Resolution Improvement of the MUSIC Algorithm Utilizing Two Differently Polarized Antennas (Special Issue on Millimeter-wave Short-range Application Systems Technology)

概要

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Recently, a short range millimeter wave or a microwave sensing system has been extensively studied to estimate a target position or a source location. It can be applied to indoor propagation analysis, carborne applications, etc. The application of the superresolution technique has been proposed to obtain a high resolution performance in the time domain or the spatial domain.However, the availability of the polarization synthesis in the receiving antennas has not been considered. In this paper, we use a pair of polarized swept frequency data and propose two modifications of the MUSIC algorithm to enhance the resolution of time delay. One modification is the correlation matrix formulation which relates to the total signal power, and the other is a polarization filtering applied to the correlation matrix. These modifications have advantages such that:1) Reduction of the estimation problem to the delay time estimation only; 2) Easy implementation. Experimental results are illustrated to show the availability of the methods, and to confirm the high resolution performance compared with the conventional method
社団法人電子情報通信学会の論文
1996-12-25