Separation of multiple specular components using new spectral estimation schemes

M. A. Hasan, Mahmood R. Azimi-Sadjadi, JoEllen Wilbur, Gerald J. Dobeck

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

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.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsAbinash C. Dubey, Robert L. Barnard, Colin J. Lowe, John E. McFee
Pages215-224
Number of pages10
StatePublished - Jan 1 1996
EventDetection and Remediation Technologies for Mines and Minelike Targets - Orlando, FL, USA
Duration: Apr 9 1996Apr 12 1996

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2765

Other

OtherDetection and Remediation Technologies for Mines and Minelike Targets
CityOrlando, FL, USA
Period4/9/964/12/96

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