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AgGPS 252 Receiver User Guide 15
Overview 2
The AgGPS 252 receiver outputs position coordinates in several datums
and ellipsoids depending on the GPS positioning method being used.
See Table 2.6.
For more information, go to the National Geodetic Survey website at
www.ngs.noaa.gov/faq.shtml#WhatDatum
Table 2.6 DGPS coordinate systems
GPS positioning method Datum Ellipsoid
None – Autonomous mode WGS-84
1
WGS-84
OmniSTAR VBS North American Beams NAD-83
2
GRS-80
OmniSTAR VBS Rest of World Beams ITRF
3
GRS-80
OmniSTAR HP ITRF 2000 ITRF 2000
WAAS Beams WGS-84 WGS-84
RTK WGS-84 WGS-84
1
World Geodetic System (WGS) 1984. Datum and ellipsoid.
2
North American Datum (NAD) 1983. Equivalent to WGS-84 in North
America.
3
International Terrestrial Reference Frame (ITRF). Contact the DGPS provider for details.
Ag252_100B_UserGuide_ENG.book Page 15 Thursday, July 28, 2005 4:06 PM