Interrelated problems in space-time processing for SAR and ISAR

Author

Klemm, R.

Author_Institution

FGAN-FFM, Wachtberg, Germany

Volume

145

Issue

5

fYear

1998

fDate

10/1/1998 12:00:00 AM

Firstpage

297

Lastpage

302

Abstract

Two applications of space-time adaptive processing are addressed: clutter rejection for ISAR by a moving radar, and jammer cancellation for broadband radar like SAR. It is shown that for both problems the space-time covariance matrix has a similar form. The effect of space-time FIR filtering on the resolution capability of ISAR and SAR is analysed. It appears that distortions of the point spreading function mainly appear close to the clutter (or jammer) notches of the adaptive filter, i.e. in areas where the filter transfer function is not constant with Doppler (angle)

Keywords

FIR filters; adaptive filters; covariance matrices; filtering theory; image resolution; interference suppression; jamming; optical transfer function; phased array radar; radar clutter; radar imaging; radar resolution; radar signal processing; space-time adaptive processing; synthetic aperture radar; Doppler; ISAR imaging; SAR; adaptive filter; angle; broadband radar; clutter notches; clutter rejection; filter transfer function; interference suppression; jammer cancellation; jammer notches; moving radar; phased array radar; point spreading function; resolution; space-time FIR filtering; space-time adaptive processing; space-time covariance matrix;

fLanguage

English

Journal_Title

Radar, Sonar and Navigation, IEE Proceedings -

Publisher

iet

ISSN

1350-2395

Type

jour

DOI

10.1049/ip-rsn:19982217

Filename

741986