期刊名称：Bulletin of the Geographical Survey Institute
印刷版ISSN：0373-7160
出版年度：2013
卷号：61
出版社：Geographical Survey Institute / Ministry of Land, Infrastructure and Transport
摘要：Since 1994, the Geospatial Information Authority of Japan (GSI) has been operating a continuous GPS observation network system, later known as GEONET, for surveying and crustal deformation monitoring. On May 10, 2013, GSI started providing nationwide the observation data from the Quasi-Zenith Satellites System and GLONASS in addition to GPS, opening the multi GNSS era in Japan. This report provides the background and history behind this modernization of GEONET, the effect of the use of multi GNSS confirmed so far, and the plan for the future modernization.
