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Radar target echo simulation system based on electromagnetic scattering model, and simulation method thereof

A radar target and echo simulation technology, which is applied to radio wave measurement systems and instruments, can solve the problems of untargeted simulated targets and inaccurate target echo simulation, so as to solve unrealistic problems, improve credibility, The effect of reducing test costs

Active Publication Date: 2019-01-18
NO 8511 RES INST OF CASIC
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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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  • Radar target echo simulation system based on electromagnetic scattering model, and simulation method thereof
  • Radar target echo simulation system based on electromagnetic scattering model, and simulation method thereof
  • Radar target echo simulation system based on electromagnetic scattering model, and simulation method thereof

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] 1. Composition of radar target echo simulation system based on electromagnetic scattering model

[0024] The radar target echo simulation system based on the electromagnetic scattering model consists of a transmitting antenna, a transmitting front end, an up-conversion unit, a frequency synthesis unit, a target electromagnetic characteristic database, a digital frequency storage unit, a signal processing unit, a main control unit, a frequency measurement receiver, and a down-conversion unit. Composed of frequency conversion unit, receiving front end, and receiving antenna, as attached figure 1 shown.

[0025] The target electromagnetic characteristic database is composed of a host computer and database software, and is used to store target electromagnetic scattering characteristic data obtained by off-line electromagnetic field numerical simulation. ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40
CPCG01S7/4052
Inventor 查丽萍王鑫梁斌陈飞成继隆王超李博文
Owner NO 8511 RES INST OF CASIC
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