Radar Target Echo Simulation System and Simulation Method Based on Electromagnetic Scattering Model

Abstract

The invention discloses a radar target echo simulation system based on an electromagnetic scattering model, and a simulation method thereof. The simulation method comprises the following steps: utilizing electromagnetic field simulation software, taking a precise three-dimensional geometric model of the radar target as input, setting radar frequency, space angle and like parameters, and computingradar target electromagnetic scattering characteristics through offline simulation; generating target electromagnetic scattering characteristic data under different frequencies and different space angles, and forming a scattering model database; when performing the radar target echo simulation, preloading the target electromagnetic scattering characteristic data to a simulator digital radio frequency memory unit (DRFM) according to the frequency and the orbit information of the radar test, wherein the DRFM performs real-time transmission on the target electromagnetic characteristic data underthe simulation frequency and the current simulation attitude through a table look-up way, and a signal processing unit controls the DRFM to accomplish frequency domain convolution of a radar emissionsignal and the target scattering characteristic data, and performs inverse Fourier transform processing on a convolution result to obtain a target time domain echo.

Description

technical field [0001] The invention relates to the technical field of radar simulation testing, in particular to a radar target echo simulation system based on an electromagnetic scattering model and a simulation method thereof. Background technique [0002] Radar echo signal simulation refers to the simulation of all electromagnetic environments within the radar observation range, including targets, clutter, active and passive interference, etc. It is widely used in the analysis and debugging of radar systems and the performance and indicators of radar systems Inspection and evaluation can provide digital, injection, and radiation analog signal environments for radar systems, and can also provide experimental electromagnetic environments for complex electromagnetic environment adaptability tests and evaluations of radar, seeker and other equipment. In the development process of radar equipment, it is necessary to carry out a large number of infield tests in the development...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a radar target echo simulation system and its simulation method based on the electromagnetic scattering model, which solves the shortcomings of the traditional method that the target echo simulation is not accurate and the simulated target is not targeted

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