Clutter semi-physical simulation test method and system based on test flight data
A technology of simulation test and flight test data, applied in the field of clutter semi-physical simulation test, can solve problems such as poor simulation effect, and achieve the effect of low cost, high fidelity, flexible and convenient test
Pending Publication Date: 2018-12-25
LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
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[0006] At present, most clutter simulations use computer simulation and mathematical statistical model simulation methods, but the simulation effect of this method is poor.
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[0035] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention.
[0036] In order to clearly illustrate the content of the invention of the present invention, the clutter semi-physical simulation test method and system based on flight test data of the present invention are introduced together in the following contents:
[0037] Step 1: Construct the clutter database based on the flight test data.
[0038] Organize a large amount of clutter data collected by the radar flight test, based on the three parameters of radar signal parameters (polarization mode, carrier frequency, beam width, waveform, etc.), topography, and flight parameters (aircraft altitude, beam incident angle, aircraft speed, etc.) , extract the effective baseband clutter signal, and f...
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The invention relates to a clutter semi-physical simulation test method based on test flight data. The simulation test method comprises the steps of: constructing a clutter database based on test flight data; clarifying simulation parameters according to a test scenario; extracting required clutter data from the clutter database according to the simulation parameters, and processing the clutter data to obtain a test flight clutter signal; obtaining an electromagnetic environment signal according to the test flight clutter signal and / or the radar signal and / or the interference signal; obtainingan occurrence signal of the electromagnetic environment signal according to the electromagnetic environment signal; and receiving the occurrence signal by a tested radar system to verify the functionand performance of the tested radar system. According to the clutter semi-physical simulation test method and system based on test flight data, common vector signal sources for system testing are used, signal level digital simulation is combined, and the use of various simulators is avoided. At the same time, the effective baseband clutter signal is extracted, the clutter data is realistically restored by using the large amount of clutter data collected by the radar in the test flight, and the test reliability is high.
Description
technical field [0001] The invention belongs to the technical field of radar semi-physical simulation technology, in particular to a clutter semi-physical simulation test method and system based on flight test data. Background technique [0002] Hardware-in-the-loop simulation is a simulation technology that includes both the actual physical system and the virtual mathematical model. It can provide radar systems with performance tests, index evaluations, and fault diagnosis under internal field conditions. [0003] In the prior art, there is a hardware-in-the-loop simulation method, in which the simulation of the electromagnetic environment is realized by using various simulators such as targets and clutter, and the cost is high, and the simulation fidelity is limited by the simulator. Although some simulators also support playback of field recorded data or data calculated before the test, they are less flexible and can only carry out simulation tests based on playback of fi...
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Login to View More IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 冯丹萍郭立安刘恒
Owner LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA