Simultaneous nulling for monopulse array with partially adaptive weights

Author

Lee, Ta-Sung

Author_Institution

Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

42

Issue

7

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

928

Lastpage

935

Abstract

A new simple method is described for synthesizing low-sidelobe sum and difference patterns with partially adaptive weights. By partially adaptive, we mean that only part of the weights are adapted for simultaneous nulling. These adaptive weights are shared by the sum and difference channels, leading to a significant reduction in the number of variable attenuators/phase shifters used, as compared to the fully adaptive implementation. An objective function is derived that yields different configurations of the shared adaptive weights. Numerical examples are presented to ascertain the efficacy of the new method for both point and extended interference

Keywords

antenna phased arrays; antenna radiation patterns; interference suppression; radar antennas; attenuators/phase shifters; difference channels; difference patterns; extended interference; low-sidelobe patterns; monopulse array; monopulse radar; objective function; partially adaptive weights; point interference; simultaneous nulling; sum channels; sum patterns; Adaptive arrays; Apertures; Attenuators; Chebyshev approximation; Hardware; Interference; Phased arrays; Programmable control; Radar; Shape;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.299594

Filename

299594