Intercom broadcasting and jamming system based on unmanned aerial vehicle mounting

Abstract

The application discloses a kind of based on the intercom broadcast and interference system of unmanned plane mounting, it is related to unmanned plane technical field.The system includes: antenna, for receiving and transmitting radio frequency signal;Multiple host function modules, for realizing the voice broadcast and interference suppression function of intercom;Shell, mounted on unmanned plane, antenna is fixed to the inner wall of shell by antenna fixing frame, multiple host function modules are fixed to the inner wall of shell by equipment support, so that host function module and antenna are attached to shell to form the heat dissipation air duct from the front to the tail of shell.The application realizes that unmanned plane mounts intercom, and the intercom in the ground target area is surveyed, interfered, suppressed and broadcasted.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) technology, and more specifically to a walkie-talkie broadcasting and jamming system mounted on a UAV. Background Technology

[0002] Walkie-talkies have a wide range of applications, including border patrol, transportation, railways, civil aviation, manufacturing, construction, services, security, and many other industries. They are used for communication and command and dispatch among group members, improving communication efficiency and the ability to respond quickly to various incidents. Walkie-talkie communication is simple and efficient, and can be used for group communication in various ways, such as point-to-point, network, and trunking. Conventional walkie-talkies primarily use point-to-point communication. Therefore, besides mobile communication, walkie-talkies are one of the most widely used communication methods in the field of wireless communication.

[0003] Due to the importance of walkie-talkies, communication countermeasures equipment targeting walkie-talkies is of great value, both in military and civilian applications, and there are many types of such equipment. In terms of technical applications, they mainly fall into three categories: first, reconnaissance technology, including spectrum reconnaissance and signal identification, direction finding, and information interception and monitoring of walkie-talkie signals, to achieve the purpose of obtaining target information and detecting target location; second, jamming and suppression technology, mainly including blocking jamming and specific target signal jamming, to achieve the purpose of disrupting target communication; and third, information delivery technology, including regional broadcast information delivery and specific target information delivery, to achieve the purpose of sending voice messages to the target. Conventional walkie-talkie processing equipment mainly targets the individual or combined application of these three types of technologies.

[0004] Two-way radio technology has been developing for decades, and the techniques for reconnaissance, jamming, and information transmission targeting two-way radios are relatively mature, with numerous related equipment applications both domestically and internationally. However, existing equipment is primarily ground-based, including vehicle-mounted, fixed, and portable systems. Ground-based equipment applications have significant drawbacks because the propagation of radio signals in the two-way radio operating frequency bands (VHF and UHF) is highly susceptible to environmental factors such as terrain and building obstructions. Furthermore, radio electromagnetic waves attenuate rapidly due to the double-line transmission on the ground. Therefore, even under line-of-sight conditions, conventional ground equipment has a limited effective range, typically achieving reconnaissance and broadcasting distances within 5 kilometers, and jamming distances usually not exceeding 1 kilometer. This is especially true in urban environments, where numerous buildings significantly reduce the effective range, severely limiting its capabilities. Summary of the Invention

[0005] This invention addresses the problem that existing walkie-talkie devices are primarily ground-based and their wireless signal propagation is highly susceptible to environmental factors, leading to rapid signal attenuation. It provides a walkie-talkie broadcasting and jamming system based on UAVs, enabling UAVs to carry walkie-talkies and to conduct reconnaissance, jamming, suppression, and broadcasting of walkie-talkies within ground target areas.

[0006] The present invention is achieved through the following technical solution.

[0007] This invention provides a walkie-talkie broadcasting and jamming system based on a drone, the system comprising:

[0008] Antennas are used to receive and transmit radio frequency signals;

[0009] Multiple host function modules are used to realize the voice broadcasting and interference suppression functions of the walkie-talkie;

[0010] The housing is mounted on a drone, the antenna is fixed to the inner wall of the housing by an antenna mounting bracket, and the multiple host functional modules are fixed to the inner wall of the housing by a device bracket, so that the host functional modules and the antenna fit against the housing to form a heat dissipation duct from the front to the rear of the housing.

