Title :
Mitigating effects on STAP processing caused by an inclined array
Author :
Borsari, Geordi K.
Author_Institution :
Lincoln Lab., MIT, Lexington, MA, USA
Abstract :
This paper presents several techniques for mitigating the effects of an inclined linear array on STAP algorithms. A new technique, termed Doppler Warping is shown to completely mitigate the effects of the array inclination on the STAP algorithm by shifting the Doppler filters to track the Doppler frequency variation of clutter over range. After establishing the effects of array inclination on STAP algorithms, several techniques are presented to reduce the array inclination effects. Doppler Warping is shown to be computationally very inexpensive and to completely mitigate the effects of array inclination. Covariance analysis results are presented
Keywords :
Doppler effect; adaptive radar; adaptive signal processing; airborne radar; array signal processing; covariance analysis; direction-of-arrival estimation; filtering theory; interference suppression; linear antenna arrays; radar clutter; radar signal processing; Doppler Warping; Doppler filters shifting; Doppler frequency variation tracking; STAP algorithms; STAP processing; airborne early warning radar; array inclination effects reduction; clutter; clutter suppression; covariance analysis results; inclined linear array; Azimuth; Doppler radar; Ear; Frequency; Laboratories; Military aircraft; Nonlinear filters; Radar clutter; Radar scattering; Space stations;
Conference_Titel :
Radar Conference, 1998. RADARCON 98. Proceedings of the 1998 IEEE
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-4492-8
DOI :
10.1109/NRC.1998.677990
