NDLI: Broad-band DOA estimation and beamforming in multipath environment

Content Provider	IEEE Xplore Digital Library
Author	Indukumar, K.C. Reddy, V.U.
Copyright Year	1990
Description	Author affiliation: Dept. of Electr. Commun. Eng., Indian Inst. of Sci., Bangalore, India (Indukumar, K.C.; Reddy, V.U.)
Abstract	It is shown that the effective dimension of the signal subspace collapses in the presence of multipath and may be recovered with subarray averaging. The F-norm (Frobenius norm) of the cross-correlation matrix is proposed as a measure of the correlation between the impinging signals, and an upper bound on this norm, which depicts all the essential features of the true F-norm, is derived. Using this bound, how the correlation between the direct and multipath signals falls with progressive smoothing and how the rate is which it falls depends on the spacing and directions of the sources are studied. Computer simulations are provided to support theoretical predictions. To keep the notation and the analysis simple, the analysis was restricted to two-source models; however, the results extend to signal models with more than two sources.
Starting Page	532
Ending Page	537
File Size	461335
Page Count	6
File Format	PDF
DOI	10.1109/RADAR.1990.201086
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1990-05-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Direction of arrival estimation Array signal processing Delay Smoothing methods Covariance matrix Sensor arrays Narrowband Upper bound Decorrelation Jamming
Content Type	Text
Resource Type	Article

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