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

Choi, Heedong; Ogawa, Yasutaka; Nishimura, Toshihiko; Ohgane, Takeo

doi:10.1016/j.sigpro.2014.12.007


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

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/58558

Title:	Iterative angle-and-time-domain gating technique for time-reversal MUSIC imaging
Authors:	Choi, Heedong Browse this author
	Ogawa, Yasutaka Browse this author →KAKEN DB
	Nishimura, Toshihiko Browse this author →KAKEN DB
	Ohgane, Takeo Browse this author →KAKEN DB
Keywords:	Time reversal methodology
	Multiple signal classification (MUSIC)
	Target detection
	Radar imaging
	Gating technique
	Multistatic data matrix
Issue Date:	Jun-2015
Publisher:	Elsevier
Journal Title:	Signal processing
Volume:	111
Start Page:	39
End Page:	49
Publisher DOI:	10.1016/j.sigpro.2014.12.007
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.
Type:	article (author version)
URI:	http://hdl.handle.net/2115/58558
Appears in Collections:	情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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