Clutter covariance smoothing by subaperture averaging

Author

Fante, R.L. ; Barile, E.C. ; Guella, T.P.

Author_Institution

Mitre Corp., Bedford, MA

Volume

30

Issue

3

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

941

Lastpage

945

Abstract

Space-time processing has been proposed as an approach by which an airborne radar can adaptively detect small targets in the presence of ground clutter and jammers, provided the covariance matrix of the interference is available. One of the difficulties in estimating the covariance matrix is the need to obtain a sufficient number of independent samples, especially for high pulse-repetition-frequency (PRF) systems. It is shown here that this difficulty can be overcome by combining subaperture averaging, or spatial smoothing, of the received data with conventional range bin averaging

Keywords

aircraft instrumentation; jamming; matrix algebra; radar; radar clutter; signal detection; signal processing; adaptive processing; airborne radar; clutter covariance smoothing; covariance matrix; ground clutter; interference; jammers; pulse-repetition-frequency; range bin averaging; space-time processing; spatial smoothing; subaperture averaging; Adaptive arrays; Airborne radar; Antenna arrays; Clutter; Covariance matrix; Interference; Jamming; Radar antennas; Radar detection; Smoothing methods;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.303769

Filename

303769