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논문 기본 정보

자료유형
학술저널
저자정보
Jung, Sung Chae (University of Seoul) Kwon, Jay Hyoun (University of Seoul) Lee, Jisun (University of Seoul)
저널정보
한국측량학회 한국측량학회지 한국측량학회지 제36권 제1호
발행연도
2018.2
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1 - 8 (8page)

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초록· 키워드

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To compensate for the shortcomings of spirit leveling, research on the determination of GNSS (Global Navigation Satellite System)-derived orthometric height has been actively carried out. However, most analyses were primarily performed inland. In this study, the influences of the arrangement of control points, observation duration, and geoid model on the accuracy of the GNSS-derived orthometric height have been analyzed to suggest the proper method to apply the determination of GNSS-derived orthometric height to the leveling loop disconnected area. As a result, it was found that two known points located near the unknown points need to be fixed in the leveling loop disconnected area. Further, 3 cm level of accuracy can be achieved if the GNSS survey is performed over two days, for four hours per day. In terms of the geoid model, the latest national geoid model should be applied rather than the EGM08 (Earth Gravitational Model 2008) to minimize regional bias and increase accuracy. Future research is necessary to apply the determination of the GNSS-derived orthometric height technique as a method to connect with the islands because the vertical reference system used inland and that used for the islands in Korea are still different.

목차

Abstract
1. Introduction
2. Methodology
3. Test Area
4. Accuracy Analysis of GNSS-derived Orthometric Heights
5. Summary and Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2018-533-001807408