任意平面阵列的相干信号二维波达方向估计方法

Journal of Systems Engineering and Electronics ›› 2009, Vol. 31 ›› Issue (12): 2841-2843.

任意平面阵列的相干信号二维波达方向估计方法

甄佳奇，司锡才，王桐，那振宇

哈尔滨工程大学信息与通信工程学院，黑龙江哈尔滨 150001

出版日期:2009-12-24 发布日期:2010-01-03

Method of 2D direction of arrival estimation for coherent signals with arbitrary plane array

ZHEN Jia-qi, SI Xi-cai, WANG Tong, NA Zhen-yu

Information and Communication Engineering Coll., Harbin Engineering Univ., Harbin 150001, China

Online:2009-12-24 Published:2010-01-03

摘要/Abstract

摘要：

相干信号的波达方向(direction of arrival, DOA)估计一直是阵列信号处理中研究的关键问题，但传统的算法受到阵列流型的限制。为了解决任意平面阵列对二维相干信号的DOA估计问题，提出了一种新的方法。首先利用信号的循环平稳特性构造数据协方差矩阵，再利用信号在极化域的差异来实现解相干。该方法具有噪声抑制的能力，无需空间平滑，不影响阵列孔径，并且对窄带信号和宽带信号均适用。仿真结果证明了该算法的有效性。

Abstract:

DOA (direction of arrival) estimation of coherent signals is an important content in array signal processing，but the traditional algorithm is usually confined by the array manifold. In order to solve the problem of two dimensions DOA estimation for coherent signals with arbitrary plane array, a new algorithm is proposed. The corresponding correlation matrix is constructed using the characteristics of cyclostationary signals, then the coherence is solved using the difference in polarization. The proposed method can suppress noises does not need spatial smoothing, does not affect the aperture of the sensor array, and can be employed to both narrowband and wideband cases. Computer simulation results prove the effective performance of the method.

甄佳奇，司锡才，王桐，那振宇. 任意平面阵列的相干信号二维波达方向估计方法[J]. Journal of Systems Engineering and Electronics, 2009, 31(12): 2841-2843.

ZHEN Jia-qi, SI Xi-cai, WANG Tong, NA Zhen-yu. Method of 2D direction of arrival estimation for coherent signals with arbitrary plane array[J]. Journal of Systems Engineering and Electronics, 2009, 31(12): 2841-2843.