CN112578346A - Broadband radar target echo signal simulation system and simulation method - Google Patents
Broadband radar target echo signal simulation system and simulation method Download PDFInfo
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Abstract
The invention discloses a broadband radar target echo signal simulation system, which comprises a main control computer, a signal processor and a radio frequency machine, wherein the main control computer is used for realizing system self-check, hardware state monitoring, test related parameter and command setting, completing test initialization, driving the operation, management and monitoring of the whole system, controlling the system to safely, reliably and stably operate in various modes and completing preset test contents; the signal processor is mainly used for real-time generation, sampling and signal processing of intermediate frequency broadband signals; the radio frequency machine comprises an up-conversion module, a signal synthesis module and a down-conversion module. The invention also discloses a broadband radar target echo signal simulation method. The invention can realize the real-time simulation of the broadband radar system on a general computing platform, greatly improves the open reconfigurable capability and the high-speed data exchange capability of the system, can develop the broadband radar counter injection type simulation test, and provides a research platform for the test and training of an electronic information system.
Description
Technical Field
The invention belongs to the technical field of radars, relates to the technical field of radar target echo signal simulation, and particularly relates to a broadband radar target echo signal simulation system and a broadband radar target echo signal simulation method.
Background
Along with the continuous development of radar technology, the performance of radar countermeasure equipment is continuously improved, the requirement for verifying the performance of the radar countermeasure equipment by utilizing the radar equipment is more and more, compared with a real-mounted radar, a radar simulation system can realize a large-sample, high-efficiency and low-consumption test, and the radar simulation system is widely applied to battle skill performance, complex electromagnetic environment adaptability and operation performance assessment of the radar countermeasure equipment. With the improvement of radar performance and the upgrading and expanding requirements of the simulation system, the open reconfigurable capability, real-time simulation and high-speed transmission of the radar simulation system become key problems. Different from actual radar equipment, a radar simulation system needs to simulate a target echo signal in real time, particularly real-time simulation and high-speed transmission of a broadband radar echo are technical problems faced by the radar simulation system all the time, and meanwhile, in order to upgrade, transform and expand the system subsequently, software and hardware platforms of the system need to meet open reconfigurable conditions, so that real-time simulation of a general radar system can be realized.
For a radar real-time simulation system, a traditional simulation method is mostly realized by adopting an FPGA + DSP architecture, software and hardware of the architecture are tightly combined, the software is difficult to modify and upgrade in the later period so as to adapt to new simulation requirements, meanwhile, the method is mostly applied to simulating a narrow-band radar system, and when the method is applied to simulating a broadband radar system, the cost is high, the development difficulty is large, and the maintenance cost is high. A traditional broadband radar simulation system mostly adopts a playback type framework, namely, a target echo signal and a radar transmitting signal are calculated in advance before a test, the signal is transmitted according to a time sequence control relationship in the test process, and meanwhile, signal processing is completed. When a playback type architecture is adopted to simulate a radar broadband system, only a search mode of the broadband radar system can be simulated to carry out an open-loop test, and complete closed-loop process simulation of search, tracking and identification of the broadband radar system cannot be realized.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a broadband radar target echo signal simulation system and a simulation method, which utilize a general computing platform to simulate a broadband echo signal of a radar in real time, utilize a real-time Linux operating system and a computing communication board to improve response time of radar simulation calculation, and implement transmission and storage of multiple broadband echo signals through a high-speed optical fiber, thereby implementing real-time simulation of a broadband radar system with an open reconfigurable architecture.
