Title :
Time-varying STAP for nonstationary hot clutter cancellation
Author :
Fabrizio, Giuseppe A. ; Farina, A.
Author_Institution :
Nat. Security & ISR Div., DSTO, Edinburgh, SA, Australia
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;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2014 IEEE International Conference on
Conference_Location :
Florence
DOI :
10.1109/ICASSP.2014.6854768
