Wall clutter mitigation using a modified subspace projection method for non-parallel measurement through-the-wall radar imaging

Author

Youngjoon Lim ; Minyoung Yoon ; Sumin Yun ; Hyunwook Jun ; Sungtek Kahng ; Sangwook Nam

Author_Institution

Dept. of Electr. & Comput. Eng., Seoul Nat. Univ., Seoul, South Korea

fYear

2015

Firstpage

1

Lastpage

2

Abstract

In this paper, a modified subspace projection method for non-parallel measurement through-the-wall radar imaging is proposed. The proposed modified subspace projection method includes equivalent time delay and normalization to remove wall clutter. Synthetic data are obtained using a finite-difference time-domain forward solver to verify the validity of the proposed method. The target-to-clutter ratio of the delayed-sum migration image after the proposed method was improved 21.6 dB compared to the conventional subspace projection method.

Keywords

delays; finite difference time-domain analysis; radar clutter; radar imaging; delayed-sum migration image; equivalent time delay; finite-difference time-domain forward solver; modified subspace projection method; nonparallel measurement through-the-wall radar imaging; synthetic data; target-to-clutter ratio; wall clutter mitigation; Antenna measurements; Clutter; Delay effects; Filtering; Radar imaging; Signal processing; Time-domain analysis; Through-the-wall radar imaging (TWRI); subspace projection method; wall clutter mitigation;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EuCAP), 2015 9th European Conference on

Type

conf

Filename

7228474