Compatibility of Terrestrial Reference Frames used in GNSS broadcast messages during an 8?week period of 2019 |
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| Authors: | Stephen Malys Russell Solomon Jason Drotar Todd Kawakami Thomas Johnson |
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| Institution: | 1. National Geospatial-Intelligence Agency, Research Directorate 7500 GEOINT Drive, Springfield, VA 22150-7500, USA;2. Naval Surface Warfare Center 17214 Avenue B, Suite 128, Dahlgren, VA 22448, USA |
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| Abstract: | The operational Terrestrial Reference Frames (TRFs) realized through the evaluation of broadcast ephemerides for GPS, GLONASS, Galileo, BeiDou-2 and BeiDou-3 have been compared to IGS14, the TRF realized by the International GNSS Service (IGS). The TRFs realized by the GPS, GLONASS, Galileo, and BeiDou-2 and BeiDou-3 broadcast ephemerides are the orbital realizations of WGS 84 (G1762′), PZ90.11, GTRF19v01, and BDCS respectively. These TRFs are compared using up to 56 days of data (21 July-14 Sept 2019) at a 5 or 15-min rate. The operational TRFs are compared to IGS14 in a 7-parameter similarity (Helmert) transformation. Numerical results show that the operational GNSS TRFs differ from IGS14 at a level no greater than 4 cm for Galileo, 6 cm for GPS and BeiDou-3, 13 cm for GLONASS, and 48 cm for a limited set of BeiDou-2 Medium Earth Orbit (MEO) vehicles. |
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| Keywords: | GNSS Terrestrial Reference Frames Broadcast Ephemerides |
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