Leica Geosystems installs CORS network

January 30, 2002
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Leica Geosystems installs CORS network

Leica Geosystems completed the installation of a statewide Continuously Operating Reference Station (CORS) network for the Michigan Department of Transportation (MDOT), providing GPS data to support high-precision positioning and mapping applications. The network includes 16 CORS stations at strategic locations around the state, and a central control and monitoring facility in Lansing. The stations automatically measure errors in the GPS satellite signals and compute error correction factors. DGPS and real-time kinematic (RTK) data are streamed in real-time from the reference stations via Internet connections to the Lansing control facility, where data integrity is checked prior to being uploaded to the MDOT website for public access. The MDOT CORS network operates automatically, 24 hours a day, seven days a week. The data is freely available to users throughout the state. Each of the CORS stations consists of a Leica RS500 12-channel dual-frequency GPS reference station with a high precision NASA/JPL choke-ring antenna. Network control and integrity monitoring are provided by Leica’s IRONet software. The Michigan system will be integrated with other state CORS networks under the National Spatial Reference System program. (Leica Geosystems, Norcross, Ga.)

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