Algorithms for mitigating terrain-scattered interference

Author

Gabel, R.A. ; Kogon, S.M. ; Rabideau, D.J.

Author_Institution

Lincoln Lab., MIT, Lexington, MA, USA

Volume

11

Issue

1

fYear

1999

fDate

2/1/1999 12:00:00 AM

Firstpage

49

Lastpage

56

Abstract

This paper summarises a study of terrain-scattered interference (TSI) mitigation techniques, focusing on joint TSI mitigation and monostatic clutter nulling for airborne radars. It begins with an overview of TSI phenomenology and two-dimensional space-time adaptive processing (STAP) techniques for cancelling TSI. Two approaches for mitigating combined TSI and clutter are then examined. In the first approach, a sequence of two-dimensional adaptive filters is used. The first of these filters cancels TSI, while the second filter cancels monostatic clutter. In the second approach, a single, three-dimensional pre-Doppler STAP algorithm is used to cancel clutter and TSI simultaneously. Performance results for a representative system are shown to illustrate the trade-offs inherent in designing a mitigation approach

Keywords

adaptive filters; airborne radar; filtering theory; interference suppression; radar clutter; radar signal processing; space-time adaptive processing; two-dimensional digital filters; 2D STAP; 3D pre-Doppler STAP algorithm; airborne radar; clutter; interference cancellation; monostatic clutter nulling; performance results; space-time adaptive processing; terrain-scattered interference mitigation; two-dimensional adaptive filters;

fLanguage

English

Journal_Title

Electronics & Communication Engineering Journal

Publisher

iet

ISSN

0954-0695

Type

jour

DOI

10.1049/ecej:19990108

Filename

756352