Aug. 8, 2002 – Trimble has announced that the Japanese Geographical Survey Institute (GSI) has awarded a contract for the purchase of 381 additional 5700 Continuously Operating Reference Station (CORS) receivers and 346 International GPS Service (IGS) standard choke ring antennae to expand its GPS-based network. The network is used to monitor the movement of the earth’s crust and ultimately aid in the prediction of earthquake activity in Japan. The purchase is part of an ongoing program to upgrade the GSI nationwide network. The contract award follows an earlier purchase in September of 2001 for 360 Trimble 5700 CORS receivers for use in the same program.
Trimble, in cooperation with Hitachi Zosen Information Systems (HZS), Japan, has supplied more than 1,190 GPS reference stations since 1992. GPS data from the 5700 CORS reference stations will support the existing monitoring system, which uses the Bernese processing software, and also provides the real-time information necessary to produce the network corrected Real-Time Kinematic (RTK) data created by the Virtual Reference Station (VRSTM) system.
