DocumentCode :
697824
Title :
Sequential estimation of the range and the bearing using the Zero-Forcing Music approach
Author :
El korso, Mohammed Nabil ; Bouleux, Guillaume ; Boyer, Remy ; Marcos, Sylvie
Author_Institution :
Lab. des Signaux et Syst., SUPELEC, Gif-sur-Yvette, France
fYear :
2009
fDate :
24-28 Aug. 2009
Firstpage :
1404
Lastpage :
1408
Abstract :
We consider the range and bearing estimation of near-field narrow-band sources from noisy data observed across a passive sensor array. For some difficult scenarios as for correlated and largely spaced sources at low SNRs, or correlated and closely spaced sources, the Near FieLd (NFL) version of the MUltiple SIgnal Classification (MUSIC) algorithm is no longer reliable. In this paper, we adapt and extend the sequential Zero-Forcing MUSIC (ZF-MUSIC) algorithm, which avoids the delicate search of multiple maxima, to the NFL context. In order to compare the NFL ZF-MUSIC with the Second-Order Statistics Weighted Prediction (SOS-WP) algorithm, we assumed an uniform sampling in the spatial domain. However, the proposed algorithm can be exploited for general array geometries. Finally numerical simulations show that the variance of the proposed algorithm achieves the Cram é r-Rao Bound (CRB) in difficult scenarios and for sufficient Signal to Noise Ratio (SNR).
Keywords :
array signal processing; direction-of-arrival estimation; sequential estimation; signal classification; signal sampling; SOS-WP algorithm; bearing estimation; general array geometry; multiple signal classification; near-field narrow-band source; passive sensor array; second-order statistics weighted prediction; sequential ZF-MUSIC algorithm; sequential estimation; zero-forcing MUSIC algorithm; Arrays; Estimation; Multiple signal classification; Prediction algorithms; Signal processing algorithms; Signal to noise ratio; Standards;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing Conference, 2009 17th European
Conference_Location :
Glasgow
Print_ISBN :
978-161-7388-76-7
Type :
conf
Filename :
7077396
Link To Document :
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