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Determination of Precise Coordinates and Velocities of 142 International GNSS Service Stations to Realize Terrestrial Reference System  

Baek, Jeong-Ho (과학기술연합대학원대학교 천문우주과학)
Jung, Sung-Wook (한국천문연구원 우주측지연구그룹)
Shin, Young-Hong (한국천문연구원 우주측지연구그룹)
Cho, Jung-Ho (한국천문연구원 우주측지연구그룹)
Park, Pil-Ho (한국천문연구원 선임연구부)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.27, no.3, 2009 , pp. 303-310 More about this Journal
Abstract
We processed seven years data of 142 IGS(International GNSS Service) stations were processed, which have been selected with an optimal network algorithm, to realize terrestrial reference system. To verify the result, a comparison with the ITRF2005 was given both in positions and velocities with transformation parameters estimation. The transformation parameters are within 4.3 mm in length, while the RMS(root mean square) difference of positions and velocities are 6.7 mm and 1.3 mm/yr in horizontal and 13.3 mm and 2.4 mm/yr in vertical, respectively, which represent good coincidences with ITRF2005. This research would help developing our own geodetic reference frame and may be applied for the global earth observations such as the global tectonics. A further improved TRF would be expected by applying various data processing strategies and with extension of data in number and observation period.
Keywords
GPS; Terrestrial reference system; Terrestrial reference frame; Transformation parameter; ITRF2005;
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