卫星侧视成像引起的像点位移误差计算方法  

Error calculation method on image point displacement caused by satellite side-view imaging

作　　者：战鹰[1] 史良树[1] 王金强[2] 李海巍[3] 

机构地区：[1]中国土地勘测规划院,北京100035 [2]云南省航测遥感信息院,昆明650034 [3]中南大学,长沙410083

出　　处：《河南理工大学学报（自然科学版）》2015年第3期370-373,共4页Journal of Henan Polytechnic University（Natural Science）

摘　　要：目前在轨高分辨率卫星大多利用侧视成像提高其图像获取的灵活性和效率。卫星侧视成像情况下的像点位移误差的规律变得更加复杂。以航空摄影测量基本理论为基础,推导线阵CCD卫星侧视成像引起的像点位移误差计算模型,建立了像点位移误差与卫星侧视角度、像元位置、地物高度的数学关系。以Worldview-2星为例,计算得出其在不同侧视观测下、针对不同地物高度的像点位移,并对引起像点位移与影响因素之间的关系及其敏感程度进行了分析。The most of the high-resolution satellites currently used in orbit employs the side-view imaging to im- prove the flexibility and efficiency of the image acquisition. In the condition of satellite side-view imaging, im- age point displacement error becomes more complex. This study deduces image point displacement error model for a linear CCD satellite based on aero-photogrammetry basic foundation. By the model, It establishs mathe- matical relation image point displacement error with the slide-looking angle, the pixel location, and the terrain height. By taking the WorldView-2 satellite as an example, the relations between image point displacement and the influencing factors, and the performance and the sensitivity of the factors are analyzed quantitatively.

关 键 词：线阵CCD卫星 侧视成像 侧视角 像点位移 

分 类 号：U415.6[交通运输工程—道路与铁道工程]