Journal of Positioning, Navigation, and Timing (J Position Navig Timing; JPNT)
Citation: Won, D., Kim, K., Lee, E., Kim, J., & Song, Y., 2023, DDevelopment of Real-time Mission Monitoring for the Korea Augmentation Satellite System, Journal of Positioning, Navigation, and Timing, 12, 23-35.
Journal of Positioning, Navigation, and Timing (J Position Navig Timing) 2023 March, Volume 12, Issue 1, pages 23-35. https://doi.org/10.11003/JPNT.2023.12.1.23
Received on 17 January 2023, Revised on 02 February 2023, Accepted on 14 February 2023, Published on 30 March 2023.
License: Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/bync/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Daehee Won1†, Koontack Kim2, Eunsung Lee1, Jungja Kim3, Youngjae Song4
1Satellite Ground Station R&D Division, Korea Aerospace Research Institute, Daejeon 34133, Korea
2SBAS System Engineering & Integration Team, Korea Aerospace Research Institute, Daejeon 34133, Korea
3KCEI, M&S Research Institution, Seoul 08390, Korea
4JIT Solution, SW Division, Daejeon 34016, Korea
†Corresponding Author: E-mail, dhw@kari.re.kr; Tel: +82-42-860-2709 Fax: +82-42-879-4465
Korea Augmentation Satellite System (KASS) is a satellite-based augmentation system (SBAS) that provides approach procedure with vertical guidance-I (APV-I) level corrections and integrity information to Korea territory. KASS is used to monitor navigation performance in real-time, and this paper introduces the design, implementation, and verification process of mission monitoring (MIMO) in KASS. MIMO was developed in compliance with the Minimum Operational Performance Standards of the Radio Technical Commission for Aeronautics for Global Positioning System (GPS)/SBAS airborne equipment. In this study, the MIMO system was verified by comparing and analyzing the outputs of reference tools. Additionally, the definition and derivation method of accuracy, integrity, continuity, and availability subject to MIMO were examined. The internal and external interfaces and functions were then designed and implemented. The GPS data pre-processing was minimized during the implementation to evaluate the navigation performance experienced by general users. Subsequently, tests and verification methods were used to compare the obtained results based on reference tools. The test was performed using the KASS dataset, which included GPS and SBAS observations. The decoding performance of the developed MIMO was identical to that of the reference tools. Additionally, the navigation performance was verified by confirming the similarity in trends. As MIMO is a component of KASS used for real-time monitoring of the navigation performance of SBAS, the KASS operator can identify whether an abnormality exists in the navigation performance in real-time. Moreover, the preliminary identification of the abnormal point during the post-processing of data can improve operational efficiency.
KASS, performance, monitoring, real-time
Authie, T., Dall’Orso, M., Trilles, S., Choi, H., Kim, H., et al. 2017, Performances Monitoring and Analysis for KASS, International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017), Portland, Oregon, Sep. 25-29, 2017, pp.958-978. https://doi.org/10.33012/2017.15405
Choi, B.-K., Han, D.-H., Kim, D.-U., Kim, J.-B., & Kee, C.-D. 2018, Development of MATLAB GUI Based Software for Analysis of KASS Availability Performance, Journal of Advanced Navigation Technology, 22, 384-390. https:// doi.org/10.12673/JANT.2018.22.5.384
Choi, H. H., Choi, K. S., Kang, H. W., Han, J. A., & Lee, E. 2016, Design of Tool Architecture for KASS Operational Test, 2016 KGS Conference, Nov 2-4 2016, Phoenix, Jeju, Korea, pp.545-549. http://ipnt.or.kr/2016proc/126
Comelli, G. 2019, KCS Subsystem Requirements Document, Thales Alenia Space, KASS-TASF-RQ/0005- 0007598657.
