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Similarity‐based multipath suppression algorithm for through‐wall imaging radar

Authors :
Mingyang Wang
Guolong Cui
Lingjiang Kong
Xiaobo Yang
Shisheng Guo
Source :
IET Radar, Sonar & Navigation. 11:1041-1050
Publication Year :
2017
Publisher :
Institution of Engineering and Technology (IET), 2017.

Abstract

This study deals with the multipaths suppression problem in a shielded environment with a through-wall imaging radar. The authors propose a similarity-based algorithm to eliminate the multipath ghosts for the scenario where some targets overlap with other targets’ multipath ghosts. Specifically, the authors first extract the connected domains of the radar image after binarisation, and then put them into a vector in ascending order based on the distances between their average coordinates and the array centre. Second, they divide the vector into two sub-vectors and calculate the distances between each sub-vector and all sensor locations along different paths. Third, they construct the similarity matrix using these two sub-vectors and further derive the matrix elements larger than the similarity threshold. Finally, decision rules are designed to eliminate the multipath ghosts without losing true targets. At the analyse stage, the authors assess the effectiveness of the proposed approach through simulation results showing its ability of well removing multipath ghosts.

Details

ISSN :
17518792
Volume :
11
Database :
OpenAIRE
Journal :
IET Radar, Sonar & Navigation
Accession number :
edsair.doi...........81f0723d45d7250cbe87b759a77cbfc5
Full Text :
https://doi.org/10.1049/iet-rsn.2016.0414