Journal of Positioning, Navigation, and Timing (J Position Navig Timing; JPNT)
Citation: Song, J., Jeon, T., Kim, G., Park, S. H., & Park, S. G., 2023, Trend and Analysis of Protection Level Calculation Methods for Centimeter-Level Augmentation System in Maritime, Journal of Positioning, Navigation, and Timing, 12, 281-288.
Journal of Positioning, Navigation, and Timing (J Position Navig Timing) 2023 September, Volume 12, Issue 3, pages 281-288. https://doi.org/10.11003/JPNT.2023.12.3.281
Received on 09 May 2023, Revised on 12 June 2023, Accepted on 27 July 2023, Published on 30 September 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.
Jaeyoung Song, TaeHyeong Jeon, Gimin Kim, Sang Hyun Park, Sul Gee Park†
Maritime PNT Research Office, KRISO, Daejeon 34103, Korea
†Corresponding Author: E-mail, sgpark@kriso.re.kr; Tel: +82-42-866-3685 Fax: +82-42-866-3689
The International Maritime Organization (IMO) states that the recommended horizontal accuracy for coastal and offshore areas is 10 m, the Alert Limit (AL) is 25 m, the time to alert is 10 seconds, and the integrity risk (IR) is 10-5 per three hours. For operations requiring high accuracy, such as tugs and pushers, icebreakers, and automated docking, the IMO dictates that a high level of positioning accuracy of less than one meter and a protection level of 0.25 meters (for automated docking) to 2.5 meters should be achieved. In this paper, we analyze a method of calculating the user-side protection level of the centimeterlevel precision Global Navigation Satellite System (GNSS) that is being studied to provide augmentation information for the precision Positioning, Navigation and Timing (PNT) service. In addition, we analyze standardized integrity forms based on RTCM SC-134 to propose an integrity information form and generate a centimeter-level precise PNT service plan.
GNSS, integrity, protection level
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Conceptualization, S.G.P and S.H.P; methodology, J.S.; software, J.S., G.K. and T.J.; validation, J.S., G.K., T.J. and J.S.; formal analysis, J.S., G.K. and T.J.; investigation, J.S.; resources, S.G.P, J.S., T.J., and G.K; data curation, J.S., G.K and T.J.; writing— original draft preparation, J.S.; writing—review and editing, S.G.P; supervision, S.H.P; project administration, S.G.P; funding acquisition, S.H.P.
The authors declare no conflict of interest.