[0011] In some embodiments, the antenna is located inside the housing on the side near the ground, and the antenna is arranged along the extending direction of the housing.

[0012] In some embodiments, an antenna radome is provided at the location where the antenna is mounted on the housing, and the antenna radome is provided with a wave-transparent window, wherein the wave-transparent window is made of a wave-transparent material.

[0013] In some embodiments, a strong ring beam is provided at the cross-section of the housing at the wave-transparent window, and an antenna radome mounting flange is provided at the edge of the wave-transparent window.

[0014] In some embodiments, a panel is provided on the side of the housing away from the ground, and the panel is provided with power supply and signal interfaces, wherein the power supply and signal interfaces are connected to the plurality of host functional modules respectively.

[0015] In some embodiments, the housing is provided with a hanging lug on the panel, and the housing is cylindrical.

[0016] In some embodiments, the housing is provided with heat sinks that are attached to its inner surface.

[0017] In some embodiments, the plurality of host functional modules include: a radio frequency transceiver component, a signal receiving module, a signal processing module, a power amplification component, and a comprehensive control module, wherein,

[0018] The radio frequency transceiver component is used to preprocess the received signal and perform radio frequency processing on the interference and broadcast signals to be transmitted.

[0019] The signal receiving module is used to sample and perform analog-to-digital conversion on the preprocessed signal of the radio frequency transceiver component to obtain a digital received signal;

[0020] The signal processing module is used to demodulate, decode, extract and analyze parameters of the digital received signal, and generate interference and broadcast signals.

[0021] Power amplifier components are used to amplify radio frequency interference and broadcast signals after radio frequency processing;

[0022] The integrated control module is used to monitor, manage and control the radio frequency transceiver component, the signal receiving module, the signal processing module and the power amplification component, and to receive commands about the working mode sent by the ground control terminal, wherein the working mode includes interference mode and voice broadcast mode.

[0023] In some embodiments, the voice broadcast mode operates based on the following:

[0024] The signal detection module statistically analyzes high-frequency and high-capacity walkie-talkie signals to identify group users and form a walkie-talkie user frequency feature database for the group users.

[0025] In the voice broadcast mode, targets in the feature library are automatically allocated, and voice broadcasts are performed on the target's working channel and adjacent channels.

[0026] In some embodiments, the signal processing module generates the interference and broadcast signals using a terrestrial propagation model, wherein the terrestrial propagation model is generated based on a free-space propagation model and modified using a terrestrial transmission attenuation factor.

[0027] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0028] 1) By leveraging the altitude advantage of UAV-borne platforms to cover ground target areas, the impact of terrain, buildings, and other environmental factors on electromagnetic wave radiation can be effectively reduced, and the attenuation of ground electromagnetic wave transmission can be significantly reduced. Compared with ground equipment, the coverage distance is increased by more than three times.

[0029] 2) Based on the application of UAV-based platforms, the high mobility of UAV-based platforms can be used to deploy equipment more quickly to mission areas that are difficult for ground equipment to reach, making it more suitable for disaster relief, emergency response and other mission needs;

[0030] 3) Intelligent equipment with autonomous and collaborative capabilities can more flexibly adapt to the development needs of future low-altitude economic development and unmanned platform applications. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a structural block diagram of a walkie-talkie broadcasting and jamming system based on an unmanned aerial vehicle (UAV) according to an embodiment of the present invention.

[0033] Figure 2 This is a schematic diagram illustrating the working principle of a system according to an embodiment of the present invention.

[0034] Figure 3 The system workflow according to an embodiment of the present invention.

[0035] Figure 4 The following describes the workflow of the voice playback processing module according to an embodiment of the present invention.

[0036] Figure 5 This is a timing diagram of a walkie-talkie detection jamming according to an embodiment of the present invention.

[0037] Figure 6 The above is a walkie-talkie signal attenuation curve 1 for different frequency bands under the air-to-ground model according to an embodiment of the present invention (for interference suppression).

