Parameter Estimation of Uni-vector Sensor for Wideband Sources
Shanji Chen · Journal of Sanming University · 2008
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.