S. Ogi
Status Report of Geographical Survey Institute
 
                   ABSTRACT
 
 
We briefly present a history of VLBI activities and the status of
Geographical Survey Institute (GSI). Firstly GSI developed three mobile
VLBI systems and had repeated observations with CRL. On the other hand,
GSI installed 1000 permanent GSP stations all over Japan (GEONET).
Then our VLBI strategy has been shifted from domestic mobile VLBI
observation to permanent VLBI stations and international VLBI service.
Last year GSI finished constructing GSI domestic VLBI network with five
permanent VLBI stations and Tsukuba VLBI center with three baseline K-4
correlator. A main station of the network is Tsukuba VLBI station (32m).
Tsukuba VLBI station also becomes a key station in the international VLBI
networks.
Now GSI analyzing survey results comparing with the data from GEONET.
 
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In Proceedings of the 13th Working Meeting on European VLBI for Geodesy
and Astrometry, Viechtach, 1999
 
Keywords: Tsukuba, Tsukuba VLBI station, GSI, GEONET, K4, CORE, APSG