推扫式光学卫星影像系统几何校正产品的3维几何模型及定向算法研究  

Study of Three-dimensional Geometric Model and Orientation Algorithms for Systemic Geometric Correction Product of Push-broom Optical Satellite Image

作　　者：张过[1,2] 厉芳婷[3] 江万寿[1] 翟亮[2] 唐新明[2] 

机构地区：[1]武汉大学测绘遥感信息工程国家重点实验室,湖北武汉430079 [2]中国测绘科学研究院,北京100039 [3]中国电子科技集团公司第十研究所,四川成都610036

出　　处：《测绘学报》2010年第1期34-38,共5页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金(40601084;40523005;40801178);国家863计划(2007AA120203;2009AA12Z145);科技部国际合作项目(2006DFA71570);地理空间信息工程国家测绘局重点实验室开放基金(A1721)

摘　　要：提出推扫式光学卫星影像系统几何校正产品的3维几何模型的概念,在推导推扫式光学卫星影像系统几何校正产品的3维几何模型基础上,对RPC模型用于表示推扫式光学卫星影像系统几何校正产品的3维几何模型的可行性进行分析,并用SPOT5HRG影像以进行验证。实验表明,RPC模型能够很好地用于表示推扫式光学卫星影像系统几何校正产品的高程起伏引起的变形规律,基于该模型的影像定向精度不低于推扫式光学卫星影像辐射校正产品的严密成像几何模型。In general, the systemic geometric correction product of push-broom optical satellite image uses a pure two-dimensional affine transformation geometric model, However, this affine transformation geometric model ignores the deformation caused by uncorrected elevation variation during the geometric correction process, In order to solve that problem, it proposed a conceptual three-dimensional geometric model for systemic geometric correc- tion product, On the basis of deducing three-dimensional geometric model, it also analyzed the feasibility of applying the RPC model to replace this three-dimensional geometric model, which SPOT 5 HRG images were used to verify, The result of the experiment indicates that the RPC model accurately identifies the deformation pattern for the geometrical correction product of push-broom optical satellite image. The RPC model simplifies three-dimensional geometric model for systemic geometric correction product, but does not compromise its accuracy.

关 键 词：系统几何校正产品 3维几何模型 RPC模型 模型定向 SPOT 5 

分 类 号：P237[天文地球—摄影测量与遥感]