Joint DOA estimation and phase calibration of linear equispaced (LES) arrays

Author

Wylie, Marilynn P. ; Roy, Sumit ; Messer, Hagit

Author_Institution

Dept. of Electr. Eng., Pennsylvania Univ., Philadelphia, PA, USA

Volume

42

Issue

12

fYear

1994

fDate

12/1/1994 12:00:00 AM

Firstpage

3449

Lastpage

3459

Abstract

The important problem of self-calibration of phased arrays for unknown phase errors in conjunction with their use in high-resolution direction of arrival (DOA) estimation is addressed. The authors consider the canonical (and widely used) linear equispaced (LES) array with a constant but unknown phase response and develop an algorithm that does not require any a priori knowledge of the direction of arrival of a signal. Analytical results are presented regarding estimator performance that are verified by a representative body of simulations. In addition, estimator performance is compared with a constrained Cramer-Rao lower bound (CRLB)

Keywords

calibration; direction-of-arrival estimation; phase estimation; DOA estimation; LES arrays; constrained Cramer-Rao lower bound; direction of arrival; estimator performance; linear equispaced arrays; phase calibration; phase response; phased arrays; unknown phase errors; Analytical models; Calibration; Degradation; Direction of arrival estimation; Geometry; Performance analysis; Phase estimation; Phased arrays; Sensor arrays; Signal to noise ratio;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.340779

Filename

340779