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DGPS

Le DPGS

extrait de la page: http://www.pacificsites.com/~brooke/electron.shtml

A traduire: DGPS is a way to correct for a number of error sources by using a reference station and a rover. Most commonly done using a radio to send the DGPS correction data to the rover in real time such as for ship navigation in coastal waters (283.5 - 325 kHz). This requires recording information about the range and range rate for each satellite in view. The RTCM 104 specification covers the data format to transmit DGPS corrections. This is used by the U.S. Coast Guard DGPS stations. The great majority of DGPS is done in real time using only the C/A code signal. The accuracy after DGPS is around 5 meters. There are ways to do C/A code DGPS as a post processing operation.

The WAAS system is a geosynchronous satellite system of providing differential corrections.

Liens

• Construire soi-même un récepteur DPGS http://home1.gte.net/clseng/dgps_index.htm