Complex electromagnetic environment adaptability verification method and system

Abstract

The invention relates to the technical field of test verification, and discloses a complex electromagnetic environment adaptability verification method and system, and the method comprises the steps: constructing a typical test scene, and setting scene parameters which comprise a radiation source related parameter, a receiver related parameter and a relative position relation between two motion parties; and dynamically deducing and resolving a multi-channel data file containing amplitude, phase and frequency shift according to a preset simulation rhythm, driving a plurality of universal instruments to generate a plurality of paths of coherent radio frequency signals, and injecting the coherent radio frequency signals into a receiver to execute target function verification. The method is flexible in scene planning, high in test verification ergodicity, high in radio frequency index precision and high in stability, and the whole system can be quickly recombined, split and expanded according to a receiver channel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of test verification, in particular to a complex electromagnetic environment adaptability verification method and system. BACKGROUND

[0002] To ensure the functional performance of the receiver in the complex electromagnetic environment, a complex electromagnetic test environment with high degrees of freedom, strong ergodicity and high fidelity needs to be constructed. The real installation verification has high complexity, high cost and long time-consuming period, and the pure digital simulation has low fidelity and weak time efficiency ratio. The radio frequency injection type semi-physical verification takes into account the fidelity, complexity and ergodicity. Real radio frequency signal interaction can be realized, and test scenes, motion relationships and signal characteristics can be flexibly and conveniently set, so that the ergodicity test verification can be efficiently and quickly carried out.

[0003] The patent application CN116992631A discloses a radar electromagnetic environment effect modeling and cross-level simulation method, which comprises the following steps: S1, establishing a structure framework of a high-level system confrontation simulation system; S2, according to the role of the radar in the system confrontation and the framework structure of the simulation deduction system; S3, under the constraint and guidance of the effect modeling framework, performing radar engineering level and combat level effect modeling work, and finally obtaining a radar combat level simulation model for system confrontation simulation; S4, applying the radar combat level simulation model obtained in the effect modeling stage to the high-level system confrontation simulation system to perform system confrontation simulation. The simulation method can realize the application of the radar model in large-scale, multi-combat system confrontation simulation, effectively balance the contradiction between the simulation precision and the simulation efficiency in large-scale system confrontation simulation, ensure the confidence of the simulation result, and meet the efficiency requirement of the system confrontation simulation. However, the simulation method is mainly digital domain simulation, and lacks real radio frequency signal interaction.

[0004] The utility model CN206058609U discloses a radar electromagnetic environment simulation system, including radar signal launch device, radar signal generating device, electromagnetic environment analysis device and electromagnetic environment simulation device;Radar signal launch device includes servo controller, servo motor and broadband antenna, the broadband antenna is installed on servo motor, and servo motor and servo controller are connected;Radar signal generating device includes at least three digital frequency synthesizer and at least three upconverter, and digital frequency synthesizer and upconverter are connected through the same coaxial cable, and upconverter is connected with the broadband antenna through the same coaxial cable;Electromagnetic environment analysis device includes FPGA and digital signal processor, and the FPGA and digital signal processor are connected, and the FPGA is connected with digital frequency synthesizer and servo controller respectively. Although the radar electromagnetic environment simulation system has radio frequency signal generation capacity, but does not have dynamic scene planning, antenna scanning characteristic and receiver antenna installation characteristic simulation capacity. SUMMARY

[0005] To solve the above problems, the application provides a complex electromagnetic environment adaptability verification method and system, which has flexible scene planning, strong test verification traversal, high radio frequency index precision and strong stability, and the whole system can be quickly reorganized, split and expanded according to a receiver channel.

[0006] The technical scheme adopted by the application is as follows: A complex electromagnetic environment adaptability verification method comprises the following steps: A typical test scene is constructed, and scene parameters are set, wherein the scene parameters comprise radiation source related parameters, receiver related parameters and relative position relationship of the two moving parties. According to a preset simulation rhythm, a multi-channel data file containing amplitude, phase and frequency shift is dynamically deduced and solved, a plurality of general instruments are driven to generate a plurality of coherent radio frequency signals, and the radio frequency signals are injected into the receiver to execute target function verification.

[0007] Further, the radiation source related parameters comprise working frequency, working mode, antenna scanning, antenna directional diagram, antenna polarization and signal waveform parameters of the radiation source.