In order to achieve the purpose, the invention adopts the following technical scheme:
a broadband radar target echo signal simulation system comprises a main control computer, a signal processor and a radio frequency machine;
the main control machine comprises a control and management computer, a radar comprehensive display and control computer and a first power panel, wherein the control and management computer is used for finishing the functions of planning of experimental combat situations, setting of system working parameters, state display, simulation flow control and simulation picture display;
the signal processor comprises a signal generating module, a signal collecting module, a calculating communication module, a real-time calculating module, a GPU board, a first optical fiber board, a second optical fiber board, a tera network exchange board, a second power board, a calculated interface board, a communicated interface board and a controlled interface board; the signal generation module is used for converting the baseband target echo signal into an intermediate frequency signal to generate a broadband radar intermediate frequency target echo signal, or converting a radar transmitting signal into an intermediate frequency signal to generate an intermediate frequency radar transmitting signal, and sending the intermediate frequency signal into an up-conversion module in the radio frequency case; the signal acquisition module is used for converting the intermediate frequency radar echo signal into a digital radar echo signal and generating a time sequence control signal of the whole system according to the battle situation information; the computing communication module is used for carrying out data communication of working state and signal control with the main control computer; the real-time computing module is used for completing real-time simulation of the broadband radar echo signals and real-time processing of the radar echo signals; the GPU board is used for completing real-time simulation of the broadband radar echo signals and real-time processing of the radar echo signals in cooperation with the real-time computing module; the first optical fiber plate is used for communicating with the signal generation module and the second optical fiber plate and forwarding a signal control word from the second optical fiber plate; the second optical fiber plate is used for communicating with the signal acquisition module, the first optical fiber plate and the calculated interface board, and sending the digital radar echo signals obtained by the signal acquisition module into the real-time calculation module through optical fibers for processing; the tera network exchange board is used for internal network communication of the signal processor; the second power panel is used for supplying power to the signal processor; the calculated interface board is used for receiving digital radar echo signals from the signal acquisition module forwarded by the second optical fiber board; the communication back interface board is used for performing data interaction with the main control and the display machine, receiving the control parameters of the signal processor and reporting the working state of the system; the controlled interface board is used for communicating with the radio frequency machine to complete the parameter control of frequency and power;
the radio frequency machine comprises an up-conversion module, a signal synthesis module and a down-conversion module, wherein the up-conversion module is used for realizing the up-conversion function of an intermediate frequency radar transmitting signal and an intermediate frequency target echo signal from a signal generation module of the signal processor; the signal synthesis module is used for completing radio frequency synthesis of a target echo signal and an environment signal to form a multi-channel radio frequency radar echo signal; the down-conversion module is used for completing down-conversion processing of the multi-channel radio frequency radar echo signals to form multi-channel intermediate frequency radar echo signals.
A broadband radar target echo signal simulation method is realized based on the broadband radar target echo signal simulation system, and comprises the following steps:
s1, simulating system power-on and self-checking, and completing system initialization according to the situation information set by the system;
s2, generating simulation test fighting information by the control and management computer of the main control computer;
s3, a signal acquisition module of the signal processor generates a time sequence control signal of the whole simulation system according to the battlefield information;
s4, after receiving the battle information, the real-time computing module of the signal processor utilizes the GPU board to generate digital signals of radar target echo signals and radar transmitting signals in real time according to set parameters;
s5, the real-time calculation module transfers the generated digital signals to a first optical fiber plate through a calculated interface board, an optical fiber and a second optical fiber plate, and the first optical fiber plate sends the digital signals to the signal generation module through a back plate;
s6, the signal generation module converts the digital target echo signal and the radar emission signal into an intermediate frequency target echo signal and an intermediate frequency radar emission signal respectively;
s7, an up-conversion module in the radio frequency machine converts the intermediate frequency target echo signal and the intermediate frequency radar transmitting signal into a radio frequency signal, the radio frequency target echo signal is sent to a signal synthesis module, and the radio frequency radar transmitting signal is sent to the complex electromagnetic environment simulation equipment;
s8, after receiving the radar emission signal, the complex electromagnetic environment simulation equipment generates a radio frequency electromagnetic environment signal;
s9, the signal synthesis module completes radio frequency synthesis of a target echo signal and an environment signal to form a multi-channel radar echo signal and sends the multi-channel radar echo signal to the down-conversion module, and the down-conversion module converts the radio frequency signal into an intermediate frequency signal and sends the intermediate frequency signal to the signal acquisition module in the signal processor;
s10, the signal acquisition module finishes sampling of intermediate frequency radar echo signals, the intermediate frequency radar echo signals are sent to the real-time calculation module through the first optical fiber plate, the second optical fiber plate, the optical fibers and the calculated interface board, and the real-time calculation module sends the digital echo signals to the GPU board for processing;
s11, the GPU board completes signal processing and data processing of the radar echo signals according to the system time sequence signals;
s12, finishing PPI display of a radar operation interface by the radar comprehensive display and control computer of the main control and display machine;
s13, judging whether the test is finished, if yes, finishing the test, if no, going to step S3 to continue the broadband radar confrontation semi-physical simulation test.
