한국항공운항학회지 (Journal of the Korean Society for Aviation and Aeronautics)
- 제15권1호
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- Pages.11-17
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- 2007
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- 1225-9705(pISSN)
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- 2466-1791(eISSN)
준천정 위성 궤도 특성 및 항법정보 연구
Study of Quasi Zenith Satellite Orbit and Navigation Messages
초록
One of the key elements for developing GNSS (Global Navigation Satellite Systems) is the comprehensive analysis of GNSS satellite orbit including the capabilities to generate precision navigation message. The orbit characteristics of Japan's own GNSS system, called QZSS (Quasi Zenith Satellite System) is analyzed and its navigation message, which includes orbit elements and correction terms, is investigated. QZSS-type orbit simulations were performed using a precision orbit integrator in order to analyze the effect of perturbation forces, e.g. gravity, Moon, Sun, etc., on the orbit variation. A preliminary algorithm for creating orbit element corrections was developed and its accuracy is evaluated with the simulation data.