RTKGPS测量中坐标转换参数求解若干方法讨论

The discussion on several methods of solving coordinate transformation parameters in RTKGPS surveying

RTKGPS测量技术在中国已广泛应用 ,但其测量成果属于WGS - 84坐标系 ,只有将其转换到国家坐标系或地方坐标系中才能使用 ,所以不同坐标系统间转换参数的正确求解是RTKGPS技术应用的关键。介绍了几种RTKGPS测量中坐标转换参数求解的方法及其数学模型 。

RTKGPS surveying has been applied widely in China. Its results belong to the WGS-84 coordinate system. In practical application, the coordinate must be transformed from the WGS-84 coordinate system to the national coordinate system or the local independence coordinate system. So it is a key problem to solve the coordinate transformation parameters correctly in different coordinate system for the application of RTKGPS surveying. This paper provides several methods and their mathematic models for calculating coordinate transformation parameters in coordinate system transformation which are applied in RTKGPS surveying, and introduces several fitting methods in the transformation between geodetic heights and normal heights.