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Proceedings Paper

Separation of multiple specular components using new spectral estimation schemes
Author(s): M. A. Hasan; Mahmood R. Azimi-Sadjadi; JoEllen Wilbur; Gerald J. Dobeck
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Paper Abstract

The problem of estimating multiple time delays in the presence of colored noise is considered in this paper. This problem is first converted to a frequency estimation problem by using the discrete Fourier transform. Then, sample lagged covariance matrices of the resulting signal are computed and studied in terms of their eigen-structure. These matrices are shown to be effective in extracting bases for the signal and noise subspace. MUSIC and Pencil-based frequency estimators are then derived using these subspaces. The effectiveness of the method is demonstrated on simulated backscatter which involves estimation of multiple specular components of the acoustic backscattered return from an underwater target.

Paper Details

Date Published: 31 May 1996
PDF: 10 pages
Proc. SPIE 2765, Detection and Remediation Technologies for Mines and Minelike Targets, (31 May 1996); doi: 10.1117/12.241224
Show Author Affiliations
M. A. Hasan, Colorado State Univ. (United States)
Mahmood R. Azimi-Sadjadi, Colorado State Univ. (United States)
JoEllen Wilbur, Naval Surface Warfare Ctr. (United States)
Gerald J. Dobeck, Naval Surface Warfare Ctr. (United States)


Published in SPIE Proceedings Vol. 2765:
Detection and Remediation Technologies for Mines and Minelike Targets
Abinash C. Dubey; Robert L. Barnard; Colin J. Lowe; John E. McFee, Editor(s)

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