大地高对布尔莎坐标转换模型的转换精度影响研究  

Influence study on geodetic height on accuracy of coordinate transformation in Bursa Model of coordinate transformation

作　　者：焦利伟[1] Jiao Liwei(Geophysical Survey Brigade of Henan Coal Geology Bureau, Zhengzhou 450009, Chin)

机构地区：[1]河南省煤田地质局物探测量队,河南郑州450009

出　　处：《能源与环保》2018年第8期104-107,共4页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

摘　　要：以某市控制测量项目的 GPS点成果数据为例,基于布尔莎模型大地高误差对坐标转换精度的影响进行以常见的3种高程系统(以1985国家高程代替大地高;利用高程异常估算大地高;将大地高置0)进行坐标转换试验,认为"原坐标系使用正常高,目标坐标系使用大地高"进行坐标转换时既能达到较高的转换精度又较为符合实际工作情况。Using the GPS control point of a city as an example,coordinate transformation based on Bursa Model was used to analyze the influence of geodetic height, providing instruction of a practical work. The experiment was an implenlent of coordinate transformation u- sing three height systems （national elevation system of 1985;the estimation of geodetic height using height anomaly; make geodetic height set to 0）. It was believed that when the original coordinate system was used with normal height and the target coordinate system was used with geodetic height, the coordinate transformation can not only achieve higher conversion accuracy but also coliform to the ac- tual working conditions.

关 键 词：布尔莎模型 大地高 坐标转换精度 

分 类 号：P226.3[天文地球—大地测量学与测量工程]