Comparison of Realizations of the Terrestrial Reference Frame
Paper in proceeding, 2013
IGN and DGFI both generated realizations of the terrestrial reference frame under the auspices of the IERS from combination of the same space geodetic data. We compared the IGN and DGFI TRFs with a GSFC CALC/SOLVE TRF. WRMS position and velocity differences for the 40 most frequently observed sites were 2–3 mm and 0.3–0.4 mm/year.
There was a scale difference of 0.39/ 0.09 ppb between the IGN/DGFI realizations and the GSFC solution. When we fixed positions and velocities to either the IGN or DGFI values in CALC/SOLVE solutions, the resulting EOP estimates were not significantly different from the estimates from a standard TRF solution.
There was a scale difference of 0.39/ 0.09 ppb between the IGN/DGFI realizations and the GSFC solution. When we fixed positions and velocities to either the IGN or DGFI values in CALC/SOLVE solutions, the resulting EOP estimates were not significantly different from the estimates from a standard TRF solution.
Radio wave technique Terrestrial reference frame Space geodesy
Author
Chopo Ma
National Aeronautics and Space Administration (NASA)
Daniel S. MacMillan
NVI Inc
National Aeronautics and Space Administration (NASA)
Sergei Bolotin
National Aeronautics and Space Administration (NASA)
NVI Inc
Karine le Bail
National Aeronautics and Space Administration (NASA)
NVI Inc
David Gordon
National Aeronautics and Space Administration (NASA)
NVI Inc
John Gipson
NVI Inc
National Aeronautics and Space Administration (NASA)
Reference Frames for Applications in Geosciences, International Association of Geodesy Symposia
0939-9585 (ISSN) 2197-9359 (eISSN)
Vol. 138 51-56978-3-642-32997-5 (ISBN)
Subject Categories (SSIF 2025)
Earth and Related Environmental Sciences
DOI
10.1007/978-3-642-32998-2_9