Fuzzy System for DOA Estimation of Coherent Signals

Abstract:

This paper presents an efficient direction-of-arrival (DOA) Estimator for dealing with coherent signals. The empirical results show that significant performance degradation occurs when coherent signals coexist. Therefore, an utilizes the low sensitivity of Bartlett algorithm in estimation of DOAs for coherent signals to yield a low-resolution estimation of DOAs as initial search angle and uses fuzzy logic systems with incorporating expert knowledge to improve the resolution and performance of estimation of DOAs in coherent signals environment. Finally, numerical example was analyzed to illustrate high performance of the proposed method and to confirm the designed procedure.

• Periodical: Applied Mechanics and Materials (Volumes 427-429)
• Pages: 575-581
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.427-429.575
• Online since: September 2013
• Authors: Ya Ling Chen*, Chien Chou Lin
• Keywords: Direction-of-Arrival (DOA), Fuzzy Logic System (FLS), Multiple Signal Classification (MUSIC)

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