摘要
在工程实践中需要将GPS所测得的大地高转换为工程上所采用的正常高,由于重力数据的缺乏,常用的转换方法为GPS高程拟合法。GPS高程拟合的方法有很多,现在已有的二次曲面拟合模型和加权平均值模型的基础上,以距离平方的倒数定权,提出了加权二次曲面拟合模型,并结合实例验证了该方法的可行性。另外,为了减少手工计算量,设计了相应的计算程序。
In the engineering project, the geodetic height that GPS has measured is needed to be converted into the normal height that the engineering project often uses, but due to the lack of gravity data, the GPS elevation fitting method is commonly used. There are a lot of methods of the GPS elevation fitting. In this paper, based on the quadratic surface fitting model and the weighted average value model, an efficient weighted quadratic surface fitting model is proposed by weighting with the reciprocal of the square of the distance and applies in the real measurement. In addition, a corresponding computer program is designed to reduce the amount of manual calculation.
出处
《工程地球物理学报》
2010年第2期253-256,共4页
Chinese Journal of Engineering Geophysics
关键词
GPS高程拟合
加权二次曲面拟合
程序设计
GPS Elevation fitting
weighted quadratic surface fitting
program design
