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논문 기본 정보

자료유형
학술저널
저자정보
Bae, Tae-Suk (Sejong University) Hong, Chang-Ki (Kyungil University) Lee, Jisun (University of Seoul) Zuheir Altamimi (Université Paris Diderot) Patrick Sillard (Institut Géographique National) Claude Boucher (Institut Géographique National)
저널정보
한국측량학회 한국측량학회지 한국측량학회지 제39권 제5호
발행연도
2021.10
수록면
313 - 319 (7page)

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The national geodetic reference frame of Korea was adopted in 2003, which is referenced to ITRF (International Terrestrial Reference Frame) 2000 at the epoch of January 1, 2002. For precise positioning based on the satellites, it should be thoroughly maintained to the newest global reference frame. Other than plate tectonic motion, there are significant events or changes such as earthquakes, antenna replacement, PSD (Post-Seismic Deformation), seasonal variation etc. We processed three years of GNSS (Global Navigation Satellite System) data(60 NGII CORS stations, 51 IGS core stations) to produce daily solutions minimally constrained to ITRF. From the time series of daily solutions, the sites with unexpected discontinuity were identified to set up an event(mostly antenna replacement). The combined solution with minimum constraints was estimated along with the velocity, the offsets, and the periodic signals. The residuals show that the surrounding environment also affects the time series to a certain degree, thus it should be improved eventually. The transformation parameters to ITRF2014 were calculated with stability and consistency, which means the national geodetic reference frame is properly aligned to the global reference frame.

목차

Abstract
1. Introduction
2. GNSS CORS Network
3. Optimal Selection of CORS
4. Establishment of Geodetic Reference Frame
5. Summary and Conclusion
References

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