Estimation of Multiple Coherent Source Locations Using Signal Subspace Fitting Technique Combined with SPM Method

摘要

An accurate estimation method of electromagnetic source location by combining WSF method with modified SPM method, which has been proposed by the present authors, involves a problem to determine the phase reference. To overcome this problem, a calibration technique to improve the estimation accuracy and to shorten the CPU time by using a reference antenna to determine the phase reference is proposed. As a result of the simulation and the experiment, shapes of two half-wavelength dipole antennas fed with the same phase are visualized, and source locations of these antennas are accurately estimated confirming the validity of the proposed method.