[0038] Figure 7 2. Walkie-talkie signal attenuation curves for different frequency bands under an air-to-ground model according to an embodiment of the present invention (for reconnaissance and broadcasting).

[0039] Figure 8 The present invention relates to a system walkie-talkie signal processing software processing flow according to an embodiment of the present invention.

[0040] Figure 9 This is a block diagram for software thread design according to an embodiment of the present invention.

[0041] Figure 10 This is a software flowchart of a processing unit according to an embodiment of the present invention.

[0042] Figure 11 This is a functional composition diagram of airborne service software according to an embodiment of the present invention.

[0043] Figure 12This is a flowchart illustrating the information display function according to an embodiment of the present invention.

[0044] Figure 13 This is a system disassembly diagram according to an embodiment of the present invention. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0046] On the one hand, the present invention provides a walkie-talkie broadcasting and jamming system based on a drone. Figure 1 This is a structural block diagram of a walkie-talkie broadcasting and jamming system based on an unmanned aerial vehicle (UAV) according to an embodiment of the present invention.

[0047] refer to Figure 1 The system includes: an antenna, multiple main functional modules, and a housing. The antenna is used to receive and transmit radio frequency signals; the multiple main functional modules are used to realize the voice broadcasting and interference suppression functions of a walkie-talkie; the housing is mounted on the drone, the antenna is fixed to the inner wall of the housing by an antenna mounting bracket, and the multiple main functional modules are fixed to the inner wall of the housing by an equipment bracket, so that the main functional modules and the antenna fit against the housing to form a heat dissipation duct from the front to the rear of the housing.

[0048] The antenna can be an integrated transceiver antenna group, which can operate in three frequency bands: 30-100MHz, 100MHz~200MHz, and 200MHz~500MHz. The three frequency bands can operate independently in receive or transmit mode without interfering with each other.

[0049] Multiple host functional modules include: radio frequency transceiver components, signal receiving module, signal processing module, power amplification components, and integrated control module.

[0050] The radio frequency (RF) transceiver unit is used to preprocess received signals and perform RF processing on interference and broadcast signals to be transmitted. Specifically, the RF transceiver unit includes isolated receiving and transmitting channels. It primarily performs front-end preprocessing of the RF signals received from the antenna port, including low-noise amplification, filtering, and down-conversion. After preprocessing, the received signal enters the signal detection module for further processing. The transmitting channel mainly performs signal amplification, power adjustment, and up-conversion, outputting the interference and broadcast signals generated by the signal processing module to the power amplification unit after RF processing.

[0051] The signal detection module is used to sample and convert the pre-processed signal from the RF transceiver components into a digital signal. Specifically, the signal detection module mainly includes an AD (analog-to-digital converter) daughter card and peripheral circuitry, primarily sampling the received signal and converting the analog signal into a digital signal. The selected ADC chip is a dual-channel 14-bit analog-to-digital converter chip with a maximum sampling rate of 1000 MSPS.

[0052] The signal processing module is used to demodulate, decode, extract and analyze parameters of the received digital signals, and generate interference and broadcast signals. Specifically, the signal processing module mainly performs demodulation, decoding, parameter extraction and analysis of the received signals, as well as the generation of interference and broadcast signals. It mainly consists of an FPGA (Field-Programmable Gate Array), a COME (Computer Module Interconnect Standard) module, and a storage hard drive. The FPGA is connected to a PC (Personal Computer) via a gigabit network to receive commands and transmit data, and works with the COME to complete the overall control of the system.

[0053] The power amplifier component is used to amplify the interference and broadcast signals after radio frequency (RF) processing. Interference and broadcast signals generated by the signal processing module need to be amplified by the power amplifier. The power amplifier component integrates the entire operating frequency band. The entire power amplifier component consists of a transmitting unit, a control unit, a filter, and a structural unit. The transmitting unit amplifies the RF signal at high power; the three frequency bands are amplified by three independent transmitting units, and the link adopts a three-stage amplification architecture to ensure power output of over 60W. The control unit mainly implements the various power conversions required by the module, and the structural unit mainly implements the module's installation and heat dissipation requirements.

