WGS84/PZ90 Transformation Parameters Determination Based On Laser And Ephemeris Long-Term GLONASS Orbital Data Processing

Vladimir V. Mitrikas, Sergey G. Revnivykh, Evgeniy V. Bykhanov

Abstract:	The transformation parameters between GLONASS and GPS reference frames PZ-90 and WGS-84 respectively have been defined in the framework of study funded by Russian space agency. The orbital method has been applied for transformation parameters determination. Its idea is the comparison of the GLONASS satellite orbits in both coordinate systems. The GLONASS orbit in International Terrestrial Reference Frame-94 (ITRF94) has been obtained based on the laser data processing of 20 months duration. Those data have been gathered in the frame of international campaign of two GLONASS satellites tracking. The orbit of the same satellites in PZ-90 has been defined by averaging the real ephemeris obtained from the System Control Center (SCC). The relatively small ITRF94 to WGS84 transformation have been applied as determined in [4] and [5] to obtain the PZ-90 to WGS84 transformation from PZ-90 to ITRF94. As a result the transformation parameters between both space navigation systems (SNS) reference frames have been determined for all 20 months time period. The dependence on time of the transformation parameters has been defined that is highly correlated with difference between the Earth Orientation Parameters (EOP) used in regular GLONASS Orbit Determination (OD) and final International Earth Rotation Service (IERS) values. The estimated accuracy of the transformation is expected to be in 20-30 cm level after removing of EOP difference. The presented parameters are proposed to be used in combined GPS-GLONASS receivers.
Published in:	Proceedings of the 11th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1998) September 15 - 18, 1998 Nashville, TN
Pages:	1625 - 1635
Cite this article:	Mitrikas, Vladimir V., Revnivykh, Sergey G., Bykhanov, Evgeniy V., "WGS84/PZ90 Transformation Parameters Determination Based On Laser And Ephemeris Long-Term GLONASS Orbital Data Processing," Proceedings of the 11th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1998), Nashville, TN, September 1998, pp. 1625-1635.
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