A phased array calibration technique using eigenstructure methods

Author

Brown, G. ; McClellan, J. ; Holder, E.

Author_Institution

Georgia Tech. Res. Inst., Atlanta, GA, USA

fYear

1990

fDate

7-10 May 1990

Firstpage

304

Lastpage

308

Abstract

An eigenstructure-based method for direction finding in the presence of angularly dependent sensor phase and gain perturbations is presented. One application for this technique is the calibration of a radar array degraded by mutual coupling effects. The method simultaneously computes an estimate of the angle of arrival of a single source and calibrates the array for that specific angle. A calibration curve for a range of angles is derived by using polynomial interpolation to fit a small set of measured calibration points. Since the technique is a variation of the MUSIC processor for angle estimation, it is applicable to both uniform and nonuniform linear array configurations

Keywords

antenna phased arrays; calibration; eigenvalues and eigenfunctions; radar antennas; radio direction-finding; MUSIC processor; angle of arrival; angularly dependent sensor; direction finding; eigenstructure methods; gain perturbations; nonuniform linear array; phase perturbations; phased array calibration technique; polynomial interpolation; radar array; uniform linear array; Calibration; Computer errors; Degradation; Multiple signal classification; Mutual coupling; Phased arrays; Polynomials; Radar applications; Sensor arrays; Sensor phenomena and characterization;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar Conference, 1990., Record of the IEEE 1990 International

Conference_Location

Arlington, VA

Type

conf

DOI

10.1109/RADAR.1990.201182

Filename

201182