[0054] The integrated control module monitors, manages, and controls the RF transceiver components, signal reception module, signal processing module, and power amplification components, and receives commands from the ground control terminal regarding the operating mode. Operating modes include interference mode and voice broadcast mode. Specifically, the integrated control module monitors, manages, and controls each functional module of the system, receives commands from the ground control terminal, parses the commands, and then controls the wireless remote control module to transmit trigger signals. Additionally, the integrated control module receives the clock reference signal from the UAV platform, distributes the clock signal, and sends it to each functional module as a reference signal, thereby achieving timing control functions.

[0055] In some embodiments, the system further includes a power supply module for providing operating voltage to other modules of the system.

[0056] refer to Figure 2After receiving signals via the antenna, the RF transceiver module performs bandpass filtering, attenuation control, amplification, and low-pass filtering before sending the signals to the signal acquisition module for acquisition. The acquired signals are then down-converted by the built-in DDC (digital downconverter) of the AD (analog-to-digital converter) in the signal acquisition module and sent to the FPGA (Field-Programmable Gate Array) for signal detection, narrowband DDC, and signal demodulation. Finally, the signals are sent to the embedded motherboard in the signal processing module for signal analysis, interference handling, and forwarding. In the 30-100MHz frequency band, signals are directly acquired via RF sampling and processed by the FPGA. In the high-frequency band, signals are bandpass sampled and down-converted to zero intermediate frequency for processing. The system detects signals requiring processing across the entire frequency band and, based on pre-defined operating strategies and information such as the spectral situation and the number of targets obtained through reconnaissance, autonomously schedules various functional modules to generate signals, perform power suppression, or broadcast voice messages.

[0057] refer to Figure 3 The system's main functions include voice broadcasting and jamming, each targeting different operational objectives. Before takeoff with the UAV, the system's operating modes can be preset via a ground-based testing terminal. Besides broadcasting and jamming modes, these preset modes also include target area location information, target size, and target threat level, serving as the basis for determining the device's autonomous operating mode. After takeoff with the UAV, the system enters a full-band operating mode, continuously monitoring and analyzing target signal information within the area, and continuously comparing it with a database to identify threat signal types and levels. When the system autonomously detects a triggered mission state, such as entering a target operational area, detecting high-threat targets, or the number of threat target groups reaching a threshold, it enters broadcasting or jamming mode according to the corresponding operational strategy. The control unit autonomously controls the time-division coordinating operation of each receiver, digital signal source, and transmitter, and records the corresponding operational logs for review and evaluation of operational effectiveness after the mission. Due to the difficulty in guaranteeing high-speed transmission reliability of UAV data links, after the system enters operational status with the UAV, it primarily performs autonomous decision-making and mission execution. When operational needs arise, the rear only needs to switch the system's operating modes via simple commands.

[0058] Voice broadcast mode transmits specific, retrievable signals to target walkie-talkies at different operating frequencies using a frequency sweeping method. The modulated information in voice broadcast mode is the voice content. The dwell time at each swept frequency point in voice broadcast mode depends on the length of the broadcast content. A more important operating mode of voice broadcast mode is group target broadcasting based on statistical analysis of intercepted data. The system, through a signal reconnaissance module, can statistically analyze high-frequency and high-capacity walkie-talkie signals to identify groups of users such as industrial parks, shopping malls, public transportation, and schools, forming a frequency characteristic database of these users. In voice broadcast mode, the system automatically allocates targets within the characteristic database to broadcast voice messages on their operating channels and adjacent channels, ensuring maximum coverage of the largest possible audience.

[0059] refer to Figure 4 The voice broadcasting function is mainly implemented through the voice playback module of the client. Its main function is to perform analog demodulation of signals such as AM (amplitude modulation), FM (frequency modulation), USB (upper sideband), and LSB (lower sideband), and after determining that there is an audio signal, it performs audio filtering to improve the voice quality. Users can adjust and control the playback volume and send the demodulated audio to the client for voice playback.

