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Leica Geosystems Completes Reference Station Network in Michigan 12.14.2001

Network supports many applications.

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 a wide range of 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 posted data is provided in the industry-standard RINEX format. The MDOT CORS network operates automatically 24 hours a day, 7 days a week. The data is freely available to users throughout the state for a wide range of surveying, mapping, geographical information system (GIS), environmental and scientific applications. 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 Department of Transportation is investigating the feasibility of integrating the MDOT CORS network with other state offices and organizations and is developing policies to make it easy for specific cities and counties to add reference stations to the network. The Michigan system will also be integrated with other state CORS networks under the National Spatial Reference System program. More information is available at Leica's website ( or the Michigan DOT CORS website (

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