View in EDS

Iterative angle-and-time-domain gating technique for time-reversal MUSIC imaging

Saved in:
Bibliographic Details
Title: Iterative angle-and-time-domain gating technique for time-reversal MUSIC imaging
Authors: Choi, Heedong, Ogawa, Yasutaka, Nishimura, Toshihiko, Ohgane, Takeo
Publisher Information: Elsevier
Subject Terms: Time reversal methodology, Multiple signal classification (MUSIC), Target detection, Radar imaging, Gating technique, Multistatic data matrix, info, musiq
Time: 547
Description: This study develops the preprocessing theory for time-reversal multiple signal classification (TR-MUSIC) imaging from the one-dimensional (time-domain) gating proposed in earlier papers to a two-dimensional one. Although the one-dimensional gating technique for TR-MUSIC mitigates the effect of noise as well as reduces the required number of antenna elements, the resulting image is subject to focusing errors when there are many targets in the gated region. In this paper, we propose a two-dimensional (angle-and-time-domain) gating technique based on the fast Fourier transform (FFT) and spatial FFT processing. By using these transforms and gating iteratively, we can reduce the number of targets to be detected at one time. The TR-MUSIC technique for the gated data provides more reliable images and precisely estimated coordinates compared with the previous work. (C) 2014 Elsevier B.V. All rights reserved.
Document Type: article in journal/newspaper
Language: English
Relation: http://hdl.handle.net/2115/58558
Availability: http://hdl.handle.net/2115/58558
Rights: undefined
Accession Number: edsbas.D0CD4329
Database: BASE
Description
Abstract:This study develops the preprocessing theory for time-reversal multiple signal classification (TR-MUSIC) imaging from the one-dimensional (time-domain) gating proposed in earlier papers to a two-dimensional one. Although the one-dimensional gating technique for TR-MUSIC mitigates the effect of noise as well as reduces the required number of antenna elements, the resulting image is subject to focusing errors when there are many targets in the gated region. In this paper, we propose a two-dimensional (angle-and-time-domain) gating technique based on the fast Fourier transform (FFT) and spatial FFT processing. By using these transforms and gating iteratively, we can reduce the number of targets to be detected at one time. The TR-MUSIC technique for the gated data provides more reliable images and precisely estimated coordinates compared with the previous work. (C) 2014 Elsevier B.V. All rights reserved.