Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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A Study on Status of Multi-GNSS Constellation and Its Positioning Performance on SPP mode

다중 GNSS 구축현황 및 표준절대측위 성능에 관한 연구

  • Yun, Seonghyeon (Department of Eco-Friendly Offshore Plant FEED Engineering, Changwon National University) ;
  • Lee, Hungkyu (School of Civil, Environmental and Chemical Engineering, Changwon National University) ;
  • Dinh, Huy Nguyen (Department of Eco-Friendly Offshore Plant FEED Engineering, Changwon National University)
  • 윤성현 (창원대학교 대학원 친환경해양플랜트FEED공학과정) ;
  • 이흥규 (창원대학교 토목환경화공융합공학부) ;
  • 응웬 딩 후이 (창원대학교 대학원 친환경해양플랜트FEED공학과정)
  • Received : 2019.05.31
  • Accepted : 2019.08.02
  • Published : 2019.08.31
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Abstract

This paper investigates the most recent status of multi-GNSS, including technical features, types of ranging signals provided, and satellite constellation. Furthermore, a series of multi-GNSS positioning experiments in SPP mode were carried out to assess the achievable accuracy and continuity with an application to various positioning scenarios. A week of GNSS measurements each in 2018 and 2019 was acquired from the national geographical information institute and processed. The results show that a single GNSS-based scenario often encounters positioning blockage in the harsh operational environment, while multi-constellation cases are able to remedy this situation. The accuracy of multi-GNSS with a combination of GPS and Galileo is superior to that of other GNSS compositions due to the larger SISRE (Signal In Space Ranging Errors) of GLONASS and Beidou. Due to the different characteristics of GNSS SISRE, an issue has been raised to optimally integrate satellite measurements to maximize accuracy of multi-GNSS positioning.

본 연구는 다양한 운용기관의 위성시스템 구축과 고도화에 따라 급변하는 위성 기반 측위환경이 표준절대측위 성능에 미치는 영향을 분석하고자 수행하였다. 이를 위해 각 위성시스템의 주파수와 운용 위성 수 등 그 특징을 파악하였고, 조사한 최신현황을 바탕으로 국토지리정보원 상시관측소 관측데이터를 이용한 표준절대측위 실험을 실시하였다. 실험은 위성시스템 데이터의 조합과 절사각에 따라 경우를 구분하여 처리한 후 측위 연속성과 정확도를 중심으로 그 성능을 분석하였다. 분석결과 절사각의 상승에 의한 가관측 위성 수의 감소로 측위의 불연속이 구간이 빈번하게 발생했으나, 이는 위성 시스템 관측데이터 조합을 통해 극복할 수 있었다. 특히, GPS와 BeiDou 혹은 GPS를 포함한 세 개 이상의 시스템 데이터 조합 시 연속성을 90% 이상으로 향상시킬 수 있었다. 정확도는 위성 유발 오차의 종합 지표인 SISRE의 영향으로 GPS와 Galileo 데이터 포함 시 상대적으로 높게 계산되었다. 측위실험 결과를 고려할 때, 도심지 등 신호차폐가 심한 지역에서 측위의 높은 연속성과 정확도를 유지하기 위해서는 다중 GNSS 데이터를 조합한 처리가 필요한 것으로 사료된다.

