Cramer-Rao Bound for Direction-of-Arrival Estimation Based on Moving Array

This paper studies the Cramer-Rao bound (CRB) for direction-of-arrival (DOA) estimation based on moving array. Two cases that may appear in some applications are discussed, namely the case with more extended antenna number than the source number (overdetermined case) and the opposite case (underdete...

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Bibliographic Details
Main Authors: Wu, Shaozhuang, Su, Qiao, Bai, Lu, Yang, Sihang, Yang, Chen, Ma, Zhiqing
Format: Conference Proceeding
Language:English
Subjects:
Antennas
Automation
Cramer-Rao Bound
Cramer-Rao bounds
Direction-of-arrival estimation
DOA estimation
Estimation
Information technology
moving array
Stochastic processes
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Summary:This paper studies the Cramer-Rao bound (CRB) for direction-of-arrival (DOA) estimation based on moving array. Two cases that may appear in some applications are discussed, namely the case with more extended antenna number than the source number (overdetermined case) and the opposite case (underdetermined case). Firstly, the CRB of DOA estimation for the moving array under the overdetermined case is derived. Then, we deduce the CRB of DOA estimation for the moving array under the underdetermined case and the scope of application for this CRB is also given. Several numerical examples for the derived CRBs are provided by considering both the overdetermined and underdetermined cases.
ISSN:2689-6621
DOI:10.1109/IAEAC59436.2024.10503607