한국항공운항학회지 (Journal of the Korean Society for Aviation and Aeronautics)
- 제14권1호
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- Pages.55-62
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- 2006
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- 1225-9705(pISSN)
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- 2466-1791(eISSN)
위성항법시스템 적용을 위한 전리층 기본 연구
Preliminary Study of Ionosphere for Global Navigation Satellite Systems
초록
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.