Keywords

References

  1. National Coordination Office(NCO), Modernization, National Coordination Office, Available From: https://www.gps.gov/systems/gps/modernization/ (accessed Jan. 31. 2019)
  2. Information and Analysis Center(IAC), GLONASS Status, Information and Analysis Center, Available From: https://www.glonass-iac.ru/en/guide/index.php (accessed Jan. 31. 2019)
  3. European GNSS Service Centre(EGSC), Program, European GNSS Service Centre, https://www.gsc-europa.eu/galileo-gsc-overview/programme (accessed Jan, 30. 2019)
  4. Information and Analysis Center(IAC), BeiDou, Information and Analysis Center, Available From: https://www.glonass-iac.ru/en/guide/beidou.php (accessed Jan. 31. 2019)
  5. B. K. Choi, C. H. Cho, J. H. Cho, S. J. Lee, "Multi-GNSS Standard Point Positioning using GPS, GLONASS, BeiDou and QZSS Measurements Recorded at MKPO Reference e Station in South Korea", Journal of Positioning, Navigation, and Timing, Vol.4, No.4, pp.205-211, 2015. DOI: https://doi.org/10.11003/JPNT.2015.4.4.205
  6. J. Q. Park, D. Y. Um, "Analysis of Positioning Performance According to the Condition of Multi-constellation GNSS", Journal of the Korea Academia-Industrial cooperation Society, Vol.17, No.4, pp.567-572, 2016. DOI: https://doi.org/10.5762/KAIS.2016.17.4.567
  7. H. J. Seok, B. W. Park, "Annual Prediction of Multi-GNSS Navigation Performance in Urban Canyon", Journal of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography, Vol.34, No.1, pp.71-78, 2016. DOI: https://doi.org/10.7848/ksgpc.2016.34.1.71
  8. National Coordination Office(NCO), Space Segment, National Coordination Office, Available From: https://www.gps.gov/systems/gps/space/ (accessed Jan. 31. 2019)
  9. L. Schaub, "GPS Status & Modernization Progress", CGSIC Meeting & ION GNSS+ 2018 Conference, Sep. 2018. DOI: https://doi.org/10.33012/2018.15841
  10. Information and Analysis Center(IAC), GLONASS History, Information and Analysis Center, Available From: https://www.glonass-iac.ru/en/GLONASS/index.php (accessed Jan. 26. 2019)
  11. Gunter's Space Page, Galileo FOC, Gunter's Space Page, Available From : https://space.skyrocket.de/doc_sdat/galileo-foc.htm (accessed Jan, 27. 2019)
  12. European Space Agency(ESA), Galileo Signal Plan, European Space Agency, Available From : https://gssc.esa.int/navipedia/index.php/Galileo_Sign al_Plan (accessed Jan, 24. 2019)
  13. European GNSS Service Centre(EGSC), Services, European GNSS Service Centre, Available From : https://www.gsc-europa.eu/galileo-gsc-overview/services (accessed Jan, 30. 2019)
  14. S. H. Jeon, H. M. So, T. J. Lee, G. H. Kim, S. I. Jeon, C. W. Kim, C. D. Kee, S. U. Lee, J. H. Kim, "Development of Galileo E5 Signal Receiving Software for AltBOC Signal Modulation", Journal of the Korea Society for Aeronautical and Space Sciences, Vol.37, No.9, pp.855-862, 2009. DOI: http://dx.doi.org/10.5139/JKSAS.2009.37.9.855
  15. European GNSS Service Centre(EGSC), Contellation Information, European GNSS Service Centre, https://www.gsc-europa.eu/system-status/Constellation-Information (accessed Jan, 30. 2019)
  16. The European Space Agency(ESA), Electric Thrusters May steel Galileo in Future, The European Space Agency, Available From : http://m.esa.int/Our_Activities/Navigation/Electric_thrusters_may_steer_Galileo_in_future (accesed Mar. 15. 2019)
  17. Information and Analysis Center(IAC), BeiDou Status, Information and Analysis Center, Available From: https://www.glonass-iac.ru/en/BEIDOU/index.php, (accessed Jan, 30. 2019)
  18. P. Henkel, C. Gunther, "Reliable Integer Ambiguity Resolution: Multi-Frequency Code Carrier Linear Combinations and Statistical A Priori Knowledge of Attitude", Navigation, Vol.59, No.1, pp.61-75, 2012. DOI: https://doi.org/10.1002/navi.6
  19. B. Li, "Review of triple-frequency GNSS: ambiguity resolution, benefits and challenges", The Journal of Global Positioning Systems, Vol.16, No.1, pp.1-11, 2018. DOI: https://doi.org/10.1186/s41445-018-0010-y
  20. BeiDou Navigation Satellite System, Ephemeris, BeiDou Navigation Satellite System, http://en.beidou.gov.cn/SYSTEMS/Ephemeris/201905/t20190527_18299.html (accessed May, 27. 2019)
  21. P. Steigenberger, O. Montenbruck, "Multi-GNSS SISRE Monitoring - Methodology and Results", IGS Workship 2017, Jul. 2017.
  22. T. Nischan, "GFZRNX-RINEX GNSS Data Conversion and Manipulation Toolbox (Version 1.05)", GFZ Data Services, Germany, 2016. DOI: https://doi.org/10.5880/GFZ.1.1.2016.002
  23. T. Takasu, "RTKLIB : Open Source Program Package for RTK-GPS", FOSS4G 2009 Tokyo, Japan, 2009.