Abstract.
The Global Positioning System is a constellation of 24–28 satellites, which can be used to define a global terrestrial reference frame. Daily offsets between a GPS defined frame and ITRF2000 have been estimated using more than a decade of GPS observations from 1990–2001. A linear fit to the full span of data shows agreement between the two frames at the level of –1 ppb and –0.1 ppb/year for scale, 5 mm and 0 mm/year for the X component of center of mass, –2 mm and –3 mm/year for the Y component, and 4 mm and 6 mm/year for the Z component. GPS is a viable tool for defining the global reference frame either alone, or in combination with other geodetic techniques.
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Heflin, M., Argus, D., Jefferson, D. et al. Comparison of a GPS-defined global reference frame with ITRF2000. GPS Solutions 6, 72–75 (2002). https://doi.org/10.1007/s10291-002-0015-5
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DOI: https://doi.org/10.1007/s10291-002-0015-5