航空学报 > 2003, Vol. 24 Issue (2): 174-177

在冲击噪声环境中基于子空间的测向算法研究

吕泽均1,2, 肖先赐1   

  1. 1. 电子科技大学电子工程系, 四川成都 610054;2. 中国电子科技集团公司第十研究所, 四川成都 610036
  • 收稿日期:2002-04-17 修回日期:2002-10-25 出版日期:2003-04-25 发布日期:2003-04-25

Study on Subspace-Based Direction Finding Algorithm in the Presence of Impulsive Noise Environments

LU Ze-jun1,2, XIAO Xian-ci1   

  1. 1. Department of Electronic Engineering; University of Elctronic S cience and Technology of China; Chengdu 610054; China;2. No. 10 Research Institute; China Electronics Technology Group Corporation; C hengdu610036; China
  • Received:2002-04-17 Revised:2002-10-25 Online:2003-04-25 Published:2003-04-25

摘要: 首先分析了冲击噪声的性质以及它对传统的基于二阶或高阶统计量的子空间测向技术的影响, 然后提出了一种新的在冲击噪声环境中基于子空间的阵列测向算法。该算法利用TLS-ESPRIT 算法的基本思想, 通过对阵列输出信号的协变异系数矩阵进行奇异值分解来估计来波方位, 最后进行了计算机仿真试验, 验证了该算法的可行性和有效性。

关键词: DOA, 子空间, 低阶矩, TLSESPRIT, 冲击噪声

Abstract: This paper first analyses the proper ties of impulsive noise and its affecting on the traditional subspace techniques employing second-or der or higher-or der statistics. Then we present a new subspace-based direction finding algor ithm in the presence of impulsive noise. According to the basic idea behind TLS-ESPRIT, the method estimatest he bear ing information of the incoming signals by performing singular value decomposition ( SVD) on the covariationcoefficient matrices of array outputs. Finally, the simulation results show the feasibility and effectiveness of the algorithm.

Key words: direction of arrival, subspace, lower order moment, TLS ESPRIT, impulsive n oise

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