NDLI: High resolution spectral method for spatial discrimination of closely spaced correlated sources

Content Provider	IEEE Xplore Digital Library
Author	Clergeot, H. Ouamri, A. Tressens, S.
Copyright Year	1985
Description	Author affiliation: ENSET-LESIR, Cachan, France (Clergeot, H.)
Abstract	The precision on the estimation of the angles of arrival of plane waves on a linear array of N sensors is altered either when the angular separation between sources is small, or when the sources are correlated. This may be connected to the ill conditionning of the covariance matrix in such conditions. This last point is discussed in the case of two sources: the expression of the eigenvalues is derived and we demonstrate how the use of spatial averaging may be used to improve the robustness of the estimation. The influence of the noise on estimation is then considered. The average distribution of the noise eigenvalues for finite time estimation is derived and used for a test on the number of sources. The perturbation on the signal eigenvectors is then computed and used to get the variance on the estimation of source locations.
Starting Page	560
Ending Page	563
File Size	78347
Page Count	4
File Format	PDF
DOI	10.1109/ICASSP.1985.1168366
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1985-04-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spatial resolution Sensor arrays Frequency estimation Covariance matrix Eigenvalues and eigenfunctions Additive noise Samarium Noise robustness Testing Amplitude estimation
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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