Journal of Positioning, Navigation, and Timing

The Institute of Positioning, Navigation, and Timing (항법시스템학회)
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Study on a Method for Performance Evaluation and Analysis of TWSTFT Modems

TWSTFT 모뎀의 성능평가방안 및 성능분석

  • Juhyun Lee (Time and Frequency Group, Strategic Technology Research, Korea Research Institute of Standards and Science (KRISS)) ;
  • Ju-Ik Oh (Time and Frequency Group, Strategic Technology Research, Korea Research Institute of Standards and Science (KRISS)) ;
  • Joon Hyo Rhee (Time and Frequency Group, Strategic Technology Research, Korea Research Institute of Standards and Science (KRISS)) ;
  • Gyeong Won Choi (Time and Frequency Group, Strategic Technology Research, Korea Research Institute of Standards and Science (KRISS)) ;
  • Jong Koo Lee (Time and Frequency Group, Strategic Technology Research, Korea Research Institute of Standards and Science (KRISS)) ;
  • Sung-hoon Yang (Time and Frequency Group, Strategic Technology Research, Korea Research Institute of Standards and Science (KRISS)) ;
  • Youn-Jeong Heo (Time and Frequency Group, Strategic Technology Research, Korea Research Institute of Standards and Science (KRISS)) ;
  • Dai-Hyuk Yu (Time and Frequency Group, Strategic Technology Research, Korea Research Institute of Standards and Science (KRISS)) ;
  • Myoung-Sun Heo (Time and Frequency Group, Strategic Technology Research, Korea Research Institute of Standards and Science (KRISS)) ;
  • Young Kyu Lee (Time and Frequency Group, Strategic Technology Research, Korea Research Institute of Standards and Science (KRISS))
  • 이주현 ;
  • 오주익 ;
  • 이준효 ;
  • 최경원 ;
  • 이종구 ;
  • 양성훈 ;
  • 허윤정 ;
  • 유대혁 ;
  • 허명선 ;
  • 이영규
  • Received : 2024.08.16
  • Accepted : 2024.08.30
  • Published : 2024.09.15
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Abstract

Time synchronization is crucial for ensuring the reliable operation of modern economic and social infrastructures. Techniques such as Global Navigation Satellite System (GNSS)-based methods and Two-Way Satellite Time and Frequency Transfer (TWSTFT) play key roles in precise time comparison and synchronization. TWSTFT, in particular, is recognized for its ability to achieve sub-nanosecond accuracy in time transfer, making it indispensable in fields such as satellite navigation. This paper proposes a comprehensive performance evaluation method for TWSTFT modems, emphasizing pre-validation in controlled environments to mitigate operational challenges. Using the proposed evaluation method, the study presents the standard deviation of RTT according to C/N0 and compares it with the datasheet of a commercial TWSTFT modem. Through this approach, the aim of this study is to enhance the reliability and accuracy of TWSTFT-based time synchronization across diverse applications.

Keywords

Acknowledgement

이 논문은 2024년도 해양수산부 재원으로 해양수산과학기술진흥원의 지원을 받아 수행된 연구임(RS-2024-00407003, 지상파항법시스템 고도화 기술개발사업).

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