GONG Bing; XU Yi-tao; LI Jia; LIU Zhong-jun

A Robust Autofocusing Approach for Estimating Directions-of-Arrival of Wideband Signals

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Author(s)

GONG Bing ^1,* XU Yi-tao ¹ LI Jia ¹ LIU Zhong-jun ¹

1. Institute of Communications Engineering PLA University of Sci. & Tech. Nanjing, China

* Corresponding author.

DOI: https://doi.org/10.5815/ijwmt.2012.04.05

Received: 20 Apr. 2012 / Revised: 5 Jun. 2012 / Accepted: 12 Jul. 2012 / Published: 15 Aug. 2012

Index Terms

Direction-of-arrival(DOA), wideband sources, focusing matrix, MUSIC, ESPRIT

Abstract

In this paper, we introduce a robust method for wideband DOA estimation which does not require any preliminary DOA estimation or calibration of the array during the whole estimating process with the performance similar to the autofocusing approach. Our method is based on the autofocusing approach and uses the ESPRIT algorithm during the narrowband processing stage. Meanwhile, we suggest the method of selecting the best focusing frequency which minimizes the mean square error.

Cite This Paper

GONG Bing,XU Yi-tao,LI Jia,LIU Zhong-jun,"A Robust Autofocusing Approach for Estimating Directions-of-Arrival of Wideband Signals", IJWMT, vol.2, no.4, pp.28-37, 2012. DOI: 10.5815/ijwmt.2012. 04.05

Reference

[1]M. Wax, T. Shan, and T. Kailath, “Spatio-temporal spectral analysis by eigenstructure method,” IEEE. Trans. Acoust., Speech, Signal Processing, vol. ASSP-32, pp. 817-827, Aug. 1984.

[2]H. Wang and M. Kaveh, “Coherent signal-subspace processing for the detection and estimation of angles of arrival of multiple wide-band sources,” IEEE. Trans. Acoust. Speech. Signal Processing, vol. ASSP-33, pp. 823-831, Aug. 1985.

[3]R. O. Schmidi, “Multiple emitter location and signal parameter estimation,” IEEE. Trans. Antennas., Propagat, vol. 34, pp. 276-280, Mar. 1986.

[4]E. Di Claudio and R. Parisi, “WAVES: weighted average of signal subspaces for robust wideband direction finding.” IEEE Trans. on Signal Processing, vo. 49, no. 10, pp.2179-2191.October 2001.

[5]Y. S. Yoon., L. M. Kaplan, and J. H. MeClellan, “TOPS: new DOA estimator for wideband signals,” IEEE Trans. on Signal Processing, vol.54, no.6, pp. 1977-1989, June 2006.

[6]P. Pal and P. P. Vaidyanathan, “A Novel autofocusing approach for estimating directions-of-arrival of wideband signals,” Asilomar: pp. 1663-1667，2009

[7]R. Roy and T. Kailath, “ESPRIT: estimation of signal parameters via rotational invariance techniques,” IEEE Trans. Acoust., Speech, Signal Processing, vol. 37, no. 7, pp.984-995, July 1989.

[8]H. Hung and M. Kaveh, “Focusing matrices for coherent signal-subspace processing,” IEEE Trans. Acoust.，Speech, Signal Processing, vol.36, no. 7, pp.1272-1281. July 1988.

[9]M. A. Doron and A. J. Weiss, “On focusing matrices for wide-band array processing,” IEEE Trans. on Signal Processing，vol.40, no. 6, pp.1295-1302. July 1988

International Journal of Wireless and Microwave Technologies (IJWMT)