An unmanned aerial vehicle satellite communication measurement and control link signal acquisition and analysis device

Abstract

The application discloses a kind of unmanned vehicle satellite communication control link signal collection analysis device, belong to satellite communication technical field;It includes satellite communication link detection equipment and control computer, satellite communication link detection equipment at least includes main control unit, remote control signal processing unit and telemetry signal processing unit, and there is integrated processing software on control computer.The application realizes signal collection analysis by three layers of information interaction logic: in monitoring management process, integrated processing software issues parameter setting frame, main control unit controls signal processing unit to load waveform after analysis and sets parameter, and collects state report display.The application has the advantages of generalization, high degree of integration, convenient operation, supporting anti-interference verification and security analysis etc..

Description

Technical Field

[0001] This invention relates to the field of satellite communication technology, specifically to a device for acquiring and analyzing signals from a UAV satellite communication telemetry and control link. Background Technology

[0002] In recent years, unmanned equipment has experienced tremendous development in China. The anti-interception and anti-hacking capabilities of satellite communication and telemetry links have become a key factor determining whether UAVs can be used beyond visual line of sight. The operating parameters of satellite communication waveforms vary significantly among different types of UAVs, necessitating the configuration of multiple signal acquisition devices to meet the signal acquisition needs of various UAV types. This increase in equipment introduces new challenges, such as limited transport space, power consumption constraints, and a significant increase in cost. Therefore, designing and implementing a highly reliable, universal, highly integrated UAV satellite communication and telemetry link signal acquisition and analysis device that meets multiple detection standards has become an urgent need for users. Summary of the Invention

[0003] This invention provides a UAV satellite communication telemetry and control link signal acquisition and analysis device, which has the ability to acquire and analyze signals from various types of current UAVs, and also has the function of analog data transmission. It is particularly suitable for application scenarios that emphasize portability and high integration.

[0004] Compared with the prior art, the objective of this invention is achieved as follows: A UAV satellite communication telemetry and control link signal acquisition and analysis device includes a satellite communication link detection device and a control computer. The satellite communication link detection device includes a main control unit, a remote control signal processing unit, and a telemetry signal processing unit. The control computer runs integrated processing software. The monitoring and management process is as follows: The integrated processing software generates a parameter setting frame based on the input and sends the parameter setting frame to the main control unit. The main control unit receives and parses the parameter setting frame, generates a waveform loading instruction and a working parameter configuration instruction based on the parsing result, and sends them to the remote control signal processing unit and the telemetry signal processing unit, respectively. The remote control signal processing unit and the telemetry signal processing unit load the corresponding baseband processing waveform from their local memory according to the corresponding waveform loading instruction, and set their own working parameters according to the corresponding working parameter configuration instruction. The remote control signal processing unit and the telemetry signal processing unit collect their own working status information and report it to the main control unit; the main control unit collects the working status information reported by the remote control signal processing unit and the telemetry signal processing unit, encapsulates it into a status reporting frame and sends it to the integrated processing software; the integrated processing software receives the status reporting frame and displays it visually.

[0005] Further, the task transmission process is as follows: The integrated processing software provides a data transmission editing interface, supporting the generation of transmission data packets using a user-defined method or data replay method, and sends the transmission data packets to the main control unit; the main control unit receives the transmission data packets, parses the type information in them to determine whether the transmission should be performed by the remote control signal processing unit or the telemetry signal processing unit, performs format conversion on the transmission data packets and sends them to the corresponding signal processing unit, and performs flow control during the transmission process; the remote control signal processing unit or the telemetry signal processing unit receives the data packets sent by the main control unit, performs encoding, modulation, and digital-to-analog conversion processing in sequence, and sends them out through the intermediate frequency interface; Task reception process: The remote control signal processing unit and the telemetry signal processing unit sequentially perform analog-to-digital conversion, demodulation, and decoding on the received satellite communication air interface signal, generate received data packets, and report them to the main control unit; the main control unit receives the received data packets, performs buffering and encapsulation processing, and sends them to the integrated processing software, while performing flow control during the reception process; the integrated processing software receives the received data packets forwarded by the main control unit, stores them on the computer hard drive and establishes an index, provides data retrieval functions, displays the retrieved data in a visual interface, and performs encryption strength analysis on the data. The analysis results are used to determine the security of the satellite communication link.

