Direction finding for wideband signals using an interpolated array

Benjamin Friedlander*, Anthony J. Weiss

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The authors derive a novel direction finding algorithm for multiple wideband signals received by an arbitrary array, and analyze its performance. Using an interpolation technique, a set of virtual arrays is generated, each for a different frequency band, having the same array manifold. The covariance matrices of these arrays are added to produce a composite covariance matrix. Direction of arrival (DOA) estimates are obtained by eigendecomposition of this composite covariance matrix using the narrowband MUSIC algorithm or its variants. By choosing the virtual arrays to be linear and equally spaced the root-MUSIC algorithm can be applied to this problem. Closed form expressions for the asymptotic covariance matrix of the DOA estimation errors are derived using perturbation analysis.

Original languageEnglish
Title of host publicationConference Record - Asilomar Conference on Circuits, Systems & Computers
PublisherPubl by Maple Press, Inc
Pages583-587
Number of pages5
ISBN (Print)0818624701
StatePublished - 1991
Externally publishedYes
Event25th Asilomar Conference on Signals, Systems & Computers Part 1 (of 2) - Pacific Grove, CA, USA
Duration: 4 Nov 19916 Nov 1991

Publication series

NameConference Record - Asilomar Conference on Circuits, Systems & Computers
Volume1
ISSN (Print)0736-5861

Conference

Conference25th Asilomar Conference on Signals, Systems & Computers Part 1 (of 2)
CityPacific Grove, CA, USA
Period4/11/916/11/91

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