Issue |
E3S Web Conf.
Volume 94, 2019
International Symposium on Global Navigation Satellite System 2018 (ISGNSS 2018)
|
|
---|---|---|
Article Number | 03008 | |
Number of page(s) | 6 | |
Section | GNSS Today and Future | |
DOI | https://doi.org/10.1051/e3sconf/20199403008 | |
Published online | 08 May 2019 |
Real-Time Orbit Determination of Korean Navigation Satellite System based on Multi-GNSS Precise Point Positioning
1
Department of Astronomy, Yonsei University, Seoul 03722, Republic of Korea
2
Agency for Defense Development, Daejeon 34186, Republic of Korea
* e-mail: orion12@yonsei.ac.kr
** e-mail: jayoh@yonsei.ac.kr
*** e-mail: park.chandeok@yonsei.ac.kr
**** e-mail: sms@add.re.kr
This study proposes real-time orbit/clock determination of Korean Navigation Satellite System (KNSS), which employs the kinematic precise point positioning (PPP) solutions of multiple Global Navigation Satellite System (multi-GNSS) to compensate for receiver clock offset. Global visibility of KNSS satellites in terms of geometric coverage is first analyzed for the purpose of selecting optimal locations of KNSS monitoring stations among International GNSS Service (IGS) and Multi-GNSS Experiment (MGEX) network. While the receiver clock offset is obtained from multi-GNSS PPP clock solutions of real observation data, KNSS measurements are simulated from the dynamically propagated KNSS reference orbit and the receiver clock offset. The offset and drift of satellite clock are also generated based on two-state clock model considering atomic clock noise. Real-time orbit determination results are compared with an artificially generated true or bit, wihch show 0.4m and 0.5m of 3-dimensional root-mean-square (RMS) position errors for geostationary (GEO) and ellitically-inclined-geosynchronous-orbit (EIGSO) satellites, respectively. The overall results show that the real-time precise orbit determination of KNSS should be achievable in meter level by installing KNSS-compatible multi-GNSS receivers on the IGS and/or MGEX network. The overall process can be also used to verify integrity of KNSS monitoring stations.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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