单像空间后方交会程序,通过控制点的在大地坐标系中的坐标与图像在图像坐标系中的对应关系，应用共线方程的知识，计算出外方位元Xs,Ys,Zs.-By geodetic coordinate system coordinates and image control point correspondence between the image coordinate system, knowledge application collinear equations to calculate the ori