Abstract
The Quasi-Zenith Satellite (QZS) transmits GPS reinforcement signals from the zenith direction. Therefore, improvement of satellite positioning availability is expected in the urban and mountainous areas by QZS. In particular, since LEX signal is delivered, including reinforcement information generated from observation data by the multiple permanent GPS monument, RTK positioning by LEX signal is expected to have the capability of real-time centimeter level positioning in Japan. The authors conducted the comparison experiments of conventional RTK positioning and positioning by LEX in order to examine the effectiveness of the reinforcing effects of LEX. The observation by LEX and RTK have done in various surrounding conditions at the same time to compare the availability and accuracy. As a result, the availability of LEX and RTK positioning showed differences according to the observation condition. In addition, the variation around the mean value of the solution was shown the same trend.