[0006] Furthermore, the parameter setting frame includes the working waveform type, modulation and demodulation method, transmit / receive rate, and transmit / receive frequency.

[0007] Furthermore, it also includes a clock unit, a power supply unit, and a high-speed motherboard module; The power supply unit receives external power and provides operating voltage to the main control unit, clock unit, remote control signal processing unit and telemetry signal processing unit through the high-speed motherboard module; The clock unit provides a reference clock to the remote control signal processing unit and the telemetry signal processing unit through the high-speed motherboard module.

[0008] Furthermore, the main control unit monitors the operating temperature of the satellite communication link detection device, the operating voltage and current of the power supply unit, and the operating status of the clock unit in real time; and encapsulates the monitored information into the status reporting frame and sends it to the integrated processing software for display.

[0009] Furthermore, the integrated processing software supports the following customizable methods: adjusting the frame length of the transmitted data frame, modifying the verification information in the data frame, and tampering with the time bit information in the data frame.

[0010] Furthermore, the remote control signal processing unit and the telemetry signal processing unit are each equipped with a large-capacity Flash memory for storing multiple sets of baseband processing waveform files; The main control unit controls the remote control signal processing unit or telemetry signal processing unit to load the corresponding waveform file from the Flash memory according to the working waveform type issued by the integrated processing software. The waveform file includes CDMA waveforms and FDMA waveforms. The remote control signal processing unit and the telemetry signal processing unit adopt a standard interface protocol and can be expanded to adapt to other models by replacing the boards.

[0011] Furthermore, the main control unit converts the data packets sent by the integrated processing software into an interface protocol format that is compatible with the remote control signal processing unit or the telemetry signal processing unit. The flow control performed by the main control unit includes: controlling the data packet transmission rate during transmission to ensure continuous processing by the signal processing unit; and controlling the data packet reporting rate during reception to ensure complete reception by the integrated processing software.

[0012] Compared with the prior art, the present invention has the following advantages: Compared with the prior art, the present invention patent has the following advantages: 1. The main control unit of this invention simultaneously undertakes the dual functions of monitoring and management as well as business processing. It performs flow control on both the sending and receiving paths, ensuring the integrity and continuity of data collected and analyzed over long periods by various types of UAVs. The integrated processing software supports custom editing of transmitted data frames (including adjusting frame length, modifying checksums, and altering time bits), which are then forwarded by the main control unit to the signal processing unit for transmission, enabling verification of the receiver's anti-interference capabilities. The integrated processing software performs encryption strength analysis on the received data, conforming to the requirements of GJB7158-2011 and GB / T 32915-2016. Furthermore, it allows users to select and set detection items (routine detection, run-length detection, repeat detection, etc.) according to their requirements, providing strong support for user judgment and effectively assessing the security of the UAV satellite communication link.

[0013] 2. This invention employs a standard RS485 control bus, using a main control unit to uniformly configure and manage the remote control signal processing unit and telemetry signal processing unit, enabling real-time monitoring of the equipment's operating status. It utilizes a high-speed motherboard module to transmit high-speed SGMII IP data and asynchronous monitoring data, achieving functional decomposition of the power supply unit, main control unit, clock unit, remote control signal processing unit, and telemetry signal processing unit, with each module forming a separate hardware unit. In different application scenarios, each module can load different waveform software, and the terminal can be configured to support different UAV waveforms, greatly improving the reusability of the hardware platform and achieving integration and universality. Externally, it provides a 10 / 100 / 1000 adaptive data network port compliant with the IEEE 802.3 standard and a standard intermediate frequency interface. Internally, it uses sockets compliant with VPX bus requirements to construct each module, resulting in a high degree of standardization. Attached Figure Description

[0014] Figure 1 This is a principle block diagram of an embodiment of the present invention. Detailed Implementation

[0015] The following is in conjunction with the appendix Figure 1 The present invention patent will be described in further detail below.

