Fast method for DOA estimation with circular and noncircular signals mixed together

Yaoping Zeng, Yixin Yang, Guangyue Lu, Qiongdan Huang

科研成果: 期刊稿件文章同行评审

4 引用 (Scopus)

摘要

Most of the existing algorithms to estimate the direction of arrival (DOA) of signals deal with the situation that all signals are circular. However, it is quite often in practical engineering that circular and noncircular signals appear in the same time. To effectively detect DOA of signals in such circumstances, we propose a novel algorithm. Firstly, using received data and its conjugate, we can detect more signals because of the doubled array aperture. Secondly, through unitary transform and multistage Wiener filter (MSWF) technology, we can obtain the noise subspace of array without performing eigendecomposition. Finally, by employing the improved MUSIC algorithm,we can acquire the DOA of the mixed circular and noncircular signals through two-stage search. Simulation results clearly demonstrate the effectiveness of the proposed algorithm.

源语言英语
文章编号206146
期刊Journal of Electrical and Computer Engineering
2014
DOI
出版状态已出版 - 1 10月 2014

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