Title :
Nonlinear STAP processing
Author :
Farina, A. ; Lombardo, P. ; Pirri, M.
Author_Institution :
Syst. Anal. Group, Alenia Marconi Syst., Rome, Italy
fDate :
2/1/1999 12:00:00 AM
Abstract :
The paper deals with the cancellation of clutter echoes in modern airborne early warning (AEW) radar systems equipped with digital beam-forming. The performances of reduced degrees of freedom (DoF) GLRT (generalised likelihood ratio test) detectors and the previously conceived nonlinear detector are compared. The nonlinear detector is demonstrated to be a compromise solution between computational requirements and detection performance. Moreover, it shows much higher robustness to nonhomogeneous clutter. A MATLAB-based software tool is used to show the results that can be achieved using live data recorded by the experimental radar AAFTE (Adaptive Array Flight Test Equipment) of the US Naval Research Laboratory
Keywords :
adaptive antenna arrays; adaptive radar; airborne radar; array signal processing; interference suppression; military radar; radar clutter; radar computing; radar detection; radar signal processing; software tools; space-time adaptive processing; Adaptive Array Flight Test Equipment; GLRT detectors; MATLAB-based software tool; US Naval Research Laboratory; airborne early warning radar systems; clutter echoes cancellation; computational requirements; degrees of freedom; detection performance; digital beam-forming; experimental radar; generalised likelihood ratio test; live data recorded; nonhomogeneous clutter; nonlinear STAP processing; nonlinear detector;
Journal_Title :
Electronics & Communication Engineering Journal
DOI :
10.1049/ecej:19990107
