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Efficient computation of the music algorithm as applied to a low-angle elevation estimation problem in a severe multipath environment

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1 Author(s)
Attia, E. ; Interspec, Inc., Conshohocken, Pennsylvania

Subarray spatial smoothing of the covariance matrix decoheres a signal from its multipath. Since computations grow as fast as M3, where M is the subarray size, we should keep M to a minimum. Since the accuracy is found to improve as M increases and quickly asymptotes around a knee point, we suggest to choose M right after that point and use spatial smoothing to speed up MUSIC in general, even if signal coherence is of no concern. We also introduce a root finding algorithm working on a 2(M-1)th order polynomial as an efficient way of finding the peaks of the super resolution pattern.

Published in:

Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '87.  (Volume:12 )

Date of Conference:

Apr 1987