GLONASSARY

DGPS (Differential GPS) - refers to techniques used to enhance accuracy, integrity, reliability, and availability of GPS data. The DGPS technique can be implemented in two ways: one based on using a single reference station to generate the correction data, and the other makes use of a network of reference stations. There are a number of services that provide DGPS corrections as opposed to “non-corrected,” or autonomous, positions. The signal provided by these services increases GPS accuracy by applying a 'correction' to the computed GPS position solutions. In addition, these correction services minimize, and in some cases eliminate, the potential errors (multi-path, atmospheric interference, orbital errors, clock errors, etc.) which can be introduced when a GPS computes its position. Some correction services available in Alabama include: WAAS, Coast Guard Beacon, John Deere StarFire™ System, OmniSTAR®, and Real-Time Kinematic (RTK) including CORS and Real-Time Kinematic Network (RTKN) solutions.

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GLONASS ARTICLES

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