一种空间非均匀噪声环境下DOA估计的改进方法

被引:5
作者
令瀚
李德生
叶中付
机构
[1] 中国科技大学信号统计处理研究室
关键词
平滑处理技术; 空间非均匀噪声; 阵列信号处理; 波达方向估计;
D O I
暂无
中图分类号
TN911.23 [信号检测与估计];
学科分类号
摘要
文中提出一种空间非均匀噪声环境下的信号源DOA估计的改进方法。该算法首先对阵列协方差矩阵进行平滑处理,在此基础上估计出空间非均匀噪声协方差矩阵,通过已估计的噪声协方差矩阵对平滑处理后的阵列数据协方差矩阵进行白化处理,克服了空间非均匀噪声对空间谱估计的影响,实现信号源DOA估计。相对于原方法,文中所提方法改善了DOA估计的性能,计算量小,并且能够估计强相关或相干信号源DOA。理论分析和仿真结果均表明所提方法的有效性。
引用
收藏
页码:196 / 198+206 +206
页数:4
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