On the demonstrated experiment using LEX and L1 signal from Japanese Quasi-Zenith Satellite Michibiki in Hokuriku district

Survey using GPS has been spreading in the world including Japan. Japanese government launched QZS (Quasi-Zenith Satellite) which is the first satellite of QZSS (Quasi-Zenith Satellite System) for the purpose to improve of GPS weak point. QZS is designed to pass along a special orbit, and is to stay over Japan for 8 hours, and QZS can keep the high zenith angle. Moreover, it is possible to obtain location information of high accuracy by support signal transmitted from QZS which is LEX signal. LEX signal is expected to collect high accuracy position data, however, launched satellite is only one by 2012, and just a 8 hours stay in the orbit of Japanese sky. The purpose of the research is to conduct the demonstrated experiment which uses the LEX signal from QZS in Hokuriku area in Japan, and it was compared with accuracy for absolute positioning between VRS (Virtual Reference Station)-GPS and QZSS.