Site Information

SLR site information is contained in the following databases:

Site Occupation Designator (SOD), maintained by the CDDIS
Directory of MERIT Sites (DOMES), maintained by the IERS
International Terrestrial Reference Frame 2000 (ITRF2000) SLR Site Coordinates/Velocities, maintained by the ITRF
ILRS Site Coordinates/Velocities (all sites), maintained by the ILRS CB
SLR System Eccentricities (Up, North, East and X, Y, Z), maintained by the ILRS CB
ILRS Site and System Information Form (Site Logs), maintained by the ILRS systems
System Configuration Files, maintained by the ILRS systems
Data Corrections (pre-1999, post-1999), maintained by the ILRS CB

Definitions:

SOD is an eight digit code to uniquely describe an occupation of a geodetic monument.

DOMES is a nine character code to unambiguously identify a geodetic instrument reference point and/or geodetic marker

ITRF2000 datum definition:

Scale and rate: weighted average of SLR and VLBI solutions

Origin: weighted average of SLR solutions

Orientation: insured upon a selection of ITRF sites with high geodetic quality

Rotations: ITRF97 at 1997.0 epoch

Rotation rates: No Net Rotation w.r.t. NNR-NUVEL1A

System eccentricities are the offsets in Up, North, East and X, Y, Z from the geodetic monument (if one exists) to the optical reference point.

Responsible Government Official: Carey Noll
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