空间后方交汇求解相机外方位元素，变量如下

％ x，y 控制点像点坐标

％ X，Y，Z 控制点空间坐标

％f焦距

％X0，Y0，Z0，a，b，c六个外方位元素

％x0，y0，-f内方位元素：光心坐标

％cha，chb，chc：外方位角元素改正数

％count 记录迭代次数

％R 旋转矩阵

％A 线性化的偏导系数矩阵

％L 常数项矩阵

％M0 外方位元素矩阵

％M1 外方位元素改正数矩阵-meeting space for rear camera position outside elements, as follows% variable x, y control point pixel coordinates% X, Y, Z coordinates control room focal length f%% X0, Y0, Z0, a, b, c 6 exterior orientation elements% x0, y0, - f position within elements : Optical Center coordinates% cha, chb, chc : Foreign elements azimuth correction% record count the number of iterations rotation matrix R%% A linear partial derivative of the coefficient matrix% L constant Matrix% M0 Orientation% M1 matrix elements of exterior orientation correction matrix