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Library Card

Karsky, Dick ; Jasumback, Anthony E.; Patterson, Don . 1999. Evaluation of the Trimble ProXRS GPS Receiver Using Satellite Real-Time DGPS Corrections. 9971 2318. Missoula, MT: U.S. Department of Agriculture, Forest Service, Missoula Technology and Development Center.

Describes evaluation of the real-time accuracy of the Trimble ProXRS GPS Receiver using the OmniSTAR Satellite Differential Global Positioning System (DGPS). The evaluation was conducted at the Lubrecht GPS Test Facility near Missoula, MT. The Trimble ProXRS is a 12-channel receiver that can integrate GPS signals with real-time differential corrections broadcast by a satellite differential service or by a radio beacon. The OmniSTAR Satellite Service was used during this evaluation. When the Trimble ProXRS was used in the open and corrected with the satellite data, it provided nearly 1-meter horizontal-position accuracy. When the GPS unit was operated under the canopy, the average horizontal accuracy was 1.4 meters with the real-time corrections.



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