Thursday, December 06, 2012
NGS Updates Coordinates on More Than 5,000 Survey Marks
The National Geodetic Survey (NGS) has updated the three-dimensional coordinates of more than 5,000 Global Navigation Satellite System (GNSS)-derived, high-accuracy survey marks published through its Online Positioning User Service Database (OPUS-DB), making them consistent with the latest definition of the National Spatial Reference System (NSRS). As of June, 2012, an updated realization of the North American Datum of 1983 was made available as the latest and most accurate representation of the NSRS. Updating all previously published GNSS-derived positions through OPUS-DB ensures these published positional references are as accurate as possible. For more information, contact Joe Evjen.
