeiDou-3 into the current distress and rescue system. From the aspects of distress and survival signal sending, distress and survival information access perception, joint search and rescue situation generation, and auxiliary guidance of search and rescue forces, the joint search and rescue information system based on BeiDou-3 is optimized and designed throughout the whole process, and a BeiDou-based maritime survival, situation generation, and command and dispatch integrated system with integrated hardware and software is constructed, which is of great significance to ensure the efficient completion of maritime joint search and rescue tasks and improve the survival rate of people who fall into the water.

[0212] (1) Open up the end-to-end link of "Beidou Network" + "various telephone duty platforms", realize cross-domain connection of satellite and ground networks, and seamless routing application mode, support the two-way flow of distress notification information and rescue business information, expand the respective use boundaries of satellite and ground information systems, and thus form "wide" in airspace, "fast" in time domain, and "connected" in architecture, breaking through the limitation that traditional Beidou short messages need to be equipped with Beidou dedicated receiving equipment, breaking the traditional idea of ​​"building chimneys" at the end, relying on various sound telephone duty platforms, without the need for additional manpower, enhancing the rapid response of distress signals and the ability to coordinate forces.

[0213] (2) Joint search and rescue at sea usually occurs suddenly. In order to improve the efficiency of search and rescue, it is often necessary to mobilize all relevant forces to participate in the rescue operation. Since the communication, positioning equipment and usage methods of the mobilized forces temporarily participating in the formation are different, it is difficult to form a unified situation and command and dispatch link. The present invention integrates various Beidou communication positioning signals, operates on the search and rescue mission map, integrates the generation of search and rescue situation, and integrates the guidance of search and rescue forces. Relying on the Beidou communication link, the present invention can quickly realize the interconnection and sharing of situation and dispatch information among the shore-based command post, the maritime group command post, and the search and rescue platform, and can adjust the command relationship at any time according to the mission requirements. It can quickly build an efficient command and dispatch means based on the Beidou link for joint search and rescue operations at sea.

[0214] (3) In the event of a large number of people falling into the water, through the intelligent integration of AIS and other information, it is possible to realize the application mode of one Beidou terminal with multiple AIS terminals as remote alarm survival terminals, greatly reducing the application cost of Beidou in large-scale survival of people at sea and expanding the coverage of survival terminals.

[0215] (4) In response to the situation where a few people fall into the water, the present invention designs a miniaturized dedicated Beidou survival terminal, which is adapted to different application scenarios in terms of ease of use and reliability, and utilizes the advantages of Beidou-3 regional and global messages to provide an effective means for Beidou maritime survival applications.

[0216] It should be noted that the embodiments of the present invention can be implemented by hardware, software, or a combination of software and hardware. The hardware part can be implemented using dedicated logic; the software part can be stored in a memory and executed by an appropriate instruction execution system, such as a microprocessor or dedicated design hardware. It can be understood by a person of ordinary skill in the art that the above-mentioned devices and methods can be implemented using computer executable instructions and / or contained in a processor control code, such as a carrier medium such as a disk, CD or DVD-ROM, a programmable memory such as a read-only memory (firmware), or a data carrier such as an optical or electronic signal carrier. Such code is provided on the carrier medium. The device and its modules of the present invention can be implemented by hardware circuits such as very large-scale integrated circuits or gate arrays, semiconductors such as logic chips, transistors, etc., or programmable hardware devices such as field programmable gate arrays, programmable logic devices, etc., can also be implemented by software executed by various types of processors, and can also be implemented by a combination of the above-mentioned hardware circuits and software, such as firmware.