[0008] Further, the receiver related parameters comprise receiving sensitivity, antenna installation position, antenna scanning, antenna directional diagram and antenna polarization of the receiver.

[0009] Further, the relative position relationship of the two moving parties comprises running track and attitude of the radiation source and the receiver.

[0010] Further, the step of deducing and solving the multi-channel data file containing amplitude, phase and frequency shift according to the preset simulation rhythm comprises the following steps: according to the set scene parameters, the signal parameters, amplitude characteristics, phase characteristics and Doppler frequency shift of each radiation source reaching each receiving channel of the receiver at each time are solved under the preset simulation rhythm, and a corresponding data file is formed.

[0011] Further, the amplitude characteristics represent relative distance and antenna scanning characteristics, the phase characteristics represent incident angle relationship, and the Doppler frequency shift represents relative speed relationship.

[0012] Further, at the same time, if a plurality of radiation source signals in the scene reach the receiving channel of the receiver at the same time, an interleaved pulse sequence file is generated according to the pulse reaching order and the priority of the radiation source signals.

[0013] Further, the step of driving the plurality of general instruments to generate the plurality of coherent radio frequency signals comprises the following steps: the multi-channel coherent signal simulation system is self-checked and synchronized, and the deduced and solved data file is downloaded into the corresponding coherent signal simulation channel; and the multi-channel coherent signal simulation system is formed based on the plurality of general instruments.

[0014] Further, the injection receiver performs target function verification, including: triggering a signal to control the multi-channel coherent signal simulation system to simultaneously generate multiple coherent RF signals, and injecting the multiple coherent RF signals into each receiving channel of the receiver to complete target function verification; the target function verification includes direction finding verification and positioning verification.

[0015] A complex electromagnetic environment adaptability verification system comprises: An initialization setting module is configured to construct a typical test scene and set scene parameters, the scene parameters including radiation source related parameters, receiver related parameters, and relative position relationship between the two moving parties; A function verification module is configured to dynamically deduce a multi-channel data file containing amplitude, phase and frequency shift according to a preset simulation rhythm, drive multiple general instruments to generate multiple coherent RF signals, and inject the multiple coherent RF signals into the receiver to perform target function verification.

[0016] The present application has the following beneficial effects: The present application constructs a complex electromagnetic environment adaptability verification method and system based on dynamic scene planning and a multi-channel coherent signal simulation system, and the main beneficial effects are embodied in the following aspects: 1. The test scene can be flexibly planned, the coherent signal characteristics of multiple channels with amplitude, phase and frequency shift generated due to changes in position, posture, working mode, antenna scanning characteristics and signal style can be simulated, and the traversal test verification can be efficiently and quickly carried out; 2. The multi-channel coherent signal simulation system is constructed by using general instruments, the index accuracy is high, the stability is strong, the system can be freely and quickly reorganized according to the number of receiver channels, the flexibility is high, and the reconfigurability is strong. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a multi-channel coherent signal simulation system construction schematic diagram of embodiment 1 of the present application.

[0018] Figure 2 is a complex electromagnetic environment adaptability verification method flowchart of embodiment 1 of the present application.

[0019] Figure 3 is an interface planning schematic diagram of scene control software of embodiment 1 of the present application.

[0020] Figure 4 is a simulated multi-channel phase and amplitude schematic diagram of embodiment 1 of the present application.

[0021] Figure 5 is a simulated signal parameter characteristic schematic diagram of embodiment 1 of the present application. DETAILED DESCRIPTION

[0022] In order to make the technical features, objectives and effects of the present application clearer, the specific embodiments of the present application are described. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application, that is, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] Embodiment 1 The embodiment provides a complex electromagnetic environment adaptability verification method, which comprises the following steps: constructing a typical test scene and setting scene parameters, wherein the scene parameters comprise radiation source related parameters, receiver related parameters and relative position relationship of the two moving parties; dynamically deducing and solving a multi-channel data file containing amplitude, phase and frequency shift according to a preset simulation rhythm, driving multiple general instruments to generate multiple coherent RF signals, and injecting the receiver to execute target function verification.

