Title :
Beamspace STAP for circular arrays
Author_Institution :
Dept. of Electr. & Comput. Eng., Lafayette Coll., Easton, PA, USA
Abstract :
Beamspace space-time adaptive processing for oversampled circular antenna arrays using refocusing and/or interpolating beamspace transformation is examined in this study. Three beamspace transformations that rely on array interpolation, phase adjustment, and Toeplitz induced mapping are compared in the context of pulse to pulse space-time adaptive processing. The paper presents recommendations regarding the applications of these algorithms in STAP and presents a comparison in terms of performance, computer processing time, and robustness.
Keywords :
Toeplitz matrices; antenna arrays; antenna theory; array signal processing; interpolation; space-time adaptive processing; Toeplitz induced mapping; array interpolation; beamspace STAP; beamspace space-time adaptive processing; interpolating beamspace transformation; oversampled circular antenna arrays; phase adjustment; pulse to pulse space-time adaptive processing; refocusing; Covariance matrix; Direction of arrival estimation; Discrete Fourier transforms; Filtering; Interpolation; Least squares approximation; Nonlinear filters; Phased arrays; Sensor arrays; Smoothing methods;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1999. IEEE
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-5639-x
DOI :
10.1109/APS.1999.789431