[0217] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. A Beidou-based marine survival, situation generation and command and dispatch system, characterized in that: include: The information service layer is equipped with Beidou situation dispatch and telephone voice service subsystems, including base-level service terminals and group-level service terminals; Dispatching terminal layer, including ship-used remote-controlled Beidou position indicating terminal, Beidou / AIS dual-mode forwarding beacon, various general handheld Beidou short message terminals and various special Beidou short message terminals; The survival terminal layer includes remote-controlled BeiDou-3 personal position-indicating beacon, BeiDou / AIS dual-mode repeater beacon dedicated survival terminal, compatible AIS drowning position-indicating beacon, emergency radio position-indicating beacon, and supports various types of general BeiDou short message terminals, which are used for people in distress at sea to remotely report distress information and receive feedback information pushed by base-level and group-level service terminals; The Beidou situation dispatch and telephone voice service subsystem aggregates and processes situation information from different channels and different types of terminals, responds to and processes Beidou short message distress signals, connects the Beidou network with the telephone duty network, and pushes Beidou to share Beidou situation and command dispatch information; The Beidou situation dispatch and telephone voice service subsystem is mainly composed of two levels: base-level service terminals and group-level service terminals. It can integrate the situation and distress information pushed by Beidou RDSS links, AIS channels, networks and other channels, is compatible with multiple Beidou communication protocols, supports the access of various Beidou short message terminals of Beidou-2 and Beidou-3, and realizes the reception of distress information and location information in different formats sent by multiple terminals. It can also expand the supported communication protocols as needed, and realize the interconnection between Beidou network and telephone network; it can use the point-to-point communication, broadcast communication and multicast communication provided by Beidou short message communication service to realize the networking function between system search and rescue terminals and improve data transmission efficiency; it can combine the chart drawing system and visualization software development technology to realize visualization situation generation, multi-level sharing and command and dispatch functions; The dispatch terminal layer includes ship-mounted remote-controlled Beidou positioning terminals and handheld Beidou terminals. It supports multiple types of Beidou short message terminals equipped on various ships and aircraft platforms. It can report the location of assigned search and rescue forces and receive situation and dispatch information pushed by base-level and group-level service terminals.

2. The Beidou-based marine survival, situation generation and command and dispatch system as claimed in claim 1, characterized in that: The Beidou situation dispatch and telephone voice service subsystem has the Beidou-2 and Beidou-3 short message communication functions, receives and processes standard position reports, extended position reports and distress messages reported by various Beidou terminals, and integrates other AIS system signals to form a comprehensive situation; it can use the Beidou RDSS link for system self-organizing networking, and realize four-level situation sharing and target push functions including base command level, group command level, search and rescue dispatch terminal, and Beidou survival terminal, and can provide support for the implementation of search and rescue operations from mission establishment, plan mapping, water fall calculation, and target distribution.

3. The Beidou-based marine survival, situation generation and command and dispatch system as claimed in claim 1, characterized in that: The Beidou situation dispatch and telephone voice service subsystem consists of two levels: base command-level service terminals and group command-level service terminals. The base command-level service terminals are set up in the shore-based command post, and the group command-level service terminals are set up in the maritime search and rescue group command post. The service end can be dynamically networked to form an expandable networking structure. The network topology structure supports flexible adjustment, supports the base command-level service terminal and the group command-level service terminal to work independently, and the base command-level service terminal and the group command-level service terminal work in joint mode. Multiple base commands and group commands work in parallel to realize the orderly transmission of distress information, situation information, and free text and electronic information.

4. The Beidou-based marine survival, situation generation and command and dispatch system as claimed in claim 1, characterized in that: The basic command-level service terminal is based on a high-performance server, equipped with a variety of serial ports and Ethernet communication interfaces, Beidou-2 and Beidou-3 command terminals, telephone voice call service equipment, and can expand Beidou terminals, satellite communication terminals and AIS receiving equipment as needed; the basic command-level service software of the Beidou situation dispatch and telephone voice service subsystem supports multi-client remote access and operation through the network, and has the ability to manage in different levels according to user roles; network access users can create and execute different search and rescue tasks according to the granted permissions, and realize group management, identity identification, situation collection, task issuance, target push, and situation push. The highest authority data management within the group, and system administrator role users are responsible for managing and maintaining the basic operating data of the system.

5. The Beidou-based marine survival, situation generation and command and dispatch system as claimed in claim 1, characterized in that: The basic service terminal software adopts C / S architecture. The server software runs on the server equipped with the basic service terminal. The client software can run on the server or be installed on other laptops. It connects to the server through the network to realize the software operation function. The basic command-level service terminal software mainly includes terminal management, task management, communication, situation management, dispatch management, plotting, nautical charts, telephone voice services, views, and system settings. The above functions can be managed graphically through the client software.

