Real-Time Orbit Determination of KORn Navigation Satellite System based on Multi-GNSS Precise Point Positioning

Gimin Kim, Hyungjik Oh, Chandeok Park, Seungmo Seo

Research output: Contribution to journalConference articlepeer-review


This study proposes real-Time orbit/clock determination of KORn 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 oï set. 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 oï set 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 oï set. The oï set 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.

Original languageEnglish
Article number03008
JournalE3S Web of Conferences
Publication statusPublished - 2019 May 8
Event2018 International Symposium on Global Navigation Satellite System, ISGNSS 2018 - Bali, Indonesia
Duration: 2018 Nov 212018 Nov 23

Bibliographical note

Funding Information:
This study is conducted as a research part of national GNSS research center which is supported by agency for defense development (ADD) and defense acquisition program administration (DAPA).

Publisher Copyright:
© The Authors, published by EDP Sciences, 2019.

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Energy(all)
  • Earth and Planetary Sciences(all)


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