前方交会，结算地面点，数字摄影测量的必经之路。本程序，可以实现量测和非量测相机的前方交会计算。对于非量测相机，需要用DLT得到畸变参数，用序贯法得到的畸变参数还是很准的。-Forward intersection, clearing the ground point, the only way of digital photogrammetry. This procedure can achieve the measurement and non-measurement camera forward intersection calculation. Distortion parameters for non measurements camera, with DLT distortion parameters by the sequential method is still very accurate.