Radar signal processing simulation platform

Abstract

The utility model discloses a radar signal processing simulation platform, which comprises a radar control display module and a guide head radar, and further comprises a global positioning system (GPS) work station and a missile-borne target analog simulation test system, the radar control display module is in signal connection with the GPS work station, the GPS work station is in signal connection with the missile-borne target analog simulation test system, and the guide head radar is in signal connection with the missile-borne target analog simulation test system. The missile-borne target analog simulation test system is in signal connection with the guide head radar; according to the utility model, when the signal processor is independently debugged, a typical point target / surface target is provided for the signal processor so as to detect the target searching and tracking capability of the radar signal processor and the SAR imaging of a surface target scene, and the improvement of various anti-interference algorithms is realized; besides, data recorded by an external field test is processed and then injected into the signal processor in a medium-frequency simulation echo form, and a target echo signal is reproduced truly, so that a complete function test is carried out on the signal processor.

Description

Technical Field

[0001] The utility model relates to the technical field of radar, and in particular to a radar signal processing simulation platform. Background Art

[0002] With the continuous development of radar technology, the performance of radar countermeasure equipment is constantly improving. There is an increasing demand to use radar equipment to verify the performance of radar countermeasure equipment. Compared with the actual radar, the radar simulation system can realize large sample, high efficiency and low consumption test, and is widely used in the combat performance, adaptability to complex electromagnetic environment and combat performance assessment of radar countermeasure equipment. With the improvement of radar performance and the need to upgrade and expand the simulation system, the open reconfiguration capability, real-time simulation and high-speed transmission of the radar simulation system have become key issues. Unlike actual radar equipment, the radar simulation system needs to simulate the target echo signal in real time, especially the real-time simulation and high-speed transmission of broadband radar echoes have always been technical challenges faced by the radar simulation system. At the same time, for the subsequent upgrade, transformation and expansion of the system, the system's software and hardware platform must meet the open and reconfigurable conditions, so that the real-time simulation of the general radar system can be realized.

[0003] For radar real-time simulation systems, traditional simulation methods are mostly implemented using the "FPGA+DSP" architecture. This architecture closely integrates software and hardware, and it is difficult to modify and upgrade the software in the later stage to adapt to new simulation requirements. At the same time, this method is mostly used to simulate narrowband radar systems. When applied to broadband radar system simulation, it is costly, difficult to develop, and has high maintenance costs. Traditional broadband radar simulation systems mostly use a playback architecture, that is, the target echo signal and radar transmission signal are pre-calculated before the test, and the signal is transmitted according to the timing control relationship during the test, and the signal processing is completed at the same time. When using the playback architecture to simulate the broadband radar system, only the search mode of the broadband radar system can be simulated to carry out open-loop tests, and the complete closed-loop process simulation of the search, tracking, and identification of the broadband radar system cannot be achieved.

[0004] The existing patent application number CN202011338246.1 discloses a broadband radar target echo signal simulation system and simulation method, which includes a main control computer, a signal processor and a radio frequency machine. The main control computer is used to realize system self-check, hardware status monitoring, test-related parameters and command settings, complete test initialization, drive the operation, management, monitoring of the entire system, and control the system to operate safely, reliably and stably in various modes to complete the predetermined test content; the signal processor is mainly used for real-time generation, sampling and signal processing of intermediate frequency broadband signals; the radio frequency machine includes an up-conversion module, a signal synthesis module and a down-conversion module.

[0005] The above-mentioned patent improves the open and reconfigurable capabilities and high-speed data exchange capabilities of the system. However, clutter signals are generated through two-stage transmission of the signal generation module - up-conversion module - complex electromagnetic environment simulation device, and the risk of signal interference is high. Therefore, a radar signal processing simulation platform is needed to solve this problem. Summary of the Invention

[0006] The purpose of the present invention is to provide a radar signal processing simulation platform to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A radar signal processing simulation platform includes a radar control and display module and a seeker radar. Among them, it further includes a GPS workstation and an on-board target simulation and testing system. The radar control and display module is signal-connected to the GPS workstation, the GPS workstation is signal-connected to the on-board target simulation and testing system, and the on-board target simulation and testing system is signal-connected to the seeker radar.

[0008] Preferably, the GPS workstation includes a simulator and a host computer. The simulator generates ballistic parameters, and the host computer generates radar parameters, target parameters, and scene information.

[0009] Preferably, the on-board target simulation and testing system includes a signal generation module, a DAC playback, an AD sampling, a storage module, a VPX main control board, and a digital intermediate frequency output. The signal generation module is signal-connected to the DAC playback, the AD sampling is signal-connected to the storage module, the storage module is signal-connected to the DAC playback, the VPX main control board is signal-connected to the DAC playback, and the DAC playback is signal-connected to the digital intermediate frequency output.

[0010] Preferably, the ballistic parameters, radar parameters, target parameters, and scene information are signal-connected to the database in the signal generation module.

