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False target elimination method of 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: 2017-08-04
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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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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  • False target elimination method of distributed MIMO radar detection
  • False target elimination method of distributed MIMO radar detection
  • False target elimination method of 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 of distributed MIMO radar detection, belongs to the radar technology field and relates to distributed MIMO radar multi-target detection technology research. In the invention, the false target elimination method based on grid space search is adopted. The method is characterized by firstly, carrying out grid division on a space detection area, and through the grid space search, determining a multichannel detection unit and measurement; carrying out over-threshold judgment on all the grids in a detection plane and then detecting the detection plane; and then using the false target elimination method to carry out multiple iteration, successively eliminating influences of real targets on generated false targets, and finally acquiring a number of the real targets and general positions. Problems that because the false targets are generated, the real targets are submerged during an actual application; and detection correctness is reduced are effectively solved, and a MIMO radar is used to carry out correct detection on multiple targets.

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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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 ELECTRONIC SCI & TECH OF CHINA
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