Local Quasi-Geoid Refinement based on Spherical Cap Harmonic Model

摘要：

　　The local quasi-geoid model up to centimeter precision has became the basic requirement for the development of modem surveying and mapping science.There are a variety of models can be used for the quasi-geoid refinement, including the spherical cap harmonic model (SCH).This paper studies the theory of SCH to get the spherical cap harmonic expression to fit the height anomaly in the least squares sense, which is to achieve the transformation between the geodetic height and the normal height.We also discuss the selection of the maximum model degree in local region.The practical case is studied to refine the local quasi-geoid model with SCH using GPS/leveling data at 85 points.The results indicate that the local quasi-geoid model can reach 3 centimeter-level at the internal and extemal fitting precision.

关键词： Spherical cap harmonic model GPS/leveling Local quasi-geoid model

作者: Jinyun Guo Shuyang Wang Guowei Li Weihua Mao Yuanming Ji

作者单位: College of Geodesy and Geomatics,Shandong University of Science and Technology,Qingdao 266590,China; Zhejiang Academy of Surveying and Mapping,Hangzhou 310012,China

会议类型: 国际会议

会议名称: the 2012 International Conference on Vibration, Structural Engineering and Measurement (2012年振动、结构工程与测量国际会议(ICVSEM2012))

会议地点: 上海

会议语种:英文

页码: 1947-1950

在线出版日期: 2012-10-19（万方平台首次上网日期，不代表论文的发表时间）