Journal of Positioning, Navigation, and Timing

  • 제13권3호
  • /
  • Pages.319-329
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  • 2024
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  • 2288-8187(pISSN)
  • /
  • 2289-0866(eISSN)
항법시스템학회 (The Institute of Positioning, Navigation, and Timing)
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GPS CNAV, QZSS LNAV/CNAV 및 BDS CNAV/CNAV-2의 방송 주기와 시퀀스에 대한 실험적 분석

An Experimental Investigation on Broadcast Intervals and Sequences of GPS CNAV, QZSS LNAV/CNAV, and BDS CNAV/CNAV-2

  • 김기현 ;
  • 조용래 ;
  • 박병운 ;
  • 김오종
  • Kihyun Kim (Department of Aerospace Engineering, Sejong University) ;
  • Yongrae Jo (Department of Aerospace Engineering, Sejong University) ;
  • Byungwoon Park (Department of Aerospace Engineering, Sejong University) ;
  • O-Jong Kim (Department of Aerospace Engineering, Sejong University)
  • 투고 : 2024.05.16
  • 심사 : 2024.07.26
  • 발행 : 2024.09.15
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초록

Various structures of navigation messages in Global Navigation Satellite System (GNSS) signals can be categorized into fixed, packetized, and mixed types, each with different broadcast intervals and sequences. In the fixed format, the broadcast intervals and sequences of navigation messages of Global Positioning System (GPS) L1 C/A and BDS B1I are strictly defined in the Interface Control Document (ICD). Navigation messages of GPS L2C, L5, Quasi-Zenith Satellite System (QZSS) L2C, L5, and BeiDou Navigation Satellite System (BDS) B1C are in a packetized format, and their broadcast sequence is not explicitly specified in the ICD; only the maximum broadcast intervals are described. In the mixed format, signals such as GPS L1C, QZSS L1 C/A, L1C, and BDS B2a exhibit both fixed and packetized patterns. Sequences of certain parts of the message are not defined. Therefore, in this study, experimental-based investigations were additionally conducted alongside an ICD investigation to analyze the current broadcast intervals and sequences of GNSS navigation messages.

키워드

과제정보

This work was supported by the Agency for Defense Development by the Korean Government (UD230019TD).

참고문헌

  1. BeiDou ICD 2017a, BeiDou navigation satellite system signal in space interface Control Document, Open Service Signal B1C (Version 1.0), China Satellite Navigation Office. http://en.beidou.gov.cn/SYSTEMS/ICD/201806/P020180608519640359959.pdf
  2. BeiDou ICD 2017b, BeiDou navigation satellite system signal in space interface Control Document, Open Service Signal B2a (Version 1.0), China Satellite Navigation Office. http://en.beidou.gov.cn/SYSTEMS/ICD/201806/P020180608518432765621.pdf
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  7. IS-GPS-705J 2022, Global Positioning System Directorate Systems Engineering & Integration Interface Specification, 705J, Navstar GPS Space Segment / Navigation user segment interfaces. USA: Navstar GPS Joint Program Office. https://www.gps.gov/technical/icwg/IS-GPS-705J.pdf
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  9. IS-QZSS-PNT-005 2022, Quasi-Zenith Satellite System Interface Specification Satellite Positioning, Navigation and Timing Service (IS-QZSS-PNT-005). https://qzss.go.jp/en/technical/download/pdf/ps-is-qzss/is-qzsspnt-005.pdf?t=1713872793121
  10. Noh, J. H., Jo, G. H., Lee, J. Y., & Lee, S. J. 2022, Performance Analysis of GNSS Navigation Messages in the Structure Viewpoint, Journal of Positioning, Navigation, and Timing, 11, 135-146. https://doi.org/10.11003/JPNT.2022.11.2.135