Performance Optimization of DOA Estimation in Non-Uniform Linear Antenna Array by PSO Algorithm

• Published in: Applied Mechanics and Materials Vol. 490-491; no. Mechanical Design and Power Engineering; pp. 451 - 455
• Main Authors: Wan, Liang Tian, Si, Wei Jian, Han, Hui Lian
• Format: Journal Article
• Language: English
• Published: Zurich Trans Tech Publications Ltd 01.01.2014
• Subjects: Algorithms; Arrays; Coherence; Linear arrays; Optimization; Signal classification; Stabilization; Swarm intelligence; Non-Uniform Array; Particle Swarm Optimization Algorithm; DOA Estimation
• ISBN: 303835001X; 9783038350019
• ISSN: 1660-9336; 1662-7482; 1662-7482
• DOI: 10.4028/www.scientific.net/AMM.490-491.451

In order to estimate the coherent source, a modified multiple signal classification (MUSIC) algorithm is introduced. And a novel arrangement method for the non-uniform linear array by particle swarm optimization (PSO) algorithm is proposed. This method needs merely a signal source whose direction-of-arrival (DOA) has been exactly known. The proposed method has a simple processing and a strong stabilization. It could be applied to optimized arbitrary array configuration. The simulation verifies that the performance of DOA estimation is improved effectively, which has proved the validity of the proposed method.