窄带信号源数目与波达方向联合估计  

A New Method for Narrowband Signal Source-Number Detection and DOA Estimation

作　　者：张恒利[1] 赵拥军[1] 

机构地区：[1]解放军信息工程大学信息工程学院,河南郑州450002

出　　处：《现代电子技术》2008年第7期38-40,共3页Modern Electronics Technique

摘　　要：基于最小描述长度(MDL)准则和最大似然准则,提出了一种窄带信号源数目与波达方向(DOA)联合估计方法。该方法通过最大似然准则来估计信号源的所有可能波达方向,然后通过MDL准则来估计信号源数目,同时得到DOA。该方法不仅适用于非相干信号源,而且适用于相干信号源,即能抗多径传播干扰。仿真实验验证了他的性能。Based on Minimum Description Length （MDL） principle and maximum likelihood,a method for estimation of joint source- number detection and DOA is proposed in this paper. DOA is estimated by maximum likelihoodl at the same time,the number of narrow - band signal sources is detected by MDL. The method is applicable to any type of sources,including the case of sources which are fully correlated,referred to as the coherent signals case. The computer simulations show the availability and efficacy of the method.

关 键 词：窄带信号 MDL 最大似然准则 DOA 

分 类 号：TN911.72[电子电信—通信与信息系统]