Title :
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
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;
Conference_Titel :
Antennas and Propagation (EuCAP), 2015 9th European Conference on
