【作者】 赵晓熠；

【导师】 张伟；

【作者基本信息】 哈尔滨工业大学 ， 光学工程， 2010， 硕士

【摘要】 随着空间遥感技术的不断发展,采用辐射定标方法对空间相机进行标定已经成为必然需求。然而,由于传统辐射定标器件存在的限制,使得标准灯、积分球等不能再满足大口径空间相机的全口径辐射定标需求,因此研究新型大口径空间相机的辐射定标方法已经迫在眉睫。本文在分析研究传统辐射定标方法在大口径空间相机定标中的缺陷和不足的基础上,旨在提出相应的改进及创新方案。本文在充分分析绝对辐射定标和相对辐射定标的物理意义和实际过程之后,论证了绝对、相对辐射定标的相互关系并给出了其不确定度分析方法。结合实际情况,依据本文提出的三种大口径辐射定标方法,给出了三种适合大口径空间相机辐射定标的新方案,并针对各个方案进行了不确定度分析,指出了各个方案的缺陷以及需要在未来应用中应加以改进的内容。最后,本文对各个方案的可行性进行了初步论证,并提出了未来研究的方向和工作重点。本文研究的主要工作包括以下部分:(1)分析绝对、相对辐射定标的相互影响,提出辐射定标不确定度分析方法,为后续定标方案的分析提供理论依据;(2)提出基于内置黑体的大口径空间相机全光路辐射定标方法,并在分析其定标不确定度的基础上,初步论证该方案的可行性;(3)提出基于积分球的大口径空间相机分区域辐射定标方案,并在分析其定标不确定度的基础上,初步论证该方案的可行性;(4)提出基于太阳光的大口径空间相机外场辐射定标方案,并在分析其定标不确定度的基础上,初步论证该方案的可行性。更多还原

【Abstract】 With the development of technology in remote sensing, radiometric calibration for the space camera has becoming an indispensable demand. However, the limitation of standard lamp, integrating sphere and other former radiometric calibration devices made them are not suitable for new calibration campaign, the calibration for space camera with extremely large diameter.Therefore, based on careful analysis about the former radiometric calibration campaigns, three different kinds of new methods for space camera with extremely large diameter has been put forward. Furthermore, based on analysis of relative radiometric calibration and absolute radiometric calibration, the relationship between them and the analytic methods in the whole process of radiometric calibration is carefully studied. Finally, combined with the practical instance, the thesis reveals three radiometric calibration campaigns and the analysis of uncertainty in each campaign. This paper consists of four important parts:(1) Analysis of the relationship between relative radiometric calibration and absolute radiometric calibration. A method of calculation about uncertainties in radiometric calibration is revealed;(2) The calibration campaign by using the inside blackbody for full light path calibration. Based on the analysis of uncertainty and other factors, the feasibility of the campaign is made;(3) The calibration campaign by zoning radiometric calibration. The zoning methods and the improved method by using two-dimensional pointing mirror are revealed by this thesis. Based on the analysis of uncertainty and other factors, the feasibility of the campaign is made;(4) The calibration campaign of solar-ground radiometric calibration. Based on the analysis of uncertainty and other factors, the feasibility of the campaign is made.更多还原