泉州市大地水准面精化及其应用

Refinement of Quanzhou Geoid and Its Application

本文介绍了在泉州市完成分辨率较高、精度较好的GPS/水准网布测与数据处理的基础上,充分利用泉州市及周边地区陆地重力测量资料、国内外先进的地球重力场模型,采用先进的大地水准面确定理论与方法,应用remove—restore技术完成了泉州市规划区高精度的似大地水准面的确定工作;同时,利用GPS定位技术结合区域性高精度大地水准面成果,探讨解决大比例尺成图像控点高程的测定问题,真正实现利用GPS技术精确确定平面位置的同时,也精确测定了高程,充分发挥GPS测量精度高、快速、灵活的特点与优势,极大地提高了生产效率。

On the basis of finishing higher resolution and data of high precision GPS and leveling, the geoid determination of Quanzhou high precision is completed by some means, such as making full use of gravity survey data of Quanzhou City and the surrounding areas and advanced model of the Earth＇s gravitational field in domestic and foreign, and applying remove-restore technical that is an advanced geoid theory and method. At the same time, the problems are studied that the surveying of photo control points in height in large-scale mapping using GPS technology with precision regional geoid results, and will really realize to determinate height at the same time of determination of plane location using GPS technology. That can full play the features and advantages of GPS in high accuracy, fast, flexible, which has greatly increased production efficiency.