基于DMC-Ⅱ数码航空摄影测量区域网布设研究

从航空摄影到基础地理信息数据产品的获取包括航空摄影、地面控制、空三加密、内业测图等几个阶段。相片控制测量是航空摄影测量的基础工作,通过空三加密获得内业测图所需的外方位元素数据。随着DMC等数字航摄仪应用到航测生产领域当中,DMC影像数据在全数字摄影测量中发挥了越来越重要的作用。本文利用DMC-II数码航空影像,通过实验对DMC-II数字航摄资料的在西南控制困难地区外业像控的布点方案、基线数量、点位位置采取不同方案进行内业加密问题进行研究、分析,总结区域网布点方案的规律性。

Experimental Research on Aerial Triangulation for DMC-II Aerial Photograph

There need four steps to acquire basic geographic data from aerial photography, i.e., ground control, aerial photography, office mapping and aerial triangulation. Ground photo control-point survey work is the basic work within the industry for mapping the elements of exterior orientation data. With DMC and other digital aerial cameras began to be applied for aerial photogrammetry production area, DMC image data plays more and more important role in photogrammetry. In this paper, making use of DMC-II aerial photograph, we conduct research, analysis and summary on the problems of aerial triangulation by taking a different program of control points distribution, baseline amounts and point location. Finally, it summarizes the regularity of DMC-II in full digital photogrammetry.