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g2gp 17-01-2009
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3.4 Reference/datum Group#

3.4.1 Reference frame details

Source and datum (total station, GPS, etc. and WGS84, UTM, LRF)Identify the source for control point collection and the datum used during data collection.
xyz coordinatesList the three-dimensional coordinates for each control point.
xyz covariance matrix Provide full correlation if available (from survey adjustment or GPS baseline solution), otherwise provide estimated standard deviation or variance of each coordinate.
Textual description of locationProvided a textual description for the location of each control point.
Image of the control point location (so it can be relocated)An image with the control point location clearly indicated.
Geometric constraints on reference features or controlList any known geometric constraints for reference features or control.
Coordinate SystemName of coordinate system, datum and projection.