大地元素实现坐标系统转换的数学模型

A mathematical model of coordinate transformation based on geodetic elements

本文在分析传统转换模型特点的基础上,给出一个基于新型大地坐标系、以大地元素为转换参数的坐标系统转换模型;并结合已有数据,对应用传统数学模型与新模型实现坐标系统转换进行比较分析。结果表明,应用新模型实现坐标系统间的转换更加适合我国坐标数据的现状,并且在转换过程中无需顾及由于投影引起的变形误差的影响。

On the basis of analyzing the characteristics of the traditional conversion models, the paper gave a coordinate transformation model on the new geodetic coordinate system taking geodetic elements as parameters. Combining with the known data, it comparatively analyzed the results of applying the tradi- tional models and the new model to achieve coordinate transformation. It was shown that the new model would be more suit for China current coordinate data status, by which it is not necessary to take into ac- count the effect due to the error of projection deformation.