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Element position optimization of dual-frequency sparse array for direction finding using MUSIC

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3 Author(s)
Jianfeng Zheng ; Dept. of Electron. Eng., Tsinghua Univ., Beijing, China ; Qiang Fang ; Zhenghe Feng

In this paper, to estimate the directions of impinging signals in dual-frequency using a single sparse array, the element position optimization of dual-frequency sparse arrays is presented. Based on the relationship between the correlation spectrum and space spectrum of MUSIC, and the Dolph-Chebyshev procedure, we proposed a novel approach to improve the direction finding estimation and a successful design procedure for dual-frequency sparse array by arranging the element position using genetic algorithm (GA) in optimizing the correlation spectrum and minimizing the asymptotic errors covariance of MUSIC in dual-frequency simultaneously. The estimation performances with the optimized sparse arrays are also compared with some common arrays.

Published in:

Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings  (Volume:3 )

Date of Conference:

4-7 Dec. 2005