Due to the adoption of the technical scheme, the invention has the following advantages:
the broadband radar target echo signal simulation system and the simulation method realize open and reconfigurable echo simulation and radar signal processing by utilizing a CPU + GPU architecture, improve the response time of a general computing platform of a radar system by utilizing a real-time Linux operating system and a real-time interrupt response interface, realize high-speed transmission and interaction of multi-channel broadband signals through an optical fiber plate, further realize the real-time simulation of the broadband radar system on the general computing platform, and greatly improve the open reconfigurable capability and the high-speed data exchange capability of the system; the broadband radar anti-injection simulation test system can realize real-time simulation of the broadband radar, develop an anti-injection simulation test of the broadband radar, provide a research platform for testing and training of an electronic information system, and has good popularization and application values.
Drawings
FIG. 1 is a schematic structural diagram of a broadband radar target echo signal simulation system according to the present invention;
FIG. 2 is a schematic diagram of a signal generation module in the broadband radar target echo signal simulation system according to the present invention;
FIG. 3 is a schematic structural diagram of a signal acquisition module in the broadband radar target echo signal simulation system according to the present invention;
FIG. 4 is a schematic structural diagram of a first optical fiber plate in the broadband radar target echo signal simulation system according to the present invention;
FIG. 5 is a flow chart of a method for simulating a target echo signal of the broadband radar of the present invention;
FIG. 6 is a flow chart of a real-time simulation of a radar echo signal;
FIG. 7 is a flow chart of signal processing using a GPU board;
FIG. 8 is a flow chart for data processing using a GPU board.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, a broadband radar target echo signal simulation system includes a main control computer, a signal processor and a radio frequency machine;
the main control computer is used for realizing system self-checking, hardware state monitoring, test related parameter and command setting, completing test initialization, driving the whole system to run, manage, monitor and control the system to run safely, reliably and stably in various modes to complete preset test contents; the system comprises a control and management computer, a radar comprehensive display and control computer and a first power panel, wherein the control and management computer is used for finishing the functions of test and battle situation planning, system working parameter setting, system working time sequence setting, state display, simulation flow control, simulation picture display, simulation result evaluation and simulation data playback control; the radar comprehensive display control computer is used for radar simulation control, has the functions of issuing information such as working parameters and control instructions, receiving reported states, target data and the like in the test process, displaying PPI (pulse indication protocol), providing a visual monitoring interface for an operator and realizing data communication with the control and management computer; the first power panel is used for supplying power to the main control computer, rectifying the input AC220V and converting the rectified AC into different direct current voltages for output;
the signal processor is mainly used for real-time generation, sampling and signal processing of intermediate-frequency broadband signals and comprises a signal generation module, a signal acquisition module, a calculation communication module, a real-time calculation module, a GPU (graphics processing unit) board, a first optical fiber board, a second optical fiber board, a tera network exchange board, a second power supply board, a calculated interface board, a communication interface board and a control interface board;
