Joint STAP-ISAR for non-cooperative target imaging in strong clutter

Author

Bacci, A. ; Gray, D. ; Martorella, Marco ; Berizzi, F.

Author_Institution

Dept. of Inf. Eng., Univ. of Pisa, Pisa, Italy

fYear

2013

fDate

April 29 2013-May 3 2013

Firstpage

1

Lastpage

5

Abstract

The aim of this work is to combine clutter suppression and ISAR processing in order to obtain well focused images of extended moving targets. A STAP ISAR based moving target imaging scheme for Multichannel SAR (M-SAR) in strong clutter environment is presented. This scheme consists of two main processing steps. The first step performs clutter mitigation and radar motion compensation by exploiting Space Time Adaptive Processing while the second step performs target motion compensation using ISAR processing. Two principal issues will be addressed. First a technique for applying ISAR processing after clutter mitigation is presented and then a suboptimal approach to clutter mitigation is proposed to overcome computational and statistical issues associated with estimation of clutter space time covariance matrix. Results of the processing applied to simulated data are provided in order to show the effectiveness of the proposed technique.

Keywords

covariance matrices; motion compensation; radar clutter; radar imaging; space-time adaptive processing; statistical analysis; synthetic aperture radar; target tracking; M-SAR; STAP-ISAR; clutter mitigation; moving target imaging scheme; multichannel SAR; noncooperative target imaging; radar motion compensation; space time adaptive processing; space time covariance matrix; statistical issues; Clutter; Covariance matrices; Imaging; Radar imaging; Spaceborne radar; Synthetic aperture radar;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar Conference (RADAR), 2013 IEEE

Conference_Location

Ottawa, ON

ISSN

1097-5659

Print_ISBN

978-1-4673-5792-0

Type

conf

DOI

10.1109/RADAR.2013.6585976

Filename

6585976