施工坐标(A,B)与大地测量坐标(X,Y)之间的几种换算方法

Conversion Method between Construction Coordinate (A, B)and Land Measuring Coordinate (X, Y)

总图设计施工图阶段，常常引入施工坐标系，施工坐标值与大地测量坐标值之间就存在一个换算问题。本文针对建北与磁北不一致时（即施工坐标系与大地测量坐标系之间有一旋转角θ），结合工程实践，归纳总结出五种简便易行的坐标换算方法。

During design of job drawings there is conversion between construction coordinate andland measuring coordinate. The article summarizes five sorts of easy conversion methods.