as shown in fig. 2, the signal generating module includes an FPGA module, 4 DAC modules, a clock generator, a 100G optical module, a power module, and an IPMI module, where the FPGA module is connected to the 4 DAC modules through a high-speed JESD204B interface, and connected to the 100G optical module through a 25Gx4 GTY interface; the 4 DAC modules are connected with the 4 signal conditioning modules and further connected with the 8-path analog signal output interface; the clock generator provides a high-speed timing clock for the FPGA and the 4 DAC modules; the signal generation module is realized based on FPGA + DAC and is mainly used for converting 8-path radar transmitting and echo baseband signals into intermediate frequency signals under the control of the working time sequence of an analog system, the signal generation module is a standard 6U-height VPX digital board card, the FPGA module adopts XCVU9P of Xilinx, and the DAC module selects AD9176 to realize intermediate frequency output of 8-path broadband signals;
as shown in fig. 3, the signal acquisition module includes an FPGA module, 4 DAC modules, a clock generator, a 100G optical module, a power module, and an IPMI module, where the FPGA module is connected to the 4 ADC modules through a high-speed JESD204B interface, and connected to the 100G optical module through a 25Gx4 GTY interface; the 4 ADC modules are connected with the 4 signal conditioning modules and further connected with the 8-path analog signal input interface; the clock generator provides a high-speed timing clock for the FPGA and the 4 ADC modules; the signal acquisition module is realized on the basis of FPGA and ADC, and is mainly used for conditioning and sampling 8 paths of analog signals input through an analog signal input interface under the control of the working time sequence of an analog system, carrying out DDC and extraction processing according to working parameters of the analog system, transmitting the 8 paths of digitized intermediate-frequency echo signals to a real-time computing board and a GPU board in a case for radar signal processing and data processing, and generating the working time sequence of the whole system by the signal acquisition module, wherein the working time sequence comprises 5 paths of pulses including PRI, CPI, wave train, transceiving conversion and interception control; the FPGA module of the signal acquisition module adopts XCVU13P of Xilinx, and the ADC module selects ADC12DJ3200 to realize intermediate frequency acquisition of 8-path broadband signals.
The computing communication module is realized based on an X86 architecture, and is provided with a real-time Linux operating system for data communication of working state and signal control with a main control computer;
the real-time computing module and the GPU board are combined to complete real-time generation and processing of radar echo signals, open and reconfigurable radar processing is achieved by adopting a CPU + GPU architecture, and the GPU board performs data transmission with the real-time computing board through a PCIe X16 interface of the backboard; the real-time computing board is provided with a real-time Linux operating system, responds to the working time sequence pulse output by the signal acquisition board through the back board through the real-time interrupt response interface, generates a target echo signal and a radar transmitting signal in real time according to the working time sequence, and receives a broadband radar receiving signal output by the second optical fiber board through the optical fiber and the computed interface board;
the GPU board is used for completing real-time simulation of the broadband radar echo signals and real-time processing of the radar echo signals in cooperation with the real-time computing module;
the first optical fiber plate and the second optical fiber plate have the same structure, and the description is given with reference to the first optical fiber plate in fig. 4. The first optical fiber plate comprises an FPGA module, an optical module, a DDR4 module and a PLL module, the optical fiber plate is realized based on the FPGA and the optical module, and the first optical fiber plate is used for communicating with the signal generation module and the second optical fiber plate, forwarding configuration information and a waveform file from the second optical fiber plate, forming configuration and data and sending the configuration and data to the signal generation module; the second optical fiber plate is used for communicating with the signal acquisition module, the first optical fiber plate and the calculated interface board, sending the digital radar echo signals obtained by the signal acquisition module into the real-time calculation module through the optical fibers and the calculated interface board for processing, and reporting the working state to the calculation communication module by using the gigabit network; the FPGA of the optical fiber board adopts XCKU085 of Xilinx, DDR4 is stored as 32GB, and PLL provides clock signals for the FPGA.
