Adaptive polarimetric target detection with coherent radar. II. Detection against non-Gaussian background

Author

Lombardo, P. ; Pastina, D. ; Bucciarelli, T.

Author_Institution

INFOCOM Dept., Rome Univ., Italy

Volume

37

Issue

4

fYear

2001

fDate

10/1/2001 12:00:00 AM

Firstpage

1207

Lastpage

1220

Abstract

For pt. I see ibid., vol. 37, no. 4, pp. 1194-1206 (2001).This paper presents the derivation of a polarimetric coherent adaptive scheme to detect a radar target against a non-Gaussian background. This completes the results presented in Part I for the Gaussian background. A Texture Free-Generalized Likelihood Ratio Test (TF-GLRT) detector is derived that exploits the polarimetric characteristics of the received radar echoes to improve the detection performance. The proposed polarimetric detector is shown to have Constant False Alarm Rate (CFAR) when operating against compound-Gaussian clutter with unknown parameters. Its performance is fully characterized by both theoretical analysis and simulation. Moreover, the application to recorded radar data demonstrates the performance improvement achievable in practice

Keywords

adaptive signal detection; covariance matrices; maximum likelihood detection; probability; radar clutter; radar detection; radar polarimetry; search radar; CFAR; adaptive polarimetric target detection; coherent radar; compound-Gaussian clutter; joint probability density function; non-Gaussian background; normalized clutter covariance matrix; received radar echoes; texture free-generalized likelihood ratio test; Analytical models; Associate members; Detectors; Object detection; Performance analysis; Radar applications; Radar clutter; Radar detection; Radar polarimetry; Testing;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.976960

Filename

976960