8/9/2002 - 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.
Not only does the network of reference stations collect GPS information to monitor the movements of the earth's crust to millimeter accuracy, it also provides accurate survey control points to Japanese surveyors, who will be able to access surveying data through an online bulletin board service.
5700 CORS GPS Reference Station System
The standard 5700 CORS system provides reference station data, in both real-time as well as logged internal memory for post-processing. Applications include deformation monitoring, engineering and construction projects, surveying, geodetic and atmospheric research, mapping and Geographic Information System (GIS) data collection. In addition, the reference station can be used to establish RTK infrastructure including the Trimble VRS.
At the heart of the system is an all-new, low-power GPS receiver built around Trimble's latest generation Maxwell 4 ASIC technology which also incorporates WAAS/EGNOS capability. The new chip provides higher speed, longer battery life, better satellite tracking and higher precision in extreme environments and is housed in an extremely rugged, fully-sealed, waterproof, magnesium alloy housing. The receiver is ideal for permanent or temporary installation in all types of conditions.
About Trimble's Engineering and Construction Division
The combination of Trimble and Spectra Precision, the world leaders in GPS, construction lasers, robotic total stations and machine control solutions, is creating a broad range of innovative solutions that will change the way construction work is done. The Engineering and Construction Division of Trimble is focusing on the development of technology and solutions in the core areas of machine control, surveying, and construction instruments. From concept to completion, Trimble's integrated systems streamline jobs and improve productivity.
Trimble is a leading innovator of Global Positioning System (GPS) technology. In addition to providing advanced GPS components, Trimble augments GPS with other positioning technologies as well as wireless communications and software to create complete customer solutions. Trimble's worldwide presence and unique capabilities position the Company for growth in emerging applications including surveying, automobile navigation, machine guidance, asset tracking, wireless platforms, and telecommunications infrastructure. Founded in 1978 and headquartered in Sunnyvale, Calif., Trimble has more than 2,000 employees in more than 20 countries worldwide.
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