DOA Estimation Under Strong Impulsive Noise Based on Median Value Filtering

被引：0
作者：
An C.-L. [1 ]
Yang G.-Y. [2 ]
Yang Y.-J. [1 ]
机构：
[1] Chongqing Engineering Research Center of New Energy Storage Devices and Applications, Chongqing University of Arts and Sciences, Chongqing
[2] Southwest China Research Institute of Electronic Equipment, Chengdu
来源：
Tien Tzu Hsueh Pao/Acta Electronica Sinica | 2021年 / 49卷 / 06期
关键词：
Direction of arrival estimation; Fractional lower order statistics; Impulsive noise; Median value filtering preprocessing;
D O I：
10.12263/DZXB.20200392
中图分类号：
学科分类号：
摘要：
The present direction of arrival (DOA) estimation methods in impulsive noise environment are mostly based on the fractional lower order statistics, which has huge computational complexity and poor performance at strong impulsive noise.By researching and analyzing the distribution of the impulsive noise, we propose a method based on the median value filtering utilizing the low probability and randomness of the impulse.And we present the Cramer-Rao bound (CRB) of angle estimation in the impulsive noise.The median value filtering method is applied to the array received data to eliminate the impulse noise, and the improved method is derived for DOA estimation in strong impulsive noise.Then, the common second-order moment method can be exploited to estimate the DOAs.Theoretical analysis and simulation results show that the proposed method has small computational load as well as excellent performance, and can improve the estimation performance at low signal to noise ratio and strong impulsive noise remarkably. © 2021, Chinese Institute of Electronics. All right reserved.
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页码：1159 / 1166
页数：7
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