High Resolution DOA Estimation Using Second-Order Differential of MUSIC Spectrum

Koichi ICHIGE; Yoshihisa ISHIKAWA; Hiroyuki ARAI

doi:10.1093/ietfec/e90-a.3.546

High Resolution DOA Estimation Using Second-Order Differential of MUSIC Spectrum

Koichi ICHIGE, Yoshihisa ISHIKAWA, Hiroyuki ARAI

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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.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E90-A No.3 pp.546-552

Publication Date: 2007/03/01

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Online ISSN: 1745-1337

DOI: 10.1093/ietfec/e90-a.3.546

Type of Manuscript: Special Section PAPER (Special Section on Multimedia and Mobile Signal Processing)

Category: Communications

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Koichi ICHIGE, Yoshihisa ISHIKAWA, Hiroyuki ARAI, "High Resolution DOA Estimation Using Second-Order Differential of MUSIC Spectrum" in IEICE TRANSACTIONS on Fundamentals, vol. E90-A, no. 3, pp. 546-552, March 2007, doi: 10.1093/ietfec/e90-a.3.546.
Abstract: 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.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e90-a.3.546/_p

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@ARTICLE{e90-a_3_546,
author={Koichi ICHIGE, Yoshihisa ISHIKAWA, Hiroyuki ARAI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={High Resolution DOA Estimation Using Second-Order Differential of MUSIC Spectrum},
year={2007},
volume={E90-A},
number={3},
pages={546-552},
abstract={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.},
keywords={},
doi={10.1093/ietfec/e90-a.3.546},
ISSN={1745-1337},
month={March},}

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TY - JOUR
TI - High Resolution DOA Estimation Using Second-Order Differential of MUSIC Spectrum
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 546
EP - 552
AU - Koichi ICHIGE
AU - Yoshihisa ISHIKAWA
AU - Hiroyuki ARAI
PY - 2007
DO - 10.1093/ietfec/e90-a.3.546
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E90-A
IS - 3
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - March 2007
AB - 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.
ER -