A fast adaptive null-steering algorithm based on output power measurements

Author

Ko, C.C.

Author_Institution

Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore

Volume

29

Issue

3

fYear

1993

fDate

7/1/1993 12:00:00 AM

Firstpage

717

Lastpage

725

Abstract

Presented and investigated here is a simple and fast adaptive algorithm for linear power inversion arrays whose nulls can be accurately steered by controlling the element weights. Based on measurements of the powers of the three signals derived from the array output and the output of an auxiliary beamformer, the algorithm tracks unknown jammers in the environment by steering the nulls of the array one by one in a cyclical time-multiplexed manner. When compared with the least mean square (LMS) algorithm, the proposed algorithm has about the same implementation complexity, a better convergence behavior and the advantage that nulls are directly available

Keywords

adaptive systems; array signal processing; computational complexity; jamming; least squares approximations; adaptive null-steering algorithm; auxiliary beamformer; cyclical time-multiplexed manner; jammers; jamming; least mean square algorithm; linear power inversion arrays; output power measurements; Adaptive algorithm; Adaptive arrays; Convergence; Interference; Jamming; Least squares approximation; Narrowband; Position measurement; Power generation; Power measurement;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.220928

Filename

220928