[0016] I. Overall Composition and Installation Structure Reference Figure 1 This embodiment of a UAV satellite communication telemetry and control link signal acquisition and analysis device consists of a satellite communication link detection device and a control computer. The satellite communication link detection device includes a power supply unit, a main control unit, a clock unit, a remote control signal processing unit, a telemetry signal processing unit, a high-speed motherboard module, and a portable chassis.

[0017] All the above units are 3U standard VPX boards, installed in a portable chassis. The entire unit adopts a portable structure, with dimensions of 300mm (width) × 100mm (height) × 250mm (depth) (excluding the front panel, handle, and electrical connectors). The chassis uses a fully enclosed aluminum plate assembly structure, consisting of a front panel, rear panel, cover plate, bottom plate, and circuit board mounting bracket. The chassis front panel is equipped with a power interface (aviation connector A), a switch interface (B), a comprehensive services aviation connector (C), a remote control intermediate frequency (IF) receiver interface (D), a remote control intermediate frequency (IF) transmitter interface (E), a telemetry intermediate frequency (IF) receiver interface (F), a telemetry intermediate frequency (IF) transmitter interface (G), a grounding post, and a fuse interface.

[0018] The connections between the various units are achieved through a high-speed motherboard module. The high-speed motherboard module provides control bus transmission, high-speed data interconnection, and abundant external interfaces between the modules. Specifically, the control bus uses an RS485 bus, and the data bus uses an SGMIIIP data bus and a 10 / 100 / 1000 Base-T IP data bus.

[0019] II. Connection Relationships Between Units Pin a of the power module is connected to the external AC220V power supply interface A via the high-speed motherboard module, with connector model YGD24N1203J; pin b is connected to the external power control pin B via the high-speed motherboard module, with connector model KN1A-202DM.

[0020] The main control unit's pin a is connected to the external integrated data interface C via a high-speed motherboard module. The connector model is JY27466T11B35PN, which is used to transmit and receive measurement and control signal data, monitoring data, etc.

[0021] Pin a of the remote control signal processing unit is connected to the external remote control data receiving interface D, with connector model SMA-KFK; pin g is connected to the external telemetry data transmitting interface E, with connector model SMA-KFK.

[0022] Pin a of the telemetry signal processing unit is connected to the external telemetry data receiving interface F, with a connector model of SMA-KFK; pin g is connected to the external telemetry data transmitting interface G, with a connector model of SMA-KFK.

[0023] The plug and socket connector models used by each unit board are as follows: power supply unit is DP2ATJE0832-000, main control unit is DP2A2JC0832-000, clock unit is VPX-21Z8aAD8-A, remote control signal processing unit is VPX-21T8aAD8-A, telemetry signal processing unit is VPX-21Z8aAA8-A, and high-speed motherboard module is VPX-21T8aAA8-A.

[0024] III. Power Supply Unit and Power Supply Relationship The power supply unit provides multiple voltages to other units through the high-speed motherboard module: pin C provides +12V power supply, pin D provides +5V power supply, and pin E provides +3.3V power supply, with a maximum power consumption of up to 200W.

[0025] IV. Clock Unit The clock unit provides a 100MHz reference clock to the remote control signal processing unit and the telemetry signal processing unit through the high-speed motherboard module.