The tera network exchange board is used for internal network communication of the signal processor; the second power panel is used for supplying power to the signal processor;
the interface board after calculation is realized on the basis of an FPGA (field programmable gate array), and drives to generate a plurality of paths of time sequence control signals according to the time sequence control signals sent by the optical fiber board, and sends the time sequence control signals to different processing equipment, receives echo signals output by the signal acquisition module, and outputs control instructions of the signal generation board and the signal acquisition board;
the communication back interface board is used for performing data interaction with the main control and the display machine, receiving the control parameters of the signal processor and reporting the working state of the system;
the controlled interface board consists of 9 paths of synchronous serial ports and is used for communicating with the radio frequency machine, sending synchronous control signals to the radio frequency machine and receiving working state data fed back by the radio frequency machine to complete the parameter control of frequency and power;
the radio frequency machine comprises an up-conversion module, a signal synthesis module and a down-conversion module, wherein the up-conversion module is used for realizing the up-conversion, filtering and amplification functions of an intermediate frequency radar transmitting signal and an intermediate frequency target echo signal from a signal generation module of the signal processor; the signal synthesis module is used for completing radio frequency synthesis of a target echo signal and an environment signal to form a multi-channel radio frequency radar echo signal; the down-conversion module is used for completing low-noise amplification, filtering and down-conversion processing of the multi-channel radio frequency radar echo signal to form a multi-channel intermediate frequency radar echo signal.
A broadband radar target echo signal simulation method is realized based on the broadband radar target echo signal simulation system, and comprises the following steps:
s1, simulating system power-on and self-checking, and completing system initialization according to the situation information set by the system;
s2, the control and management computer of the main control computer generates simulation test situation information, the control and management computer issues the situation information to the calculation communication module and the real-time calculation module of the signal processing case through the gigabit network exchange board, and the situation information comprises information such as platform deployment, track planning, broadband radar system working parameter setting, complex electromagnetic environment simulation equipment working parameter setting, test planning and the like;
s3, after receiving the fighting information, the computing communication module of the signal processor forwards the fighting information to the signal acquisition module, and the signal acquisition module generates a time sequence signal required by the whole system control according to the fighting information;
s4, after receiving the battle information, the real-time computing module of the signal processor utilizes the GPU board to generate digital signals of radar target echo signals and radar transmitting signals in real time according to set parameters; the target echo signal calculation needs to calculate three parts: calculating the envelope of the echo according to the radar working mode and the transmitting signal information; calculating scattering information of the target according to the type and the posture of the target, and calculating the integral scattering information in the radar frequency range coverage according to Feko and other electromagnetic calculation software for a broadband radar system; and calculating the echo intensity and the time delay of the target under the beam coverage according to the direction of the radar beam and the target position. After obtaining the scattering information, the echo signal calculation can be obtained by using the method shown in fig. 6;
s5, the real-time calculation module transfers the generated digital signals to a first optical fiber plate through a calculated interface board, an optical fiber and a second optical fiber plate, and the first optical fiber plate sends the digital signals to the signal generation module through a back plate;
s6, the signal generation module converts the digital target echo signal and the radar emission signal into an intermediate frequency target echo signal and an intermediate frequency radar emission signal respectively according to the time sequence signal, and transmits the intermediate frequency signal to the radio frequency machine through a cable;
s7, an up-conversion module in the radio frequency machine converts the intermediate frequency target echo signal and the intermediate frequency radar transmitting signal into a radio frequency signal, the radio frequency target echo signal is sent to a signal synthesis module, and the radio frequency radar transmitting signal is sent to the complex electromagnetic environment simulation equipment;
s8, after receiving the radar emission signal, the complex electromagnetic environment simulation equipment generates a corresponding radio frequency electromagnetic environment signal and enters a signal synthesis module of the radio frequency machine;
s9, the signal synthesis module completes radio frequency synthesis of a target echo signal and an environment signal to form a multi-channel radar echo signal and sends the multi-channel radar echo signal to the down-conversion module, and the down-conversion module converts the radio frequency signal into an intermediate frequency signal and sends the intermediate frequency signal to the signal acquisition module in the signal processor;
s10, the signal acquisition module finishes sampling of intermediate frequency radar echo signals according to the time sequence of the analog system, the intermediate frequency radar echo signals are sent to the real-time calculation module through the first optical fiber plate, the second optical fiber plate, the optical fibers and the calculated interface board, and the real-time calculation module sends the digital echo signals to the GPU plate for processing;
s11, the GPU board completes signal processing and data processing of radar echo signals according to the analog system time sequence signals received from the backboard; the signal processing flow is shown in fig. 7, and includes digital quadrature demodulation, pulse compression, sidelobe cancellation, MTI + MTD filtering, CFAR detection, and angle measurement functions, and the data processing flow is shown in fig. 8, and includes trace point preprocessing, track processing (track association, track initiation, track maintenance, and track termination), tracking filtering, and measurement system error compensation functions;
s12, finishing PPI display of a radar operation interface by the radar comprehensive display and control computer of the main control and display machine;
s13, judging whether the test is finished, if yes, finishing the test, if no, going to step S3 to continue the broadband radar confrontation semi-physical simulation test.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, and all equivalent changes and modifications made within the scope of the claims of the present invention should fall within the protection scope of the present invention.
