数字摄影测量系统,主要功能有内定向、相片纠正、后方交会和前方交会、连续像对相对定向和绝对定向、单独像对相对定向和绝对定向、一步法定向。-Digital photogrammetric system, the main function in orientation, photo correction, resection and intersection in front of a row as the relative orientation and absolute orientation,