High Resolution DOA Estimation Using Second-Order Differential of MUSIC Spectrum(Communications,<Special Section>Multimedia and Mobile Signal Processing)
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概要
- 論文の詳細を見る
This paper presents a simple but high resolution DOA estimation method using second-order differential of MUSIC spectrum. MUSIC method is paid attention as one of "Superresolution" DOA estimation methods because of their brilliant characteristics, however MUSIC also has the problem of estimation accuracy in severe environments like low SNR, small number of snapshots, or incident waves from closely-spaced angles. Especially the case of two or more incident waves from closely-spaced angles, MUSIC often fails in making spectrum peaks that leads inaccurate DOA estimation. We pay attention to the fact that the second-order differential of MUSIC spectrum makes negative peaks around the original DOAs even when MUSIC spectrum does not make peaks there. We try to estimate DOAs not by MUSIC spectrum but by the second-order differential of the MUSIC spectrum, and to find its peaks for being estimated DOAs. The performance of the present method is evaluated in compared with MUSIC and Root-MUSIC methods through computer simulations and experiments.
- 社団法人電子情報通信学会の論文
- 2007-03-01
著者
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ARAI Hiroyuki
Department of Biotechnology, The University of Tokyo
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Arai Hiroyuki
Yokohama National Univ. Yokohama‐shi Jpn
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Arai Hiroyuki
Yokohama National Univ.
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ICHIGE Koichi
Department of Electrical & Computer Engineering, Yokohama National University
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Arai Hiroyuki
Department Of Electrical And Computer Engineering Yokohama National University
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ISHIKAWA Yoshihisa
Department of Electrical and Computer Engineering, Yokohama National University
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Ichige Koichi
Yokohama National Univ. Yokohama‐shi Jpn
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Ishikawa Yoshihisa
Department Of Electrical And Computer Engineering Yokohama National University:(present Office)sony
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Arai Hiroyuki
Department Of Biotechnology The University Of Tokyo
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Arai Hiroyuki
Department Of Applied Chemistry Tokai University
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ARAI Hiroyuki
Department of Electrical and Computer Engineering, Yokohama National University
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