Claims (3)
1. A broadband radar target echo signal simulation system is characterized in that: the system comprises a main control machine, a signal processor and a radio frequency machine;
the main control computer is used for realizing system self-checking, hardware state monitoring, test related parameter and command setting, completing test initialization, driving the whole system to run, manage, monitor and control the system to run safely, reliably and stably in various modes to complete preset test contents;
the signal processor comprises a signal generating module, a signal collecting module, a calculating communication module, a real-time calculating module, a GPU board, a first optical fiber board, a second optical fiber board, a tera network exchange board, a second power board, a calculated interface board, a communicated interface board and a controlled interface board; the signal generation module is used for converting the baseband target echo signal into an intermediate frequency signal to generate a broadband radar intermediate frequency target echo signal, or converting a radar transmitting signal into an intermediate frequency signal to generate an intermediate frequency radar transmitting signal, and sending the intermediate frequency signal into an up-conversion module in the radio frequency case; the signal acquisition module is used for converting the intermediate frequency radar echo signal into a digital radar echo signal and generating a time sequence control signal of the whole system according to the battle situation information; the computing communication module is used for carrying out data communication of working state and signal control with the main control computer; the real-time computing module is used for completing real-time simulation of the broadband radar echo signals and real-time processing of the radar echo signals; the GPU board is used for completing real-time simulation of the broadband radar echo signals and real-time processing of the radar echo signals in cooperation with the real-time computing module; the first optical fiber plate is used for communicating with the signal generation module and the second optical fiber plate and forwarding a signal control word from the second optical fiber plate; the second optical fiber plate is used for communicating with the signal acquisition module, the first optical fiber plate and the calculated interface board, and sending the digital radar echo signals obtained by the signal acquisition module into the real-time calculation module through optical fibers for processing; the tera network exchange board is used for internal network communication of the signal processor; the second power panel is used for supplying power to the signal processor; the calculated interface board is used for receiving digital radar echo signals from the signal acquisition module forwarded by the second optical fiber board; the communication back interface board is used for performing data interaction with the main control and the display machine, receiving the control parameters of the signal processor and reporting the working state of the system; the controlled interface board is used for communicating with the radio frequency machine to complete the parameter control of frequency and power;
the radio frequency machine comprises an up-conversion module, a signal synthesis module and a down-conversion module, wherein the up-conversion module is used for realizing the up-conversion function of an intermediate frequency radar transmitting signal and an intermediate frequency target echo signal from a signal generation module of the signal processor; the signal synthesis module is used for completing radio frequency synthesis of a target echo signal and an environment signal to form a multi-channel radio frequency radar echo signal; the down-conversion module is used for completing down-conversion processing of the multi-channel radio frequency radar echo signals to form multi-channel intermediate frequency radar echo signals.
2. The wideband radar target echo signal simulation system according to claim 1, wherein: the main control machine comprises a control and management computer, a radar comprehensive display and control computer and a first power panel, wherein the control and management computer is used for finishing the functions of planning test and fighting situations, setting system working parameters, displaying states, controlling simulation processes and displaying simulation pictures, the radar comprehensive display and control computer is used for simulating and controlling the radar, realizing the data communication with the control and management computer and finishing the functions of controlling the radar simulation system, controlling parameters and displaying PPI, and the first power panel is used for supplying power to the main control machine.
