Cramr-Rao bound for DOA estimation exploiting multiple frequency pairs

Abstract

The Cramr-Rao bound (CRB) for direction of arrival (DOA) estimation exploiting both auto-correlation and cross-correlation information within multiple frequencies of the received array signals is derived. It provides a tighter bound than the existing CRB for the dual-frequency scenario. For the multiple frequencies, it is much lower than its dual-frequency counterpart, and also exists for a greater number of sources, thereby validating that exploiting multiple frequency pairs can improve both estimation accuracy and target resolvability.

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Authors/Creators:	Liang, Y. Cui, W. Shen, Q. Liu, W. https://orcid.org/0000-0003-2968-2888 Wu, H.
Copyright, Publisher and Additional Information:	© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Reproduced in accordance with the publisher's self-archiving policy.
Keywords:	Direction-of-arrival (DOA) estimation; CramerRao bound (CRB); multiple frequencies; underdetermined
Dates:	Accepted: 1 June 2021 Published (online): 9 June 2021 Published: 9 June 2021
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield)
Depositing User:	Symplectic Sheffield
Date Deposited:	14 Jun 2021 07:21
Last Modified:	09 Jun 2022 00:38
Status:	Published
Publisher:	Institute of Electrical and Electronics Engineers (IEEE)
Refereed:	Yes
Identification Number:	https://doi.org/10.1109/lsp.2021.3088051

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Cramr-Rao bound for DOA estimation exploiting multiple frequency pairs

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