A simple and fast zero tracking algorithm for adaptive arrays with large look direction errors is presented and investigated. Basically, the algorithm is based on adjusting the complex zeroes of a power inversion array in a time-multiplexed manner to track all the sources in the environment. To preserve the desired signal which is supposed to be closest to the look direction of 0/spl deg/, the algorithm removes the zero with the shortest distance to e/sup j0/ so that the directional response consists of only nulls steered at the jammers. When compared with the least mean square (LMS) algorithm employing zeroth and first-order look direction constraints, the new algorithm has about the same implementation complexity, is considerably faster, and possesses a much better signal-to-noise ratio (SNR) performance when the look direction is erroneous.<>
Robust algorithm for combating look direction error problems
IEEE Transactions on Aerospace and Electronic Systems ; 31 , 3 ; 1043-1053
1995-07-01
947814 byte
Article (Journal)
Electronic Resource
English
Robust Algorithm for Combating Look Direction Error Problems
Online Contents | 1995
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