[0060] The reconnaissance processing of the signal reception module mainly includes demodulation, decoding, and database comparison. Its processing speed is primarily limited by the bandwidth of the hardware reconnaissance channel and the chip's processing power, taking approximately 100µs. However, due to the time delay in the spatial transmission of radio electromagnetic signals, this delay effect becomes more pronounced over long distances. The maximum interference and broadcasting distance designed for the target is 15km, with a signal transmission delay of approximately 50µs. The reconnaissance distance must be greater than this value. Taking a maximum reconnaissance distance of 20km as the design basis, the signal propagation delay at this distance is 20km / the speed of light, approximately 67µs. The total time for signal transmission delay and signal processing is 167µs, meaning the maximum allowable interference time is 167µs; otherwise, there will not be enough time to process the reconnaissance information for the next cycle. In summary, the theoretically allowable interference time window is <167µs, and the interference duration should be as long as possible under this condition to ensure the interference effect; while the minimum reconnaissance processing time should be >100µs, and the time window should be as short as possible under this condition. Taking into account the design margin for signal reconnaissance and processing delays, as well as the reconnaissance time protection interval, and after multiple practical tests and optimizations, the system adopts a reconnaissance time and interference time of 150µs. The reference operating timing is as follows: Figure 5 As shown.

[0061] The signal processing module uses a terrestrial propagation model to generate interference and broadcast signals. This terrestrial propagation model is based on a free-space propagation model and modified using a terrestrial transmission attenuation factor. Specifically, for air-to-ground coverage scenarios, line-of-sight signal transmission is the primary consideration. Based on the free-space propagation model, a certain terrestrial transmission attenuation factor needs to be taken into account. This attenuation factor can be introduced and modified to correct the free-space model through actual measurements using a prototype with a reduced height. Figure 6 The above is a walkie-talkie signal attenuation curve 1 for different frequency bands under the air-to-ground model according to an embodiment of the present invention (for interference suppression). Figure 7 Figure 2 shows the attenuation curves of walkie-talkie signals at different frequency bands (for reconnaissance and broadcasting) under an air-to-ground model according to an embodiment of the present invention. Simulation results show that the UAV-mounted pod can broadcast to ground-based walkie-talkies at a distance exceeding 15 km, and interfere at a distance exceeding 7 km. Compared to ground-based walkie-talkie broadcasting / jamming equipment, under the same equivalent radiated power (EIRP, equivalent isotropic radiation) conditions, this effective distance can be increased by more than two times.

[0062] The following describes the working principle of the system from a software perspective. By embedding the corresponding processing software into multiple host functional modules, a walkie-talkie function can be implemented, used for wide and narrowband DDC processing after signal acquisition, wideband signal spectrum calculation, signal detection and identification, signal generation, etc. (Reference) Figure 8 The signal acquired through the radio frequency channel is sequentially sampled by AD, wideband DDC, narrowband DDC, timestamp added and data encapsulated, and then transmitted to a designated module for signal detection and demodulation. The narrowband data is then stored, and the generated signal is transmitted through the radio frequency channel after passing through DA (digital-to-analog conversion).

[0063] refer to Figure 9 In terms of thread control, the main thread is responsible for the initialization of various modules, including device, control, and network initialization. It also listens for events (such as whether network data has arrived) through epoll event-driven monitoring. If the main thread receives a command to enable broadband spectrum, it notifies the broadband spectrum thread. Upon receiving the notification, the broadband spectrum thread starts the corresponding channel's DMA (Direct Memory Access) single-pass mode. The user layer copies and reads the broadband spectrum data, performs sideband removal and other processing, and then sends it to the CPU (Central Processing Unit) through a high-speed interface. The DMA loop is then restarted and the above operations are repeated.

