We use linear regression analyses to get coordinate conversionparameter and make the result is optimal.
使用线性回归分析来求解坐标系拟合参数，从而得到最优化的效果。
2
Then the synoptical conversionparameter is calculated by control coordinates and photogrammetric coordinates of three control points.
由控制点的已知控制坐标与求得的摄站坐标系下的坐标，进一步求得两坐标系的转换参数的初值；
3
Returns the data associated with the specified data format, using an automated conversionparameter to determine whether to convert the data to the format.