3. A method for simulating a broadband radar target echo signal is characterized by comprising the following steps: it is realized based on the wideband radar target echo signal simulation system of claim 1 or 2, comprising the following steps:
s1, simulating system power-on and self-checking, and completing system initialization according to the situation information set by the system;
s2, generating simulation test fighting information by the control and management computer of the main control computer;
s3, a signal acquisition module of the signal processor generates a time sequence control signal of the whole simulation system according to the battlefield information;
s4, after receiving the battle information, the real-time computing module of the signal processor utilizes the GPU board to generate digital signals of radar target echo signals and radar transmitting signals in real time according to set parameters;
s5, the real-time calculation module transfers the generated digital signals to a first optical fiber plate through a calculated interface board, an optical fiber and a second optical fiber plate, and the first optical fiber plate sends the digital signals to the signal generation module through a back plate;
s6, the signal generation module converts the digital target echo signal and the radar emission signal into an intermediate frequency target echo signal and an intermediate frequency radar emission signal respectively;
s7, an up-conversion module in the radio frequency machine converts the intermediate frequency target echo signal and the intermediate frequency radar transmitting signal into a radio frequency signal, the radio frequency target echo signal is sent to a signal synthesis module, and the radio frequency radar transmitting signal is sent to the complex electromagnetic environment simulation equipment;
s8, after receiving the radar emission signal, the complex electromagnetic environment simulation equipment generates a radio frequency electromagnetic environment signal;
s9, the signal synthesis module completes radio frequency synthesis of a target echo signal and an environment signal to form a multi-channel radar echo signal and sends the multi-channel radar echo signal to the down-conversion module, and the down-conversion module converts the radio frequency signal into an intermediate frequency signal and sends the intermediate frequency signal to the signal acquisition module in the signal processor;
s10, the signal acquisition module finishes sampling of intermediate frequency radar echo signals, the intermediate frequency radar echo signals are sent to the real-time calculation module through the first optical fiber plate, the second optical fiber plate, the optical fibers and the calculated interface board, and the real-time calculation module sends the digital echo signals to the GPU board for processing;
s11, the GPU board completes signal processing and data processing of the radar echo signals according to the system time sequence signals;
s12, finishing PPI display of a radar operation interface by the radar comprehensive display and control computer of the main control and display machine;
s13, judging whether the test is finished, if yes, finishing the test, if no, going to step S3 to continue the broadband radar confrontation semi-physical simulation test.
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| CN113109773A (en) * | 2021-04-13 | 2021-07-13 | 武汉卓目科技有限公司 | VPX-based distributed radar echo signal simulation system and method |
| CN113156387A (en) * | 2021-04-29 | 2021-07-23 | 北京无线电测量研究所 | Radar target simulation assembly and radar detection method |
| CN113219427A (en) * | 2021-05-22 | 2021-08-06 | 中国船舶重工集团公司第七二三研究所 | Radar-transmitted-signal-based target echo amplitude fluctuation simulation system and method |
| CN113721206A (en) * | 2021-08-27 | 2021-11-30 | 四创电子股份有限公司 | Radar signal-based waveform generation device |
