Preliminary Study of Ionosphere for Global Navigation Satellite Systems

위성항법시스템 적용을 위한 전리층 기본 연구

  • 양태형 (한국항공대학교 항공우주 및 기계공학부) ;
  • 이영재 (건국대학교 기계항공공학부) ;
  • 전향식 (한국항공우주연구원 항행체계그룹) ;
  • 남기욱 (한국항공우주연구원 항행체계그룹) ;
  • 김정래 (한국항공대학교 항공우주 및 기계공학부)
  • Published : 2006.03.31


Ionospheric signal delay is a critical factor for precision differential GNSS(Global Navigation Satellite Systems) applications such as GBAS(Ground-Based Augmentation System) and SBAS (Satellite-Based Augmentation System). Most concern is the impact of the ionospheric storm caused by the interaction between Solar and geomagnetic activities. After brief description of the ionosphere and ionospheric storm, ionospheric models for SBAS are discussed. History of recent ionospheric storms is reviewed and their impact on GNSS is discussed. In order to support Korean GNSS augmentation system development, a preliminary study on the regional ionosphere performed. A software tool for computing regional ionospheric maps is being developed, and initial results during a recent storm period is analyzed.