[0024] Specifically, the complex electromagnetic environment adaptability verification method of the embodiment can be implemented by the following steps: Step 1: Plan the test scene Select the test scene area and set the scene parameters, wherein the scene parameters comprise radiation source related parameters, receiver related parameters and relative position relationship of the two moving parties.

[0025] Preferably, the radiation source related parameters comprise working frequency, working mode, antenna scanning, antenna pattern, antenna polarization and signal waveform parameters of the radiation source.

[0026] Preferably, the receiver related parameters comprise receiving sensitivity, antenna installation position, antenna scanning, antenna pattern and antenna polarization of the receiver.

[0027] Preferably, the relative position relationship of the two moving parties comprises the running track and attitude of the radiation source and the receiver.

[0028] Step 2: Scene deduction According to the set scene parameters, the signal parameters, amplitude characteristics, phase characteristics and Doppler frequency shift of each radiation source reaching each receiving channel of the receiver at each time are solved under a preset simulation rhythm, and the corresponding data file is formed.

[0029] Preferably, the amplitude characteristics represent the relative distance and antenna scanning characteristics, the phase characteristics represent the incidence angle relationship, and the Doppler frequency shift represents the relative speed relationship.

[0030] Step 3: Interleaved pulse sequence generation At the same time, if multiple radiation source signals in the scene arrive at the receiving channel of the receiver at the same time, an interleaved pulse sequence file is generated according to the pulse arrival order and the priority of the radiation source signal itself.

[0031] Step 4: Data file distribution The multi-channel coherent signal simulation system is self-checked and synchronized, and the data files obtained through deduction and solution are sent to the corresponding coherent signal simulation channels.

[0032] Preferably, if Figure 1 As shown in Figure 1, the multi-channel coherent signal simulation system is constructed using general instruments and has the advantages of high precision, large dynamics, and flexible reconfiguration.

[0033] Step 5: Start the test run The multi-channel coherent signal simulation system is controlled by trigger signals to simultaneously generate multi-channel coherent RF signals, and the multi-channel coherent RF signals are injected into the receiving channel interfaces of the receiver to complete the verification of direction finding, positioning and other functions.

[0034] Specifically, if Figure 2 As shown in the figure, this embodiment uses scene control software and multi-channel coherent signal simulation system to build complex electromagnetic environment adaptability verification conditions. Among them, the interface planning of the scene control software is as follows Figure 3 shown.

[0035] The multi-channel coherent signal simulation system is driven by the scene control software to generate multi-channel coherent RF signals, simulating multi-channel phase and amplitude. Figure 4 As shown, Figure 4 (a) is multi-channel phase simulation, Figure 4 (b) is a multi-channel amplitude simulation; the simulated signal parameter characteristics are as follows Figure 5 As shown, Figure 5 (a) PW 60us, PRI 300us, Figure 5 (b) PSK signal simulation.

[0036] In summary, the present invention plans dynamic scenarios, sets information such as the relative position relationship between the two moving parties, antenna scanning characteristics, and signal waveform parameters, and calculates multi-channel data files containing amplitude, phase, and frequency shift according to the beat. It drives the multi-channel coherent signal simulation system to generate multi-channel coherent RF signals with controlled amplitude, phase, and Doppler frequency shift according to the scenario, and injects them into the receiver under test, thereby completing the verification of functions such as direction finding and positioning.

[0037] Example 2 This embodiment is based on embodiment 1: This embodiment provides a complex electromagnetic environment adaptability verification system, including: The initialization setting module is configured to construct a typical test scene and set scene parameters, including radiation source related parameters, receiver related parameters and relative position relationship of the two moving parties. The function verification module is configured to dynamically deduce and solve a multi-channel data file containing amplitude, phase and frequency shift according to a preset simulation rhythm, drive multiple general instruments to generate multiple phase-related RF signals, and inject the receiver to execute target function verification.

[0038] Embodiment 3 This embodiment is based on Embodiment 1: This embodiment provides a computer device, including a memory and a processor, the memory stores a computer program, and the processor implements the complex electromagnetic environment adaptability verification method of Embodiment 1 when executing the computer program. The computer program can be in the form of source code, object code, executable file or some intermediate form, etc.

