National Readjustment of 2007
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Final Reports for the National Spatial Reference System National Readjustment of 2007 |
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A readjustment of all Global Positioning System (GPS)
survey control in the United States was completed
in 2007 by the National Geodetic Survey (NGS). The
adjustment was undertaken to resolve inconsistencies
between the existing statewide High Accuracy Reference
Network (HARN) and/or Federal Base Network (FBN) adjustments
and the nationwide Continuously Operating Reference
Station (CORS) system, as well as between states,
and to develop individual local and network accuracy
estimates. For these reasons, on September 24, 2003,
NGS' Executive Steering Committee approved a plan
for the readjustment of horizontal positions and ellipsoid
heights for GPS stations only in the contiguous United
States. Classical surveys were not included in this
readjustment.
The NOAA Technical Report NOS NGS 60 NAD83
(NSRS2007) can be found here.
The NSRS2007 Analysis can be found here.
The files used to generate this analysis can be download
here.
They will have to be unzipped before
they can be used.
| Last updated by OAD pagemaster on Monday,30-Mar-2009 8:27 AM |
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