Research on Transferring the National Height System to the Island

• 발행기관: 한국항해항만학회
• 저자명: Yanxiong LIU Xinghua ZHOU Lin PENG Yongtong WU
• 간행물 정보: 『한국항해항만학회 학술대회논문집』2006년도 International Symposium on GPS/GNSS Vol.1, 1~3쪽, 전체 3쪽
• 주제분류: 공학 > 해양공학
• 파일형태: PDF
• 발행일자: 2006.10.24

영문 초록

It is quite difficult to transfer the National Height System 1985 to the island in China. In the study, one feasible and alternative way, which measures synchronally the tide variation at the island and the coast , is firstly introduced. Then, a new method is proposed. This new method combines GPS technique and Quasi-Geoid Determination technique (GQGD). It needs gravity data, GPS data, leveling data and DEM data, together with complex calculation method and the Earth gravity model. After describing the mathematical model and presenting the calculational steps, one experiment has been shown that this method is valid and can achieve accuracy up to 5 cm for the normal height, compared with the results both from the tidal observation and height approximation. Some suggestion is also given in the end.

목차

1. Introduction

2. Tidal Observation

3. GPS combined Quasi-Geoid Determination

4. Method of determining the quasi-geoid over theoffing

5. Experiment

6. Accuracy analysis

7. Conclusion and suggestion

키워드

GPS-leveling Tidal Observation Quasi-Geoid Normal Height