[0064] refer to Figure 10In the processing unit, if the main thread receives a command to enable wideband DDC, it notifies the wideband DDC thread. Upon receiving the notification, this thread enables the corresponding channel's continuous DMA mode. Since the wideband DDC data does not require processing, it can be sent to the CPU via zero-copy technology, through inter-kernel copying. That is, after initiating DMA once, wideband DDC data is continuously read and sent. To conserve hardware resources, each wideband DDC channel is stored in a DMA buffer, and the CPU needs to parse the corresponding data header to process each channel's data.

[0065] The signal reception module management system obtains the status information of the signal reception module by issuing control and status query commands, and transmits the command execution results to the host computer software via UDP (User Datagram) protocol. Similarly, the signal processing module management system obtains the status information of the signal processing module by issuing control and status query commands, and transmits the command execution results to the host computer software via UDP protocol. The power amplifier management system obtains the power amplifier status information by issuing power control and power amplifier status query commands, and transmits the command execution results to the host computer software via UDP protocol. After system power-on, the software performs self-tests on the signal reception module, signal processing module, integrated control module, and power amplifier module, checking the network interface and UART interface driver connection status of the modules and the fault status of the modules themselves. When a fault occurs, an alarm message is sent to the host computer. After software startup, the interfaces of each module are initialized. After initialization, the system operates normally. A watchdog timer monitors the system's operating status and takes appropriate measures when the system experiences abnormalities or faults to prevent system failures or crashes.

[0066] refer to Figure 11The airborne service software is primarily used for system business processing, control commands, and transparent transmission of business data. Installed and deployed within the integrated control module, it receives data or command acknowledgments sent to the ground-based remote control software. It encapsulates the received data using the UAV's downlink interface, and the encapsulated data is then transmitted to the UAV via RS-422 serial port. The UAV platform then transmits the data to the ground control software via wireless links using TCP (Transmission Control Protocol) / UDP / serial communication methods. It can also be used for emergency management communication services, enabling IMS (IP Multimedia Subsystem) multimedia services. The airborne service software mainly consists of a data communication module, a data processing module, and an emergency communication management module.

[0067] refer to Figure 12 The remote control software serves as the primary human-machine interface for the entire client-side operating software and is the host program for all basic and business function modules. It is used to implement information display, data analysis, parameter configuration, and status alarms. Information display is its core function, providing ground control personnel with a basis for decision-making through an intuitive interface displaying situations, parameters, and statuses.

[0068] refer to Figure 13 The shell is cylindrical to ensure overall aerodynamics meets the flight requirements of the UAV. Based on the mission payload's power consumption, weight, and dimensions, and considering the overall weight and center of gravity requirements, the internal functional modules are evenly distributed to avoid affecting the UAV's flight performance. Due to the overall external ductless design, system cooling relies on external airflow cooling of the shell material during flight. The inner surface of the shell has heat dissipation fins that fit tightly against the shell, facilitating heat exchange between the internal space and the shell itself. Furthermore, the internal modules are tightly fitted to the shell, and a cooling airflow channel is designed from the front to the rear of the shell, ensuring consistent airflow direction and accelerating heat exchange between the internal components and the external environment. Simultaneously, high-heat-consuming modules need to be evenly distributed to avoid heat concentration.

[0069] The antenna is located on the ground-facing side inside the housing and is positioned along the housing's extension direction. An radome is installed at the antenna mounting point on the housing. Based on the mission payload's operating frequency band, a wave-transparent window (the size of which can be increased or decreased according to actual needs) is provided in the radome. This window is made of a wave-transparent material and reinforced to ensure both secure mounting and the antenna's radiation at the bottom. The window area needs to adequately ensure effective antenna radiation while minimizing the impact on the overall structural strength. Furthermore, two reinforcing ring beams are added to the housing cross-section within the window area, and a radome mounting flange is added around the window edge to ensure the housing's strength is not affected by the window and to guarantee its vibration and impact resistance. Fiberglass composite material is selected as the wave-transparent material to ensure both wave transmission and the structural strength of the radome.

[0070] A panel is located on the side of the shell furthest from the ground. This panel includes power and signal interfaces, which connect to various main unit functional modules. The shell also features mounting ears on the panel. These mounting ears and interfaces require adaptive design for different drone platforms.