| CN114397634A (en) * | 2022-01-14 | 2022-04-26 | 中国电子科技集团公司第十研究所 | Outfield ground test system for airborne radar electronic warfare function performance |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103400003A (en) * | 2013-07-22 | 2013-11-20 | 西安电子科技大学 | Method for achieving laser radar scene simulation on basis of GPU programming |
| CN103869292A (en) * | 2014-04-02 | 2014-06-18 | 清华大学 | General purpose radar imaging processing system based on embedded GPU |
| CN104597440A (en) * | 2015-01-12 | 2015-05-06 | 中国人民解放军63921部队 | Intelligent radar based on target motion matching |
| CN107229038A (en) * | 2017-06-22 | 2017-10-03 | 北京仿真中心 | A kind of clutter simulation method in kind of radio frequency based on GPU half |
| EP3296760A1 (en) * | 2016-09-20 | 2018-03-21 | LEONARDO S.p.A. | Method and system for testing radar systems |
| CN109164428A (en) * | 2018-10-15 | 2019-01-08 | 华清瑞达（天津）科技有限公司 | Digital radar analogue system and method |
| US20190129026A1 (en) * | 2015-06-04 | 2019-05-02 | Chikayoshi Sumi | Measurement and imaging instruments and beamforming method |
| CN110515040A (en) * | 2019-08-23 | 2019-11-29 | 睿清电子技术(南京)有限公司 | A kind of radar transmit-receive simulation integrated system and its application |
| WO2020081962A1 (en) * | 2018-10-19 | 2020-04-23 | Duke University | Methods, systems and computer program products for ultrasound imaging using coherence contribution |
-
2020
- 2020-11-25 CN CN202011338246.1A patent/CN112578346B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103400003A (en) * | 2013-07-22 | 2013-11-20 | 西安电子科技大学 | Method for achieving laser radar scene simulation on basis of GPU programming |
| CN103869292A (en) * | 2014-04-02 | 2014-06-18 | 清华大学 | General purpose radar imaging processing system based on embedded GPU |
| CN104597440A (en) * | 2015-01-12 | 2015-05-06 | 中国人民解放军63921部队 | Intelligent radar based on target motion matching |
| US20190129026A1 (en) * | 2015-06-04 | 2019-05-02 | Chikayoshi Sumi | Measurement and imaging instruments and beamforming method |
| EP3296760A1 (en) * | 2016-09-20 | 2018-03-21 | LEONARDO S.p.A. | Method and system for testing radar systems |
| CN107229038A (en) * | 2017-06-22 | 2017-10-03 | 北京仿真中心 | A kind of clutter simulation method in kind of radio frequency based on GPU half |
| CN109164428A (en) * | 2018-10-15 | 2019-01-08 | 华清瑞达（天津）科技有限公司 | Digital radar analogue system and method |
| WO2020081962A1 (en) * | 2018-10-19 | 2020-04-23 | Duke University | Methods, systems and computer program products for ultrasound imaging using coherence contribution |
| CN110515040A (en) * | 2019-08-23 | 2019-11-29 | 睿清电子技术(南京)有限公司 | A kind of radar transmit-receive simulation integrated system and its application |
Non-Patent Citations (2)
| Title |
|---|
| 刘鹏军等: ""组网雷达对抗半实物仿真试验系统架构设计"", 《舰船电子工程》, vol. 40, no. 12, pages 65 - 69 * |
| 艾小锋等: ""基于实测信号的无源雷达仿真评估系统"", 《系统仿真学报》, vol. 28, no. 8, pages 1833 - 1840 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109773A (en) * | 2021-04-13 | 2021-07-13 | 武汉卓目科技有限公司 | VPX-based distributed radar echo signal simulation system and method |
| CN113156387A (en) * | 2021-04-29 | 2021-07-23 | 北京无线电测量研究所 | Radar target simulation assembly and radar detection method |
| CN113219427A (en) * | 2021-05-22 | 2021-08-06 | 中国船舶重工集团公司第七二三研究所 | Radar-transmitted-signal-based target echo amplitude fluctuation simulation system and method |
| CN113721206A (en) * | 2021-08-27 | 2021-11-30 | 四创电子股份有限公司 | Radar signal-based waveform generation device |
| CN114397634A (en) * | 2022-01-14 | 2022-04-26 | 中国电子科技集团公司第十研究所 | Outfield ground test system for airborne radar electronic warfare function performance |
| CN114397634B (en) * | 2022-01-14 | 2023-06-09 | 中国电子科技集团公司第十研究所 | Airborne radar electronic warfare functional performance outfield ground test system |
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