Phase-only adaptive nulling with a genetic algorithm

Author

Haupt, Randy L.

Author_Institution

DREE, US Air Force Acad., Colorado Springs, CO, USA

Volume

45

Issue

6

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

1009

Lastpage

1015

Abstract

This paper describes a new approach to adaptive phase-only nulling with phased arrays. A genetic algorithm adjusts some of the least significant bits of the beam steering phase shifters to minimize the total output power. Using small adaptive phase values results in minor deviations in the beam steering direction and small perturbations in the sidelobe level in addition to constraining the search space of the genetic algorithm. Various results are presented to show the advantages and limitations of this approach, in general, the genetic algorithm proves to be better than previous phase-only adaptive algorithms

Keywords

adaptive antenna arrays; antenna phased arrays; array signal processing; direction-of-arrival estimation; genetic algorithms; interference suppression; jamming; phase shifters; search problems; beam steering direction; beam steering phase shifters; genetic algorithm; jammers; least significant bits; phase only adaptive algorithms; phase only adaptive nulling; phased arrays; search space; sidelobe level; small perturbations; total output power minimisation; Adaptive algorithm; Adaptive arrays; Antenna arrays; Beam steering; Directive antennas; Genetic algorithms; Interference; Phase shifters; Phased arrays; Power generation;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.585749

Filename

585749