6. The Beidou-based marine survival, situation generation and command and dispatch system as claimed in claim 1, characterized in that: The main interface of the client software is initially divided into five areas: menu bar, left window, chart window, right window, status bar; the left window and right window can be folded or expanded through the fold button in the middle; full screen display can be achieved through the full screen button in the lower right corner of the status bar. The left window displays the force information of the opened mission, the layers and plotting list of the opened mission plotting scheme, and the current perception terminal list; the perception terminal list can be filtered by online status and classified based on type; The right window displays system messages and free text and telecommunication records, which can be filtered by time and interacting party, and controlled to be displayed in interactive list or conversation format; the chart window displays the chart base map, as well as mission plotting plan information, situation plotting and target plotting; distance calculations and mission plotting plan compilation can be performed on the chart, and the status bar indicates the connection status, situation push status, longitude and latitude information of the mouse, number of distress terminals, number of unread communication messages, number of current channels, and number of communication messages to be sent.

7. An operating method for implementing the Beidou-based marine survival, situation generation and command and dispatch system as claimed in any one of claims 1 to 6, characterized in that: include: Step 1: Equip personnel with life-saving beacons: Equip offshore personnel with life-saving beacons, distribute universal Beidou boxes or Beidou handheld devices to simulate people falling into the water using universal Beidou short message terminals; offshore personnel can also be equipped with special terminals, such as remote-controlled Beidou-3 personal beacons for important personnel, and for general personnel with a large number of people, they are equipped with Beidou / AIS forwarding beacons and AIS overboard beacons in groups of 10. The team leader is equipped with Beidou / AIS forwarding beacons, and the team members are equipped with AIS overboard beacons; Step 2: The search and rescue platform is equipped with a Beidou search and rescue dispatch terminal: Aircraft and ships participating in the search and rescue operation should be equipped with a Beidou search and rescue dispatch terminal. For ships participating in the search and rescue operation, a ship-use remote control Beidou position indicating terminal can be installed; If the ships involved in the search and rescue operation are equipped with Beidou short message terminals, they do not need to be installed, and use their own Beidou short message terminals to send standard Beidou position reports to the base-level service terminal at a frequency of 3 to 5 minutes; the work boats carried by large search and rescue platforms are equipped with handheld Beidou terminals installed with search and rescue dispatch terminal software to facilitate maritime situation sharing and automatic dispatch guidance; Step 3: Set up base command-level and group command-level service terminals: The shore-based command post and the maritime group command post install base command-level service terminals and group command-level service terminals. The shore-based command post must provide at least one telephone line for the base command-level service terminal. The selection of the Beidou antenna installation location requires that the antenna has good sky reception without obstruction, and the client running software can access the command post video projection screen; Step 4: Beidou survival signal response: If the drowning personnel use the general Beidou short message terminal, they can use the pre-set communication code to send Beidou distress information and open a 5-minute frequency position report to the base-level service terminal; after receiving the survival message, the base-level service terminal automatically highlights and flashes on the situation map to remind, and at the same time dials the set search and rescue platform duty phone for voice aggregation broadcast, completing the Beidou distress information entering the command link; after receiving the distress call, the duty officer replies to the rescue object through the telephone button, and presses the level Report, the command post starts to organize the rescue operation; the person who falls into the water will automatically send an extended position report and survival information to the base level using the remote-controlled BeiDou-3 personal position indicator beacon. The BeiDou / AIS forwarding position indicator and AIS drowning position indicator will also be automatically turned on after falling into the water. The BeiDou / AIS forwarding position indicator will automatically receive the AIS drowning signal within 2 to 3 nautical miles nearby, and forward it to the base level service terminal through the BeiDou short message. After receiving various survival information, the base level service terminal will automatically integrate and dynamically update the plot on the nautical chart; Step 5: Organize search and rescue forces and conduct search and rescue operations: After the command post analyzes the distress information, it organizes the search and rescue forces, clarifies the command relationship, and each search and rescue platform starts position reporting; the base command level, group command level, and each search and rescue platform share the situation and conduct command and dispatch through the Beidou link, and distribute and push target information to each platform; Step 6: Verify the water fall: After the search and rescue forces are organized, the command post dispatches an aircraft to conduct video verification; Step 7: Rescue: After the rescue force reaches the sea area where the person fell into the water, a lifeboat will be used to carry out rescue operations; Step 8. Search and rescue statistics for people who fall into the water: After the people are rescued, the search and rescue platform uses the Beidou search and rescue dispatch terminal to report the names of the rescued people and basic information of their units, and the basic command-level and group command-level service terminals carry out statistics on the search and rescue progress.

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