GNSS 고정밀 신호분해 기술의 성능 비교 분석

Abstract

In the urban environment, multipathgreatly deteriorates GNSS(Global Navigation Satellite Systems) positioning performance. In such environment, the first arrival signal detection technology is necessaryto realizean accurate navigation system. Super-Resolution technology is a method for mitigating the effects of multipath. MEDLL(Multipath Estimating Delay Lock Loop), SAGE(The space-alternating generalized expectation–maximization) and LIMS (Least-Squares based Iterative Multipath Super-Resolution) are representative of Super-Resolution algorithm. In this paper, we evaluate performance of Super-Resolution technique by demonstratingdetection accuracyand computation of the algorithms.