多角度偏振遥感相机DPC在轨偏振定标

In-flight polarization calibration methods of directional polarized remote sensing camera DPC

为了做好卫星数据应用的技术储备,多角度偏振遥感相机DPC航空预研版已经研制成功并完成了航空飞行实验.DPC相机用于获取地气系统反射的偏振、多角度的太阳辐射信息,其地气物理参数反演依赖于定标的精度.偏振相机的辐射定标包括强度和偏振两个方面.本文研究偏振遥感相机的偏振参数的在轨定标原理与方法.基于偏振遥感相机的设计原理,以相机的偏振辐射模型为基础,探索偏振定标的原理和方法.使用DPC航空遥感实验数据,初步实现了在轨偏振定标并对定标结果进行了分析.为将来我国自主星载偏振遥感数据处理和在轨偏振定标提供理论基础.

In order to make a good use of Chinese polarized satellite sensor, the directional polarized camera （DPC） has been developed and tested in the flight experiments. DPC camera is designed to observe the polarized and directional reflected radiation of the earth-atmosphere system. Retrieval of physical parameters from DPC data depends on the accuracy of calibration. The polarized camera radiative calibration includes two aspects： intensity and polarization. Based on the predecessors＇ work, we explore the polarization calibration principles and methods. Using the DPC aerial remote sensing experiment data, we have realized the polarization calibration and analyzed the results. This work may contribute to fundamental basis for the data processing and in-flight calibration of the future Chinese polarized satellite sensor.