DOA estimation of noncircular signals with multistage wiener filter and polynomial rooting

被引：1
|
作者：
机构：
[1] School of Information and Navigation, Air Force Engineering University
[2] Unit 95482 of PLA
来源：
Song, A.-M. | 2013年 / Univ. of Electronic Science and Technology of China卷 / 42期
关键词：
Array signal processing; Direction-of-arrival estimation; Multistage wiener filter; Noncircular signals; Polynomial rooting;
D O I：
10.3969/j.issn.1001-0548.2013.01.013
中图分类号：
学科分类号：
摘要：
A computationally efficient direction-of-arrival (DOA) estimation algorithm for noncircular signals based on multistage wiener filter theory and polynomial rooting technique is proposed. Firstly, the array extension matrix is constructed by utilizing the noncircularity of the signals. Secondly, the signal subspace is achieved with multistage Wiener filter (MSWF), which does not require the formation of the covariance matrix and its eigendecomposition. Thirdly, the polynomial rooting method of the signal subspace is derived based on uniform linear arrays, by which the estimate of DOA are obtained. The proposed algorithm is more computationally efficient, especially for the case of large number of sensors, in comparison with NC-root-MUSIC, NC-ESPRIT and extended propagator method (EPM), although their performances are near the same.
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页码：53 / 57
页数：4
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