Time-varying STAP for nonstationary hot clutter cancellation

Author

Fabrizio, Giuseppe A. ; Farina, A.

Author_Institution

Nat. Security & ISR Div., DSTO, Edinburgh, SA, Australia

fYear

2014

fDate

4-9 May 2014

Firstpage

6062

Lastpage

6066

Abstract

This paper addresses the problem of mitigating non-stationary diffusely scattered multipath interference or “hot clutter” by space-time adaptive processing (STAP) in radar systems that use a multi-channel receive antenna array. A computationally efficient time-varying (TV) fast-time STAP algorithm that can effectively cancel hot clutter during the coherent processing interval (CPI) while simultaneously preserving the Doppler spectrum characteristics of the ordinary backscattered “cold clutter” is proposed. The TV-STAP method is compared with several benchmark techniques in a numerical study simulating aircraft and ship detection in over-the-horizon (OTH) radar.

Keywords

Doppler radar; adaptive antenna arrays; aircraft; interference suppression; numerical analysis; radar antennas; radar clutter; radar detection; radar receivers; receiving antennas; ships; space-time adaptive processing; CPI; Doppler spectrum characteristics; OTH radar system; TV; aircraft; coherent processing interval; multichannel receive antenna array; nonstationary diffusely scattered multipath interference mitigation; nonstationary hot clutter cancellation; numerical study simulation; ordinary backscattered cold clutter; over-the-horizon radar system; ship detection; space-time adaptive processing; time-varying fast-time STAP algorithm; Clutter; Doppler effect; Radar antennas; Radar applications; Spaceborne radar; Vectors; Hot Clutter; OTH Radar; STAP;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing (ICASSP), 2014 IEEE International Conference on

Conference_Location

Florence

Type

conf

DOI

10.1109/ICASSP.2014.6854768

Filename

6854768