两种七参数坐标转换方法

摘要

This paper presents different methods to get seven-parameter and introduces how to use it to convert WGS84 coordinates to XI'AN80 coordinates. The differences of the two methods are analyzed and the possible problems in practice are pointed out.%文章给出了获取七参数的不同方法，介绍了如何转换西安80坐标系坐标，比较了两种方法的不同，强调了各种实际情况下应该注意的问题。