Direction-of-arrival estimation in partly calibrated subarray-based sensor arrays

被引：152

作者：

See, CMS ^{[1
]}

Gershman, AB

机构：

[1] DSO Natl Labs, Singapore 118230, Singapore

[2] McMaster Univ, Dept Elect & Comp Engn, Hamilton, ON L8S 4K1, Canada

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 2004年 / 52卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

DOA estimation; partly calibrated sensor arrays; RARE; subarray-based sensor arrays;

D O I：

10.1109/TSP.2003.821101

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The problem of direction-of-arrival (DOA) estimation in partly calibrated arrays is addressed. We assume that an array is composed of multiple well-calibrated subarrays of arbitrary known geometry, but there are imperfections between subarrays. We address the cases of unknown (or known with a certain error) intersubarray displacements, imperfect synchronization of subarrays; in time, unknown propagation channel mismatches-between subarrays, as well as combinations of these effects. A new subspace-based approach to DOA estimation is proposed, which is applicable to this general class of partly calibrated arrays. DOA identifiability issues for such arrays are discussed, and a relevant Cramer-Rao bound (CRB) is derived. Numerical examples illustrate the performance of the proposed estimators.

引用

页码：329 / 338

页数：10

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