Validation of geostationary earth orbit satellite ephemeris generated from satellite laser ranging

Hyungjik Oh, Eunseo Park, Hyung Chul Lim, Sang Ryool Lee, Jae Dong Choi, Chandeok Park

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

This study presents the generation and accuracy assessment of predicted orbital ephemeris based on satellite laser ranging (SLR) for geostationary Earth orbit (GEO) satellites. Two GEO satellites are considered: GEO-Korea Multi-Purpose Satellite (KOMPSAT)-2B (GK-2B) for simulational validation and Compass-G1 for real-world quality assessment. SLR-based orbit determination (OD) is proactively performed to generate orbital ephemeris. The length and the gap of the predicted orbital ephemeris were set by considering the consolidated prediction format (CPF). The resultant predicted ephemeris of GK-2B is directly compared with a pre-specified true orbit to show 17.461 m and 23.978 m, in 3D root-mean-square (RMS) position error and maximum position error for one day, respectively. The predicted ephemeris of Compass-G1 is overlapped with the Global Navigation Satellite System (GNSS) final orbit from the GeoForschungsZentrum (GFZ) analysis center (AC) to yield 36.760 m in 3D RMS position differences. It is also compared with the CPF orbit from the International Laser Ranging Service (ILRS) to present 109.888 m in 3D RMS position differences. These results imply that SLR-based orbital ephemeris can be an alternative candidate for improving the accuracy of commonly used radar-based orbital ephemeris for GEO satellites.

Original languageEnglish
Pages (from-to)227-233
Number of pages7
JournalJournal of Astronomy and Space Sciences
Volume35
Issue number4
DOIs
Publication statusPublished - 2018 Dec 1

Bibliographical note

Funding Information:
This research was supported by the Geostationary Earth Orbit Korea Multi-Purpose Satellite Development program (Project No. 2011-0030431) supervised by the Ministry of Science and ICT.

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Earth and Planetary Sciences(all)

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