基于宽带源的单矢量传感器参数估计  

Parameter Estimation of Uni-vector Sensor for Wideband Sources

作　　者：张锐戈[1] 陈善继[2] 

机构地区：[1]三明学院物理与机电工程系,福建三明365004 [2]青海民族学院电信系,青海西宁810007

出　　处：《三明学院学报》2008年第2期154-157,共4页Journal of Sanming University

基　　金：福建省科技厅资助项目(2007F5093);08国家民委科研项目(08QH07)

摘　　要：在极化阵列信号处理中,高效的子空间类算法只适用于窄带情形,而工程中涉及的大多为宽带信号,此制约电磁矢量传感器的应用范围。提出一种用单个电磁矢量传感器实现宽带信号参数估计的方法,将宽带信号分成多个中心频率互不重叠的子带,用聚焦矩阵将各子带聚焦到参考频率后得到适合窄带模型的协方差矩阵。依据阵列信号空域与时域的等效关系估计出信号子空间后,用矢量叉乘方法估计出信号的波达方向和极化参数。High-efficiency subspace algorithm of polarization array signals processing is only applicable in the narrowband signal model. In most engineering practice, however, wideband signals are involved, which is to limit the application area of electromagnetic vector sensor. This paper presents a novel parameter estimation method of uni-vector sensor for wideband sources. The wideband signals are decomposed into a set of narrowband signals with non-overlapping frequency, and a new covariance matrix suitability for the narrowband signals is acquired by focusing different narrowband signals into the reference frequency. The signal subspace is estimated by exploiting the equivalent between spatial domain and time domain of array signals, and direction of arrival and polarization parameters are acquired by vector cross product algorithm.

关 键 词：矢量传感器 波达方向 极化 

分 类 号：TN911.7[电子电信—通信与信息系统]