Identifiability issues for rotationally invariant arrays

Author

Swindlehurst, A. Lee

Author_Institution

Dept. of Electr. & Comput. Eng., Brigham Young Univ., Provo, UT, USA

fYear

1991

fDate

4-6 Nov 1991

Firstpage

312

Abstract

The ESPRIT algorithm provides a computationally efficient approach for direction of arrival (DOA) estimation in situations where the sensor array is composed of two identical translated subarrays. The subarrays need not be calibrated in order to obtain the DOA estimates. The problem of DOA estimation using sensor arrays composed of two identical, uncalibrated, and rotated subarrays is considered. It is shown that, unlike ESPRIT, such rotationally invariant arrays do not provide an identifiable parameterization of the problem. Unique DOA estimates are not possible without additional calibration information when more than one signal is presented

Keywords

calibration; parameter estimation; signal processing; DOA estimates; ESPRIT algorithm; array processing; calibration information; direction of arrival; identical uncalibrated rotated subarrays; rotationally invariant arrays; sensor array; Azimuth; Calibration; Data models; Direction of arrival estimation; Helium; Information analysis; Narrowband; Phased arrays; Sensor arrays; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 1991. 1991 Conference Record of the Twenty-Fifth Asilomar Conference on

Conference_Location

Pacific Grove, CA

ISSN

1058-6393

Print_ISBN

0-8186-2470-1

Type

conf

DOI

10.1109/ACSSC.1991.186463

Filename

186463