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A False Target Elimination Method for Distributed MIMO Radar Detection

A false target and radar detection technology, applied in the radar field, can solve the problems of reducing detection accuracy, submerging real targets, and submerging real targets, etc., achieving the effect of simple implementation, small calculation amount of algorithm, and guaranteed accuracy

Active Publication Date: 2020-03-27
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to aim at the defects existing in MIMO radar detection technology, research and design a false target elimination method for distributed MIMO radar detection, and solve the problem that the real target is submerged due to the existence of false targets during MIMO radar detection, and the detection accuracy is low question
This method effectively solves the problem that the false target submerges the real target and reduces the detection accuracy in practical applications, so as to realize the correct detection of multiple targets using MIMO radar

Method used

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  • A False Target Elimination Method for Distributed MIMO Radar Detection
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  • A False Target Elimination Method for Distributed MIMO Radar Detection

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Embodiment Construction

[0041] The present invention mainly adopts the method of computer simulation for verification, and all steps and conclusions are verified correctly on MATLAB-R2012a. The specific implementation steps are as follows:

[0042] Step 1. Use the radar to transmit orthogonal signals, and separate the received target echo signals containing multiple channels through matched filtering

[0043] For the space coordinate system position is (x k ,y k ) (k=1,...,K) target reflection echo, K is the number of targets, located at The transmit radar T i and located at The receiving radar R j The formed receiving channel lk(l=1,....,L)(L=M×N) receives the echo signal as y lk (t),

[0044]

[0045] In the above formula, E is the total energy of the transmitting beam, N is the number of transmitting radars, α lk is the complex reflection coefficient of the target in the lk channel, s ik is the original transmitted signal from the i-th transmitting radar to the k-th target, n lk (t)...

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Abstract

The invention discloses a false target elimination method for distributed MIMO radar detection, belongs to the field of radar technology, and relates to the research on distributed MIMO radar multi-target detection technology. The present invention adopts the false target elimination method based on the grid space search, first divides the space detection area into grids, and determines the multi-channel detection unit and measurement through the grid space search; performs threshold crossing on all grids in the detection plane After the judgment, the detection plane is detected; then the false target elimination method is used to perform multiple iterations, and the influence of the real target on the generated false target is eliminated in turn, and finally the number of real targets and their approximate positions are obtained. It effectively solves the problem that false targets submerge real targets and reduce detection accuracy in practical applications, thereby realizing the correct detection of multiple targets using MIMO radar.

Description

technical field [0001] The invention belongs to the technical field of radar, and relates to the research on distributed MIMO radar multi-target detection technology. Background technique [0002] With the advancement of electronic information technology, radar and anti-radar technology are advancing by leaps and bounds. Seeking new power and technical approaches to improve the detection performance of modern radar has become the goal that radar designers have been pursuing. Traditional radar can no longer meet modern needs. With the rapid development of Multiple-Input Multiple-Output (MIMO) communication, the concept of MIMO radar has been proposed, which has become a research hotspot in the radar field and has attracted more and more attention from scholars. Compared with traditional radars, MIMO radar systems have the characteristics of being able to detect targets from different directions, and can reduce target RCS (target radar cross-sectional area) scintillation. Big...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/36G01S7/40
CPCG01S7/36G01S7/4052
Inventor 易伟陈璐孙智付月李洋漾李帅
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA