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Comparison of Calibration Models for GPS Antenna Phase Center Variations  

Park, Kwan-Dong (국민대학교 삼림과학대학)
Won, Ji-Hye (국민대학교 삼림과학대학)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.24, no.4, 2006 , pp. 319-326 More about this Journal
Abstract
To get the highly-accurate and precise position of a GPS receiver, they should consider the state-of-the-art GPS force and measurement models. Especially, the phase center variations (PCV) of a GPS antenna can cause several centimeters of positioning errors in the vertical direction. In this study, we implemented four different models of PCV and evaluated their impact on the computed coordinates. The test data were taken from the 14 National Geography Information Institute permanent GPS stations and 30 Minisry of Government Administration and Home Affairs sites. For different combinations of calibration methods, an average of 1.3-2.6cm of height difference was observed. Also, we found a maximum error of ${\sim}4mm$ in the estimates of the precipitable water vapors.
Keywords
Phase Center; PCV; GPS; GPS Errors; GIPSY;
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