[0039] Embodiment 4 This embodiment is based on Embodiment 1: This embodiment provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the complex electromagnetic environment adaptability verification method of Embodiment 1. The computer program can be in the form of source code, object code, executable file or some intermediate form, etc. The storage medium includes any entity or device capable of carrying computer program code, recording medium, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content of the storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the storage medium does not include electrical carrier signals and telecommunication signals.

[0040] The above only describes the preferred embodiments of the present application, and it should be understood that the present application is not limited to the forms disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concepts described herein, by the above-mentioned teaching or related art or knowledge. The modifications and changes made by those skilled in the art without departing from the spirit and scope of the present application shall be within the scope of protection of the appended claims of the present application.

[0041] It is apparent that, for the method embodiments described previously, the steps of the methods have been described as being arranged in a particular order. However, it is to be appreciated that this is merely one example, and that the steps of the methods can be arranged in other orders or performed contemporaneously. Furthermore, it is to be appreciated that the embodiments described in the specification are merely preferred embodiments, and that the steps of the methods need not be performed in the order described.

Claims

1. A method for verifying adaptability to complex electromagnetic environments, characterized in that: include: Construct a typical test scenario and set scenario parameters, including radiation source related parameters, receiver related parameters, and the relative position relationship between the two moving parties; According to the preset simulation rhythm, multi-channel data files containing amplitude, phase and frequency shift are dynamically deduced and solved, and multiple general instruments are driven to generate multi-channel coherent RF signals, which are then injected into the receiver to perform target function verification.

2. A complex electromagnetic environment adaptability verification method according to claim 1, characterized in that: The radiation source related parameters include: the operating frequency, operating mode, antenna scanning, antenna pattern, antenna polarization and signal waveform parameters of the radiation source.

3. The method for verifying adaptability to complex electromagnetic environments according to claim 1, wherein: The receiver-related parameters include: receiver sensitivity, antenna installation position, antenna scanning, antenna pattern and antenna polarization.

4. The method for verifying adaptability to complex electromagnetic environments according to claim 1, wherein: The relative position relationship between the two moving parties includes: the running trajectory and posture of the radiation source and the receiver.

5. The method for verifying adaptability to complex electromagnetic environments according to claim 1, wherein: The method of dynamically calculating a multi-channel data file containing amplitude, phase and frequency shift according to a preset simulation beat includes: according to the set scene parameters, at the preset simulation beat, calculating the signal parameters, amplitude characteristics, phase characteristics and Doppler frequency shift of each radiation source reaching each receiving channel of the receiver at each moment to form a corresponding data file.

6. A complex electromagnetic environment adaptability verification method according to claim 5, characterized in that: The amplitude characteristic represents the relative distance and antenna scanning characteristics, the phase characteristic represents the incident angle relationship, and the Doppler frequency shift represents the relative speed relationship.

7. The method for verifying adaptability to complex electromagnetic environments according to claim 5, characterized in that: At the same time, if multiple radiation source signals in the scene arrive at the receiving channel of the receiver at the same time, an interleaved pulse sequence file is generated according to the pulse arrival order and the priority of the radiation source signal itself.

8. The method for verifying adaptability to complex electromagnetic environments according to claim 1, wherein: The method of driving multiple general-purpose instruments to generate multi-channel coherent radio frequency signals includes: performing self-test and synchronization on a multi-channel coherent signal simulation system, and sending the deduced and calculated data files to the corresponding coherent signal simulation channels; the multi-channel coherent signal simulation system is constructed based on multiple general-purpose instruments.

9. A complex electromagnetic environment adaptability verification method according to claim 8, characterized in that: The injection receiver performs target function verification, including: controlling the multi-channel coherent signal simulation system through a trigger signal to simultaneously generate multiple coherent radio frequency signals, and injecting them into each receiving channel of the receiver to complete the target function verification; the target function verification includes direction finding verification and positioning verification.

10. A complex electromagnetic environment adaptability verification system, characterized in that: include: An initialization setting module is configured to construct a typical test scenario and set scenario parameters, wherein the scenario parameters include radiation source related parameters, receiver related parameters, and the relative position relationship between the two moving parties; The functional verification module is configured to dynamically deduce and solve multi-channel data files containing amplitude, phase and frequency shift according to the preset simulation rhythm, drive multiple general instruments to generate multi-channel coherent RF signals, and inject them into the receiver to perform target functional verification.

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