Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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Analysis on the Integrity Monitoring Methods of High Accuracy Service of Global Navigation Satellite Systems

고정밀 위성항법서비스의 무결성 감시 방안 분석

  • Son, Pyo-Woong (Korea Research Institute of Ships and Ocean Engineering) ;
  • Park, Sul Gee (Maritime PNT Research Office) ;
  • Park, Sang Hyun (Maritime PNT Research Office) ;
  • Shin, Yujin (Autonomous Vehicle & Intelligent Robotics Program, Hongik University) ;
  • Song, Jaeyoung (Department of Mechanical Engineering, Hongik University) ;
  • Kim, Euiho (Department of Mechanical & System Design Engineering, Hongik University)
  • 손표웅 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 박슬기 (해양PNT연구단) ;
  • 박상현 (해양PNT연구단) ;
  • 신유진 (홍익대학교 자율주행.지능로봇) ;
  • 송재영 (홍익대학교 기계공학과) ;
  • 김의호 (홍익대학교 기계시스템디자인공학과)
  • Received : 2021.03.09
  • Accepted : 2021.04.28
  • Published : 2021.04.30
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Abstract

International Maritime Organization (IMO) recommends maintaining a positioning accuracy of global satellite navigation system (GNSS) within the range of 10 cm and monitoring its integrity. In order to provide the positioning accuracy of 10 cm or better, high-precision correction information must be used based on the carrier phase of the satellite signal. Furthermore, in order to monitor the integrity of this, the errors should be overbounded in the process of generating correction. In this paper, we analyze the GNSS integrity monitoring methods in high-precision position service currently in operation. The integrity monitoring technique of the wide area augmentation system (WAAS) of the U.S. is studied. As a conclusion, we propose the integrity monitoring method of Korean high-precision GNSS service in maritime area.

육상에서 자율주행차량이 본격적으로 개발됨에 따라 해상에서도 자율주행선박에 대한 국제적 논의가 계속되고 있고, 국제해사기구(IMO; International Maritime Organization)에서는 위성항법시스템을 이용해 10 cm 이하의 위치 정확도를 무결성 감시 기능과 함께 보장하도록 권고하고 있다. 10 cm 이하의 위치 정확도 성능을 제공하기 위해서는 위성신호의 반송파를 기반으로 고정밀 보정정보를 사용해야 한다. 또한 이에 대한 무결성을 감시하기 위해서는 각 보정정보 생성 과정에서 발생하는 오차를 overbounding 할 수 있어야 한다. 본 논문에서는 현재 운용되고 있는 고정밀 위성항법서비스 무결성 감시 방안에 대해 분석한다. 또한 미국에서 운용 중인 위성 기반의 광역보강시스템(WAAS; wide area augmentation system)의 무결성 감시기법을 분석하고, 해양 지역에서의 고정밀 위성항법서비스의 무결성 감시 방안을 도출하였다.

Keywords

Acknowledgement

본 논문은 해양수산부 국가연구개발과정 "지상기반 센티미터급 정밀 PNT 기술개발"으로 수행된 연구결과입니다(PMS4650).

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