[0011] Preferably, the on-board target simulation and testing system and the seeker radar are connected through signal bidirectional timing control and data output.

[0012] Beneficial effects: Compared with the prior art, the beneficial effects of the present invention are as follows: A radar signal processing simulation platform of the present invention provides typical point targets / area targets for the signal processor during the individual debugging of the signal processor to test the search and tracking capabilities of the radar signal processor for targets, SAR imaging of the area target scene, and realize the improvement of various anti-interference algorithms. In addition, the data recorded in the field test is processed and injected into the signal processor in the form of intermediate frequency analog echo to truly reproduce the target echo signal, so as to conduct a complete functional test on the signal processor. Brief Description of the Drawings

[0013] Figure 1 This is a schematic structural diagram of a radar signal processing simulation platform proposed by the present utility model.

[0014] In the attached drawings: radar control and display module 1, GPS workstation 2, simulator 21, host computer 22, missile-borne target simulation and testing system 3, signal generation module 31, DAC playback 32, AD sampling 33, storage module 34, VPX main control board 35, digital intermediate frequency output 36, seeker radar 4. Specific implementation manners

[0015] The technical solutions of this patent will be further described in detail below in conjunction with specific implementation manners.

[0016] Embodiment

[0017] Please refer to the attached drawings of the specification. In an embodiment of the present utility model, a radar signal processing simulation platform includes a radar control and display module 1 and a seeker radar 4. Among them, it further includes a GPS workstation 2 and a missile-borne target simulation and testing system 3. The radar control and display module 1 is connected to the GPS workstation 2 through signal control and display. The GPS workstation 2 is signal-connected to the missile-borne target simulation and testing system 3. The missile-borne target simulation and testing system 3 is signal-connected to the seeker radar 4. The missile-borne target simulation and testing system 3 has two selectable modes: single-pulse target echo generation and SAR target echo generation. The GPS workstation 2 includes a simulator 21 and a host computer 22. The simulator 21 generates ballistic parameters, and the host computer 22 generates radar parameters, target parameters, and scene information. The missile-borne target simulation and testing system 3 includes a signal generation module 31, DAC playback 32, AD sampling 33, storage module 34, VPX main control board 35, and digital intermediate frequency output 36. The signal generation module 31 is signal-connected to the DAC playback 32. The AD sampling 33 is signal-connected to the storage module 34. The storage module 34 is signal-connected to the DAC playback 32. The VPX main control board 35 is signal-connected to the DAC playback 32. The DAC playback 32 is signal-connected to the digital intermediate frequency output 36. The ballistic parameters, radar parameters, target parameters, and scene information are signal-connected to the database in the signal generation module 31. The missile-borne target simulation and testing system 3 is connected to the seeker radar 4 through signal bidirectional timing control and data output.

[0018] When the signal processor of the present utility model is separately debugged, typical point targets / area targets are provided for the signal processor to test the radar signal processor's ability to search for and track targets, perform SAR imaging on the area target scenario, and implement improvements to various anti-interference algorithms. In addition, the data recorded in the field test, after being processed, is injected into the signal processor in the form of intermediate frequency analog echo to truly reproduce the target echo signal, so as to conduct a complete functional test on the signal processor.

[0019] The related specific structure and communication principle are mature existing technologies and will not be elaborated here.

[0020] The above specific embodiments have further detailed the purpose, technical solution and beneficial effects of the present utility model. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0022] In the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A radar signal processing simulation platform, comprising a radar control display module (1) and a guidance head radar (4), characterized in that: It also comprises a GPS workstation (2) and a missile-borne target simulation test system (3), wherein the radar control display module (1) is connected to the GPS workstation (2) by signal, the GPS workstation (2) is connected to the missile-borne target simulation test system (3) by signal, and the missile-borne target simulation test system (3) is connected to the guidance head radar (4) by signal.

2. A radar signal processing simulation platform according to claim 1, characterized in that: The GPS workstation (2) comprises a simulator (21) and a host computer (22), wherein the simulator (21) generates trajectory parameters, and the host computer (22) generates radar parameters, target parameters and scene information.

3. A radar signal processing simulation platform according to claim 1, characterized in that: The missile-borne target simulation test system (3) comprises a signal generating module (31), a DAC playback (32), an AD sampling (33), a storage module (34), a VPX main control board (35) and a digital intermediate frequency output (36); the signal generating module (31) is connected to the DAC playback (32) signal, the AD sampling (33) is connected to the storage module (34) signal, the storage module (34) is connected to the DAC playback (32) signal, the VPX main control board (35) is connected to the DAC playback (32) signal, and the DAC playback (32) is connected to the digital intermediate frequency output (36) signal.

4. A radar signal processing simulation platform according to claim 2, characterized in that: The trajectory parameters, radar parameters, target parameters and scene information are connected to the database signal in the signal generating module (31).

5. The radar signal processing simulation platform according to claim 1, characterized in that: The missile-borne target simulation test system (3) is connected to the guidance head radar (4) through signal bidirectional timing control and data output.

Images