[0026] V. Main Control Unit The main control unit adopts a 3U VPX architecture, and its core circuitry consists of a CPU, FPGA, switching module, and digital-to-digital conversion module. The software installed on the CPU of the main control unit has the following functions: Monitoring functions: Receive parameter setting frames sent by the integrated processing software, and control the clock accuracy of the clock unit after data parsing; control waveform loading and set operating parameters for the remote control signal processing unit and the telemetry signal processing unit; monitor the operating temperature of the satellite communication link detection equipment and the operating voltage and current of the power supply unit in real time; collect the operating status reported by the clock unit, remote control signal processing unit, and telemetry signal processing unit, encapsulate the status reporting frames, and send them to the integrated processing software for display.

[0027] Business processing functions: This function handles the format conversion and forwarding of telemetry and control data packets between the control computer and the remote control signal processing unit and telemetry signal processing unit. When performing a transmission task, the software on the main control unit receives data packets from the integrated processing software, converts their format, and sends them to the corresponding signal processing unit. Flow control is performed during transmission to ensure the continuity of signal processing. When performing a reception task, the software on the main control unit buffers data packets from the remote control signal processing unit and the telemetry signal processing unit, encapsulates them, and sends them to the integrated processing software. Flow control is also performed during this process to ensure data integrity during transmission.

[0028] The main control unit's pin d is connected to the power supply unit's pin f, the clock unit's pin a, the remote control signal processing unit's pin d, and the telemetry signal processing unit's pin d, respectively, to transmit RS485 control bus information. The transmission baud rate can be allocated as needed between 9.6k and 115.2kBaudps. The main control unit's pin e is connected to the remote control signal processing unit's pin f and the telemetry signal processing unit's pin f, respectively, to transmit measurement and control IP data.

[0029] VI. Remote control signal processing unit and telemetry signal processing unit The remote control signal processing unit and telemetry signal processing unit adopt a 3U VPX architecture, with core circuitry consisting of an SOC FPGA and AD / DA chips. Each unit is equipped with high-capacity Flash memory, capable of storing multiple target files (corresponding to different UAV waveforms). Under the control of the main control unit, baseband processing waveforms can be loaded on demand, supporting the processing of various waveforms such as CDMA and FDMA, adapting to multiple current UAV models. Employing a standard interface protocol, expansion and adaptation to other UAV models can be achieved by replacing boards.

[0030] During the transmission mission, the signal processing unit receives data packets sent by the main control unit, completes encoding, modulation, and D / A conversion, and transmits them through the intermediate frequency interface. During the reception mission, the signal processing unit performs A / D conversion, demodulation, and decoding on the received target UAV satellite communication air interface signal, converts it into data packets, and sends them to the main control unit.

[0031] VII. Control computer and integrated processing software The control computer is a portable machine equipped with integrated processing software. This software, developed based on Linux, features a visual interface and integrates monitoring, task sending, and task receiving functions.

[0032] Monitoring and processing functions include status monitoring, waveform selection, and parameter setting. Operating parameters include modulation / demodulation methods, transmit / receive rates, and transmit / receive frequencies. When starting data acquisition and analysis, the integrated processing software can load a pre-stored set of operating parameters, and also supports manual modification of one or more parameters by the operator. The main control unit's software adapts the format of the configuration parameters received from the integrated processing software and sends them to the clock unit, remote control signal processing unit, and telemetry signal processing unit.

[0033] Transmission task processing function: This mainly involves editing the transmitted content. UAV satellite communication telemetry and control data has a proprietary data format, with data frame lengths following a set pattern, and each frame contains time information, checksum information, etc. During transmission tasks, the transmitted data frames can be edited using integrated processing software. Editing methods include custom definition and data replay. Custom methods include adjusting frame length, modifying checksums, and altering time bits. After receiving the transmitted data frame output by the integrated processing software, the main control unit software determines whether to transmit via the remote control signal processing unit or the telemetry signal processing unit based on the information bytes within. It then performs format conversion on the data packet and sends it to the corresponding signal processing unit. The signal processing unit subsequently performs encoding, modulation, and D / A processing, and transmits the data via the intermediate frequency interface. This function allows for the verification of the receiver's anti-interference capability.

