基于摄影测量学中四个控制点的单片后方交会-based photographic surveying four control points Monolithic Resection

摄影测量中的内定向，后方交会，前方交会，相对定向，功能基本上满足了摄影测量的需求。-Photogrammetry in orientation, resection, forward intersection, relative orientation, function basically meet the needs of photogrammetry.

程序实现后方交会的功能，求出影像的六个外方位元素。-Procedures to achieve resection of the function, find the image of the six exterior orientation elements.