Coordinates, Performance measurement of EGNOS Integrity and Continuity [Internet], cited 2022 August 22, available from: https://mycoordinates.org/performance-measurement-ofegnos-integrity-and-continuity
ESA, Navipedia-Integrity [Internet], cited 2022a October 17, available from: https://gssc.esa.int/navipedia/index. php/Integrity
ESA, SBAS TeACHER [Internet], cited 2022b August 22, available from: http://www.egnos-pro.esa.int/sbasteacher/index. html
Eurocontrol 2003, PEGASUS Technical Notes on SBAS, Eurocontrol GNSS Tools Team, PEG-TN-SBAS.
Eurocontrol 2011, PEGASUS Software User Manual, Eurocontrol GNSS Tools Team, PEG-SUM-01.
Eurocontrol 2018, PEGASUS Interface Control Document, Eurocontrol PEGASUS Team, PEG-ICD-02
Eurocontrol, PEGASUS [Internet], cited 2022 August 22, available from: https://www.eurocontrol.int/tool/pegasus
Germa, C. 2017, Mission Monitoring Algorithms Definition Document, Thales Alenia Space, KASS-TASF-TN/0005- 0008538265.
Hofmann-Wellenhof, B., Lichtenegger, H., & Wasle, E. 2008, GNSS–global navigation satellite systems: GPS, GLONASS, Galileo, and more (New York: Springer Wien). https://doi.org/10.1007/978-3-211-73017-1_3
ICAO 2006, International Standards and Recommended Practices – Annex 10: Aeronautical Telecommunications – Volume I Radio Navigation Aids: Vol. Annex 10 (6th edition), International Civil Aviation Organization.
IGS, RINEX – International GNSS Service, cited 2022 August 22, available from: https://www.igs.org/wg/ rinex/#documents-formats
Kim, K., Won, D. H., Park, Y., & Lee, E. 2021, A Study on the Verification Method for KASS Control Station, Journal of Positioning, Navigation, and Timing, 10, 221-228. https://doi.org/10.11003/JPNT.2021.10.3.221
MATLAB, Linear or rank correlation – MATLAB corr., cited 2022 August 22, available from: https://www. mathworks.com/help/stats/corr.html
RTCA 2006, Minimum Operational Performance Standards for Global Positioning System/Satellite-Based Augmentation System Airborne Equipment (RTCA DO229D): Vol. Change 1, RTCA. www.rtca.org
Son, M., Yun, Y., & Lee, B. 2022, Development Status of Operation Concept and Procedures for KASS, Journal of Positioning, Navigation, and Timing, 11, 51-58. https:// doi.org/10.11003/JPNT.2022.11.1.51
Tabti, I., Kahlouche, S., & Benadda, B. 2021, Performance of the EGNOS system in Algeria for single and dual frequency, International Journal of Aviation, Aeronautics, and Aerospace, 8. Retrieved from https://commons. erau.edu/ijaaa/vol8/iss3/8
Teske, J. 2022, KASS Industry external ICD, Thales Alenia Space, KASS-TASF-ID/0005-0008696384.
Ventura, J., Michel, P., Gauthier, L., Horgen, H., Montefusco, C., et al. 2004, EGNOS Message Server (EMS) User Interface Document, ESA. http://www.egnos-pro.esa. int/ems/EMS_UID_2_0.pdf
Won, D. H. & Lee, E. 2021, Prototype Development with MATLAB for KASS Mission Monitoring Tool, 2021 IPNT Conference, Nov 3-5 2021, Gangneung, Korea, pp.303306. http://ipnt.or.kr/2021proc/17
Conceptualization, D.Won and E.Lee; methodology, D.Won and K.Kim; software, J.Kim and Y.Song; validation, K.Kim and J.Kim; formal analysis, D.Won and J.Kim; investigation, D.Won and Y.Song; resources, D.Won, E.Lee and K.Kim; data curation, D.Won, K.Kim, J.Kim and Y.Song; writing—original draft preparation, D.Won, K.Kim, E.Lee; writing—review and editing, D.Won, K.Kim and E.Lee; visualization, D.Won; supervision, D.Won and E.Lee; project administration, E.Lee; funding acquisition, E.Lee.
The authors declare no conflict of interest.