火力与指挥控制2012，Vol.37Issue(1)：168-171,4.
空间非平稳高斯噪声背景下混合信号的DOA估计
DOA Estimation Method for Mixed Signals under Spatially Nonstationary Gauss Noise Fields
摘要
Abstract
In this paper, a new direction of arrival (DOA)estimation method based the fourth-order cumulates (FOC)is proposed for mixed signals under spatially nonstaionary gauss noise field. This method comprises two steps: the first step is to estimate the uncorrelation signals by using similarly ESPRIT method by reconstructing FOC matrix of mixed signals, the second step is to resolve the coherent signals with the modified spatial difference smoothing matrix, and then the uncorrelation signals and spatial nonstaionary gauss noise can be eliminated. The number of sources resolved by the proposed method can exceed the number of array elements. Simulation result indicates the proposed method is effective.关键词
DOA估计/空间非平稳高斯噪声/四阶累积量/空间差分平滑Key words
DOA estimation/ spatially nonstationary gauss noise/ fourth-order cumulates/ spatial difference smoothing分类
信息技术与安全科学引用本文复制引用
陈明建,罗景青,刘春生..空间非平稳高斯噪声背景下混合信号的DOA估计[J].火力与指挥控制,2012,37(1):168-171,4.
