定向片模型描述的“天绘一号”卫星影像区域网平差  

Bundle Adjustment of TH-1 Satellite Described by Orientation Image Model

作　　者：刘建辉[1] 姜挺[1] 江刚武[1] 李厚朴[2] 

机构地区：[1]信息工程大学地理空间信息学院,郑州450001 [2]海军工程大学导航工程系,武汉430033

出　　处：《航天返回与遥感》2015年第2期53-59,共7页Spacecraft Recovery & Remote Sensing

基　　金：国家自然科学基金(41471387)

摘　　要：针对三线阵相机的成像特点,文章利用卫星辅助数据建立了"天绘一号"卫星三线阵影像的严密成像模型,在常规定向片模型描述外方位元素变化特征的基础上,考虑定向片间的连续平滑制约条件,并将其引入摄影测量光束法平差中,从而构建"天绘一号"卫星三线阵影像光束法平差模型,最后利用真实影像数据进行实验验证。结果表明,在一定数量地面控制点参与条件下,合适的定向片数目选取并顾及定向片间的连续平滑制约条件,检查点能够达到平面方向约为1.5个像元、高程方向优于1个像元的定位精度,验证了该文所建模型的正确性和有效性。AbstractFor the characteristic of three-line-array camera system, the rigorous geometric model of the TH-1 satellite’s three-line-array sensor is constructed, based on the variational character of exterior parameters described by the regular orientation image model, the continuous smooth constraint is considered and this representation is introduced into photogrammetry bundle adjustment, thus the TH-1 satellite’s bundle adjustment model is established. Finally by using the real image data, the bundle adjustments are researched. The results show that by using some ground control points and proper orientation image fixes with continuous smooth constraint, the planar accuracy of the check points can reach about 1.5 GSD, the vertical accuracy can reach better than 1 GSD, and the results verify the correctness and effectiveness of the model constructed.

关 键 词：三线阵影像 定向片模型 外方位元素 光束法平差 “天绘一号”卫星 

分 类 号：P237[天文地球—摄影测量与遥感]