Title :
Pattern sidelobe level suppression on antenna array with arbitrary geometry by the IRLS algorithm
Author :
Dotlic, Igor ; Zejak, Aleksa
Author_Institution :
Inst. IMTEL, Belgrade, Yugoslavia
Abstract :
A novel method for suppressing antenna array radiation pattern sidelobes while keeping the main lobe width constant has been proposed. The method is based on the IRLS (iterative reweighted least squares) algorithm, which has found wide application in the field of radar pulse compression. The algorithm is not restricted by the array geometry and the mutual element coupling and has no limitations regarding the array excitation coefficients and array radiation pattern. In comparison with the ECF (envelope constrained filter) method, it showed much better results in sidelobe suppression. The algorithm implementation is simple and straightforward.
Keywords :
antenna arrays; antenna radiation patterns; antenna theory; array signal processing; iterative methods; least squares approximations; minimax techniques; antenna array radiation pattern sidelobe suppression; arbitrary array geometry; array excitation coefficients; constant main lobe width; envelope constrained filter; iterative reweighted least squares algorithm; minimax suppression; mutual element coupling; radar pulse compression; Antenna arrays; Antenna radiation patterns; Geometry; Iterative algorithms; Iterative methods; Least squares methods; Mutual coupling; Pulse compression methods; Radar antennas; Radar applications;
Conference_Titel :
EUROCON'2001, Trends in Communications, International Conference on.
Conference_Location :
Bratislava, Slovakia
Print_ISBN :
0-7803-6490-2
DOI :
10.1109/EURCON.2001.937790