The Study Of Riadiometric Calibration For Staring Camera With Large Diameter

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.