Trimble Supplies China GPS System

SUNNYVALE, Calif., June 2 -- Trimble, a global positioning system (GPS) technology developer, said it has supplied GPS reference stations and its Virtual Reference Station (VRS) software to the Seismological Bureau of Sichuan Province in China to establish a VRS network around the city of Chengdu.

The multipurpose network around Chengdu, the capital of the Sichuan Province, provides high-precision GPS data for monitoring the Earth's crustal movement and for surveying and construction work; the network will also provide correction data for real-time kinematic GPS users in the future.

The Sichuan Province VRS network is an enhancement to its current GPS monitoring network project, which is supported by the local provincial government as part of efforts to digitize Chengdu city. The GPS network consists of eight Trimble 5700 continuously operating reference station GPS receivers with Zephyr Geodetic antennae and GPSNet, RTKNet, Web server software and a communications infrastructure. Four of the 5700 CORS are used as permanent base stations; the other four are temporary post-processing stations.

The Seismological Bureau of Sichuan Province is a branch of the China Seismological Bureau; it has participated in the GPS crust monitoring project in China since 1998.

Trimble has also been involved in infrastructure projects for the Japanese Geographical Survey Institute (GSI) Nationwide Network; VRS network in Switzerland for the Swiss government; GPSnet.dk, the VRS network in Denmark; the Queensland, Australia VRS network; GPS reference stations for the General Lighthouse Authority Network around the coast of Great Britain; the Channel Tunnel Rail Link RTK Network; and the Zurich International Airport Expansion Project.

For more information, visit: www.trimble.com