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Realizing a terrestrial reference frame using the Global Positioning System
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DOI：10.1002/2015JB012225.png)
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摘要
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We describe a terrestrial reference frame (TRF) realization based on Global Positioning System (GPS) data alone. Our approach rests on a highly dynamic, long-arc (9 day) estimation strategy and on GPS satellite antenna calibrations derived from Gravity Recovery and Climate Experiment and TOPEX/Poseidon low Earth orbit receiver GPS data. Based on nearly 17 years of data (1997-2013), our solution for scale rate agrees with International Terrestrial Reference Frame (ITRF)2008 to 0.03 ppbyr(-1), and our solution for 3-D origin rate agrees with ITRF2008 to 0.4 mmyr(-1). Absolute scale differs by 1.1ppb (7 mm at the Earth's surface) and 3-D origin by 8 mm. These differences lie within estimated error levels for the contemporary TRF.
Keyword:
reference frames
GPS
geocenter motion
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IF:
4.1
论文数:
1.4W
被引数:
6.4W
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