[0034] Receiving task processing functions: These include the storage, retrieval, analysis, and display of received data. After initiating a receiving task, the remote control signal processing unit or telemetry signal processing unit performs A / D processing, demodulation, and decoding on the received target UAV satellite communication air interface signal, converting it into data packets and sending them to the main control unit's software. The main control unit's software encapsulates, buffers, and sends the received data packets to the integrated processing software. The data is stored on the computer's hard drive, with a storage index including task time and task name for easy user retrieval. Users can retrieve the stored data as needed, displaying the raw data in the integrated processing software's visual interface. The software can also perform encryption strength analysis, conforming to the requirements of GJB7158-2011 and GB / T 32915-2016. Users can select and set detection items (routine detection, run detection, repeat detection, etc.) according to their requirements. The analysis results provide strong support for user judgment.

[0035] VIII. Example of a complete work process Taking the acquisition and analysis of satellite communication telemetry and control link signals of a certain type of UAV as an example, the specific implementation steps are as follows: Equipment Connection and Power-On: Connect the external AC220V power supply to power supply interface A, and power on via power-on control pin B. The power supply unit provides +12V, +5V, and +3.3V power to each unit through the high-speed motherboard.

[0036] Parameter configuration: On the integrated processing software interface of the control computer, the operator selects the working waveform corresponding to the target UAV (such as CDMA) and sets parameters such as modulation and demodulation mode, transmit / receive rate, and transmit / receive frequency. The integrated processing software generates a parameter setting frame and sends it to the main control unit through the integrated data interface C.

[0037] Waveform Loading and Status Monitoring: The main control unit parses the parameter setting frame and sends waveform loading and operating parameter configuration commands to the remote control signal processing unit and the telemetry signal processing unit via the RS485 control bus. The signal processing unit loads the corresponding waveform file from Flash, completes the configuration, and reports the operating status. Simultaneously, the main control unit collects information such as equipment temperature, voltage, and current, encapsulates it into status reporting frames, and sends them to the integrated processing software for display.

[0038] Executing the receiving task: The remote control signal processing unit and the telemetry signal processing unit receive the satellite communication air interface signal from the target UAV through the intermediate frequency interface, perform A / D conversion, demodulation, and decoding, and generate a received data packet, which is then reported to the main control unit via the SGMII IP data bus. The main control unit performs buffering, encapsulation, and flow control before sending the data to the integrated processing software. The integrated processing software stores the data and creates an index, allowing the operator to retrieve the data at any time for encryption strength analysis, with the analysis results presented in a visual format.

[0039] Execute the transmission task (optional): The operator edits the transmission data in the integrated processing software (frame length can be customized, checksums modified, time bits tampered with, etc.), generates a transmission data packet, and sends it to the main control unit. The main control unit determines the transmission channel based on the type information, performs format conversion and flow control, and then sends it to the corresponding signal processing unit. The signal processing unit completes encoding, modulation, and D / A conversion, and transmits it through the intermediate frequency interface to verify the receiver's anti-interference capability.

