Observability conditions for multiple signal direction finding and array sensor localization

Author

Lo, James T H ; Marple, Stanley L., Jr.

Author_Institution

Dept. of Math. & Stat., Maryland Univ., Baltimore, MD, USA

Volume

40

Issue

11

fYear

1992

fDate

11/1/1992 12:00:00 AM

Firstpage

2641

Lastpage

2650

Abstract

Three observability issues, which arise in narrowband signal direction-finding in the presence of array sensor location errors are described. Necessary and sufficient conditions for the phase delay ambiguity and the rank-2 ambiguity are presented. However, the characterization of the rank-n ambiguity is still an open problem and only a conjecture is given. Barring these ambiguities, the minimal numbers of known and unknown signals required for uniquely localizing the sources and sensors are determined under the assumption of no measurement noises

Keywords

array signal processing; observability; array processing; array sensor localization; multiple signal direction finding; narrowband signal direction-finding; observability conditions; phase delay ambiguity; rank-2 ambiguity; steering vectors; Delay estimation; Frequency estimation; Narrowband; Noise measurement; Observability; Phase estimation; Phased arrays; Sensor arrays; Sensor phenomena and characterization; Sufficient conditions;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.165651

Filename

165651