基于VC++的坐标系统转换程序设计与实现

The Programme Design and Realization of Coordinate Conversion Based VC++

坐标系统转换一直是专业性强且不易解决的问题.根据不同参考椭球和相同参考椭球的坐标系转换原理,论述了利用VC++编制不同坐标系统转换和坐标换带软件编制过程的关键技术、软件功能,利用VC++语言定义了相应的结构体和不同的类,实现了不同参考椭球情况下七参数、四参数的计算过程、不同坐标系统的坐标转换和坐标换带计算程序化,并以某个矿山的实际数据对软件进行了验证.结果表明该系统运行可靠、操作方便、计算结果能满足精度要求.图1,表2,参8.

Coordinate transformation is a professional problem which is difficult to solve. Based on the coordinate transformation principle of both different reference ellipsoids and similar reference ellipsoids, a computation software for coordinate transformation among different coordinate systems and between two projection zones was developed. And the key techniques of programming the software as well as the fimctions of it were introduced. Some structure bodies and different classes were defined by the VC＋＋ language, realizing the computation of 4 parameters as well as 7 parameters under the condition of different reference ellipsoids and the computation program for co-ordinate transformation and strip exchange of the co-ordinates among different coordinate systems. Finally, the applicability and accuracy of the software were verified by a set of coordinate data in a mining practice. Resutt indicate that the software is reliable and simple in operation, which meet the requirement of accuracy, lfig., 2tabs. ,8refs.