利用电磁矢量传感器估计分布源三维到达角

Estimation of Distributed Source 3-D DOA Using Electro-Magnetic Vector Sensor

本文通过“分布源是在一定空间分布的多个点源信号的叠加”的认识,首次提出了电磁矢量传感器的分布源模型,给出了理论表达式和一阶近似表达式,分析了单个电磁矢量传感器的分布源模型的可辨识性问题。为减少搜索空间维数,提出了只搜索角度和极化空间的算法,甚至只搜索角度空间的算法。仿真证实了本文分析的有效性。

Based on the principle that a spatial distributed source can be regarded as superposition of many of point sources in a continuous spatial area, an Electro-Magnetic Vector Sensor (EMVS) model is proposed. Theoretical analysis and the 1st order approximate expression are given. The model抯 identifiability is also discussed. To reduce the searching complexity, this algorithm only involves the angular space and polarized space searching. In special cases, even angular searching is concerned. Simulations are given to verify the validity of the analysis on the proposed model.