附加约束条件的光束法区域网平差在四拼数码航空相机平台检校中的应用

摘要

介绍针对四拼数码航空相机的附加约束条件光束法区域网平差原理，包括计算四拼相机外方位元素，并同时计算四台子相机的相对位置关系，获取了四拼相机平台检校参数。试验结果表明采用该方法计算得到的平台检校参数精度高，生成的虚拟影像拼接效果好，空三精度满足大中比例尺地形图规范要求。%A method of bundle block adjustment with constraint conditions aimed at the four-head aerial digital camera is presented .The exterior orientation parameters of camera and relative positions of sub-cameras are calculated to derive platform calibration parameters .Experimental results verify that the precision of platform calibration parameters calculated with this method is high ,the quality of virtual images is good ,and the aerial triangulation precision satisfies the large scale and medium scale specifications of surveying .