Title :
On conditions for the rank restoration in forward/backward spatial smoothing
Author_Institution :
Sch. of Inf. & Commun. Eng., Dongyang Univ., Kyungbook, South Korea
fDate :
11/1/2002 12:00:00 AM
Abstract :
The forward/backward spatial smoothing is an efficient technique for obtaining a modified covariance matrix of full rank in the presence of coherent sources. The condition for the full-rank restoration was presented in an earlier paper by Pillai and Kwon (1989). It, however, is incorrect. We present the exact condition. It is shown that the forward/backward spatial smoothing results in the full-rank restoration with probability 1.
Keywords :
covariance matrices; probability; smoothing methods; coherent sources; exact condition; forward/backward spatial smoothing; full-rank restoration; modified covariance matrix; parameter estimation; probability; rank restoration; Apertures; Covariance matrix; Multiple signal classification; Parameter estimation; Signal processing; Signal restoration; Smoothing methods; Spatial resolution; Sufficient conditions;
Journal_Title :
Signal Processing, IEEE Transactions on
DOI :
10.1109/TSP.2002.804075
