非平稳噪声下相干信源MIMO雷达角度估计

doi:10.3969/j.issn.1001-2400.2018.04.030

摘要/Abstract

摘要：

为解决非平稳噪声、多径效应和相干电子干扰下多输入多输出雷达角度估计问题，提出了一种基于斜投影算子和Teoplitz矩阵重构的角度估计方法．通过Toeplitz重构把非平稳噪声转化为高斯白噪声，再用斜投影算子排除非相干信源，实现对相干信源的角度估计．该方法没有阵列孔径损失，可适用于任意阵列结构，且信源过载能力和阵元节省能力较强．最后通过仿真验证了该算法比多级维纳滤波器算法更适合于低信噪比的情况．

关键词: 相干信源, 非平稳噪声, 多输入多输出雷达, 角度估计

Abstract:

In order to solve the problem of MIMO radar angle estimation under non-stationary noise, multipath effect and coherent electronic interference, an angle estimation method based on oblique projection operator and Teoplitz matrix reconstruction is proposed. Through the reconstruction of Toeplitz, the nonstationary noise is transformed into Gauss white noise, and then the oblique projection operator is used to exclusion of incoherent sources, and the angular estimation of coherent source is realized. This method has no array aperture loss, can be applied to any array structure, and the ability of overload and element saving of the source is stronger. Finally, simulation results indicate that the proposed algorithm is more suitable for low SNR than the multistage Wiener filter algorithm.

Key words: coherent sources, non-stationary noise, multiple input multiple output radar, angle estimation

宫健;楼顺天;郭艺夺;张伟涛. 非平稳噪声下相干信源MIMO雷达角度估计[J]. 西安电子科技大学学报, 2018, 45(4): 174-180.

GONG Jian;LOU Shuntian;GUO Yiduo;ZHANG Weitao. MIMO radar angle estimation for coherent sources under non-stationary noise[J]. Journal of Xidian University, 2018, 45(4): 174-180.

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