Claims

1. A UAV satellite communication telemetry and control link signal acquisition and analysis device, comprising a satellite communication link detection device and a control computer, wherein the satellite communication link detection device includes a main control unit, a remote control signal processing unit, and a telemetry signal processing unit, and the control computer runs integrated processing software; characterized in that, The monitoring and management process is as follows: The integrated processing software generates a parameter setting frame based on the input and sends the parameter setting frame to the main control unit. The main control unit receives and parses the parameter setting frame, generates a waveform loading instruction and a working parameter configuration instruction based on the parsing result, and sends them to the remote control signal processing unit and the telemetry signal processing unit, respectively. The remote control signal processing unit and the telemetry signal processing unit load the corresponding baseband processing waveform from their local memory according to the corresponding waveform loading instruction, and set their own working parameters according to the corresponding working parameter configuration instruction. The remote control signal processing unit and the telemetry signal processing unit collect their own working status information and report it to the main control unit; the main control unit collects the working status information reported by the remote control signal processing unit and the telemetry signal processing unit, encapsulates it into a status reporting frame and sends it to the integrated processing software; the integrated processing software receives the status reporting frame and performs visual display. Task transmission process: The integrated processing software provides a data transmission editing interface, supporting the generation of transmission data packets using a user-defined method or data replay method, and sends the transmission data packets to the main control unit; the main control unit receives the transmission data packets, parses the type information to determine whether the transmission should be performed by the remote control signal processing unit or the telemetry signal processing unit, performs format conversion on the transmission data packets and sends them to the corresponding signal processing unit, and performs flow control during the transmission process; the remote control signal processing unit or the telemetry signal processing unit receives the data packets sent by the main control unit, performs encoding, modulation and digital-to-analog conversion processing in sequence, and sends them out through the intermediate frequency interface; Task reception process: The remote control signal processing unit and the telemetry signal processing unit sequentially perform analog-to-digital conversion, demodulation, and decoding on the received satellite communication air interface signal, generate received data packets, and report them to the main control unit; the main control unit receives the data packets, performs buffering and encapsulation processing, and then sends them to the integrated processing software, and performs flow control during the reception process; the integrated processing software receives the received data packets forwarded by the main control unit, stores them on the computer hard drive and establishes an index, provides data retrieval function, displays the retrieved data in a visual interface, and performs encryption strength analysis on the data. The analysis results are used to determine the security of the satellite communication link; The remote control signal processing unit and the telemetry signal processing unit are each equipped with a large-capacity Flash memory for storing multiple sets of baseband processing waveform files; The main control unit controls the remote control signal processing unit or telemetry signal processing unit to load the corresponding waveform file from the Flash memory according to the working waveform type issued by the integrated processing software. The waveform file includes CDMA waveforms and FDMA waveforms. The remote control signal processing unit and the telemetry signal processing unit adopt a standard interface protocol and can be expanded to adapt to other models by replacing the boards. The main control unit converts the data packets sent by the integrated processing software into an interface protocol format that is compatible with the remote control signal processing unit or the telemetry signal processing unit. The flow control performed by the main control unit includes controlling the data packet transmission rate during transmission to ensure continuous processing by the signal processing unit; During the receiving process, the data packet reporting rate is controlled to ensure complete reception by the integrated processing software.

2. The UAV satellite communication telemetry and control link signal acquisition and analysis device according to claim 1, characterized in that, The parameter setting frame includes the working waveform type, modulation and demodulation method, transmit and receive rate, and transmit and receive frequency.

3. The UAV satellite communication telemetry and control link signal acquisition and analysis device according to claim 1, characterized in that, It also includes a clock unit, a power supply unit, and a high-speed motherboard module; The power supply unit receives external power and provides operating voltage to the main control unit, clock unit, remote control signal processing unit and telemetry signal processing unit through the high-speed motherboard module; The clock unit provides a reference clock to the remote control signal processing unit and the telemetry signal processing unit through the high-speed motherboard module.

4. The UAV satellite communication telemetry and control link signal acquisition and analysis device according to claim 1, characterized in that, The main control unit monitors the operating temperature of the satellite communication link detection device, the operating voltage and current of the power supply unit, and the operating status of the clock unit in real time; and encapsulates the monitored information into the status reporting frame and sends it to the integrated processing software for display.

5. The UAV satellite communication telemetry and control link signal acquisition and analysis device according to claim 1, characterized in that, The integrated processing software supports user-defined methods including: adjusting the frame length of the transmitted data frame, modifying the checksum information in the data frame, and tampering with the time bit information in the data frame.

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