IntroductiontoGPSDataNMEA&RTCMRINEXCombinedatafromdifferentmanufacturer’sGPSreceiversForstaticdataprocessingandarchiveNMEATransmissionofdatabetweenGPSreceiverandotherdevices(e.g.GPSantennaPDAwithArcPadsoftware)ForrealtimepositioningRTCMTransmissionofdatabetweenGPSreceivers