航天摄影测量数字化试验场建立及应用  

Establishment and Application of Digital Test Field for Space Photogrammetry

作　　者：韩涛 李志勇 王建春 李开滢 

机构地区：[1]测绘信息技术总站

出　　处：《测绘科学与工程》2012年第1期38-41,58,共5页Geomatics Science and Engineering

摘　　要：航天摄影测量是快速高精度获取全球地理空间信息的最有效手段。航天相机在发射和在轨运行过程中，受震动、冲击、气压等多种因素的综合影响，其内方位元素等摄影测量参数会发生微小变化，直接影响所获取的地理空间信息产品精度。基于摄影测量原理，在地面建设合适的试验场，通过处理后可获取航天相机在轨期间的摄影测量参数。建立地面试验场主要有布设标志法、全野外测量法以及数字化法三种途径，本文分析了这三种技术途径的优缺点，认为数字化法具有更高的性价比，主要介绍了数字化试验场的建立及应用的基本流程。Space photogrammetry is the most effective way to rapidly acquire high accuracy, global geospatial information. During the launching and orbiting process, because of the influence of comprehensive factors such as vibration, impact, air pressure and so on, photogrammetry parameters like interior orientation elements will show slight variations, which have a direct effect on the accuracy of acquired geospatial information product. Generally, according to the photogrammetry principle, based on proper ground test field, the orbiting photogrammetry parameters of space camera can be acquired after processing. There are three technical approaches to establish ground test field, laying marks, all - field surveying and digitalizing. The advantages and disadvantages of the three approaches were analyzed in this paper, and it was concluded that digitalization was the most cost efficient way, therefore the establishment and application process of digital test field were introduced.

关 键 词：航天摄影测量 数字化试验场 摄影测量参数 检校 

分 类 号：P236[天文地球—摄影测量与遥感]