QZSSによる測位特性評価 : GPS 補完衛星としての効果検証

Abstract

This paper describes the positioning accuracy using QZSS (Quasi Zenith Satellites System).The QZSS is the first satellite positioning system in Japan. The first satellite, called as Michibiki in Japanese name, of QZSS was launched in November 2010. The QZSS has the two main characteristics, 1) Flying zenith over Japan and 2) GPS (Global Positioning Systems) complementary. Until now, the high positioning accuracy by only the GPS can not observed in the urban area and mountainous area because the signals from the GPS are reflected by high-rise buildings. Under the satellite positioning environment on the ground level, it is expected that the positioning accuracy could be improved using the QZSS, which has the satellite located near zenith over Japan any time. For the main characteristics above mentioned, how the positioning accuracy by the combination of the QZSS and the GPS was examined in this research. The results showed that the positioning accuracy by the combination of the QZSS and the GPS was higher than that by only the GPS.