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http://dx.doi.org/10.12673/jant.2016.23.6.535

Precise Orbit Estimation of GPS using GIPSY-OASIS  

Ha, Jihyun (PP-Solution Corporation)
Chun, Sebum (Navigation Research and Development Division, Korea Aerospace Research Institute)
Park, Kwan-Dong (Department of Geoinformatic Engineering, Inha University)
Publication Information
Journal of Advanced Navigation Technology / v.23, no.6, 2019 , pp. 535-541 More about this Journal
Abstract
In this paper, scripts for estimating the reference orbits of navigation satellites were developed and their performance was analyzed as a preliminary study for the development of the Korean GPS precise orbit determination technology. The JPL Flinn AC's data processing strategy was applied and Linux-based scripts were developed using GIPSY-OASIS. For the analysis of the accuracy of the estimated reference orbit, the precise orbit provided by the international GNSS data center was used as the truth. As a result, estimated satellite coordinates showed almost exactly same patterns and trends with the reference precise orbits, and their differences are in the range of ±2 cm. The average error between the two orbits was less than 1 cm in the 3D direction, while the standard deviation was also at 1 cm. From these, we found that the developed scripts have excellent performance in precise orbit determination.
Keywords
Global navigation satellite system; Global positioning system; Precise orbit determination; Reference orbit estimation; GIPSY-OASIS;
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