利用重力位差进行跨海高程基准传递的精度分析  

Accuracy Analysis of Height Datum Transference within Across Sea Based on Gravity Potential Differences

作　　者：徐天[1] 朱紫阳[1] 

机构地区：[1]广东省国土资源测绘院,广东广州510500

出　　处：《地理空间信息》2014年第3期121-124,8-9,共4页Geospatial Information

摘　　要：基于GPS重力位水准原理,研究利用重力位差实现广东沿海地区跨海高程基准传递的可行性及其精度。利用湛江市GPS/水准数据进行有关实验研究,结果表明,利用重力位差进行跨海高程传递,在实验区域高程传递中误差小于6 cm,满足广东沿海地区跨海高程基准传递的精度要求。Based on GPS gravity level principle, this article discussed the feasibility and its precision of the coastal areas of Guangdong sea height datum transfer using gravity potential difference. Using Zhanjiang GPS/leveling data for relevant experimental study, the results show that elevation transmission error is less than 6 cm in the experimental area, which meets the precision of the coastal areas of Guangdong sea-crossing elevation datum transfer request.

关 键 词：重力位差 跨海高程基准传递 平均正常重力 地球重力场模型 

分 类 号：P226[天文地球—大地测量学与测量工程]