Datum of GNSS (GPS) receivers
4 Nov 2021
GNSS (GPS) receivers such as the Juniper Systems Geode and the u-Blox NEO M8 (integrated in our Mesa 3 Windows and other rugged handheld computers) follow the NMEA 4.1 standard. When using these receivers with SBAS they provide data based on ITRF-2000 Current Epoch which is equivalent to WGS-84.
If you are using NTRIP corrections within the USA (such as with the Juniper Systems Geode), the datum may be equivalent to NAD-83.
If you need a datum other than WGS-84 (or NAD-83), some GPS/GIS apps that allow this include:
- ESRI ArcGIS Field Map
- ESRI Arcpad
- MapIt Pro
If needed, we can provide more options if you contact us at email@example.com.
For information on how to apply a Datum Transformation with ESRI ArcGIS Field Maps, see:
Errors can occur when data (or other geo-referenced layers such as background imagery) that use different map systems are loaded. For more information, see Geode appears to be inaccurate in good conditions.
For Uinta, data can initially be imported into Google Earth Pro to automatically convert it, and then the KML file can be imported in Uinta.
Content of article updated 4 Nov 2021, original article from 28 Feb 2020