[0071] This invention provides a system adapted for UAVs to carry walkie-talkies, integrating reconnaissance, jamming, and broadcasting functions. It enables the reconnaissance, jamming, suppression, and broadcasting of voice messages to walkie-talkies within a ground target area, achieving the following technical effects.

[0072] 1) By leveraging the height advantage of the drone platform to cover ground target areas, the impact of terrain, buildings, and other environmental factors on electromagnetic wave radiation can be effectively reduced, and the attenuation of electromagnetic wave conduction on the ground can be significantly reduced. Compared with ground equipment, the coverage distance is increased by more than three times.

[0073] 2) Applications based on UAV platforms can leverage the high mobility of UAV platforms to deploy the system more quickly to mission areas that are difficult for ground systems to reach, making it more suitable for disaster relief, emergency response and other mission needs.

[0074] 3) Intelligent equipment with autonomous and collaborative capabilities can more flexibly adapt to the development needs of future low-altitude economic development and unmanned platform applications.

[0075] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A walkie-talkie broadcasting and jamming system based on a drone, characterized in that, The system includes: Antennas are used to receive and transmit radio frequency signals; Multiple host function modules are used to realize the voice broadcasting and interference suppression functions of the walkie-talkie; The housing is mounted on a drone, the antenna is fixed to the inner wall of the housing by an antenna mounting bracket, and the multiple host functional modules are fixed to the inner wall of the housing by a device bracket, so that the host functional modules and the antenna fit against the housing to form a heat dissipation duct from the front to the rear of the housing.

2. The system according to claim 1, characterized in that, The antenna is located inside the housing on the side closest to the ground, and the antenna is arranged along the extending direction of the housing.

3. The system according to claim 2, characterized in that, An antenna cover is provided on the housing at the location where the antenna is mounted. The antenna cover has a wave-transparent window, which is made of a wave-transparent material.

4. The system according to claim 3, characterized in that, At the wave-transparent window, a strong ring beam is provided at the cross-section of the housing, and an antenna radome mounting flange is provided at the edge of the wave-transparent window.

5. The system according to any one of claims 1 to 4, characterized in that, A panel is provided on the side of the housing away from the ground. The panel is provided with power supply and signal interfaces, which are connected to the plurality of host functional modules.

6. The system according to claim 5, characterized in that, The housing has a hanging lug on the panel, and the housing is cylindrical.

7. The system according to claim 1, characterized in that, The housing is equipped with heat sinks that are attached to its inner surface.

8. The system according to claim 1, characterized in that, The multiple host functional modules include: radio frequency transceiver components, signal reception modules, signal processing modules, power amplification components, and integrated control modules, wherein... The radio frequency transceiver component is used to preprocess the received signal and perform radio frequency processing on the interference and broadcast signals to be transmitted. The signal receiving module is used to sample and perform analog-to-digital conversion on the preprocessed signal of the radio frequency transceiver component to obtain a digital received signal; The signal processing module is used to demodulate, decode, extract and analyze parameters of the digital received signal, and generate interference and broadcast signals. Power amplifier components are used to amplify radio frequency interference and broadcast signals after radio frequency processing; The integrated control module is used to monitor, manage and control the radio frequency transceiver component, the signal receiving module, the signal processing module and the power amplification component, and to receive commands about the working mode sent by the ground control terminal, wherein the working mode includes interference mode and voice broadcast mode.

9. The system according to claim 8, characterized in that, The voice broadcast mode operates based on the following method: The signal detection module statistically analyzes high-frequency and high-capacity walkie-talkie signals to identify group users and form a walkie-talkie user frequency feature database for the group users. In the voice broadcast mode, targets in the feature library are automatically allocated, and voice broadcasts are performed on the target's working channel and adjacent channels.

10. The system according to claim 8, characterized in that, The signal processing module generates the interference and broadcast signals using a terrestrial propagation model, wherein the terrestrial propagation model is generated based on a free-space propagation model and modified using a terrestrial transmission attenuation factor.

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