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Can all GPS and GIS hardware and software use real-time NAD83(CSRS) corrections?

April 26, 2017corrections CSRS GIS GPS hardware real-time Software

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Can all GPS and GIS hardware and software use real-time NAD83(CSRS) corrections?

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Best results are obtained when using “specialized” GPS equipment (marine GPS units with integrated Coast Guard DGPS, GPS receivers with integrated CDGPS, Network RTK equipment). “Non-specialized” GPS equipment can get real-time NAD83(CSRS) corrections by using a separate radio (Coast Guard beacon radio, CDGPS radio, cellphone with NTRIP client). However users must take special precaution to understand how their equipment and software handle datums. Most GIS software (such as ArcPad), use as input a GPS receiver’s real-time NMEA (National Marine Electronics Association) data stream (standard format for position data). The NMEA “GPGGA” string contains a data field (7th) that indicates if a position was corrected (code=2) or not (code=1) but it has no field to indicate the datum.