摘要
同一卫星观测平台上的不同偏振遥感器,可通过数据融合获取更高质量的探测结果。基于该设想,搭建了由高精度偏振扫描仪(POSP)和同时偏振相机(SIPC)构成的同平台偏振仪器航空验证系统,并完成了飞行实验。文章系统阐述了其系统构成、数据预处理、视场匹配和交叉定标方法,评估并展示了部分航空验证结果。结果表明:POSP和SIPC视场匹配误差约为0.12个POSP像元;通过偏振交叉定标、均匀陆地地表这2个仪器辐亮度偏差为2.54%,偏振度偏差为0.013,验证了双偏振仪器探测数据的有效性和交叉定标的可行性。为星载偏振交火探测系统设计、数据预处理、偏振交叉定标方法和在轨应用评价等提供了依据和支持。
The polarimetric remote sensing instruments on a single satellite observation platform can achieve higher quality detection results through data fusion.To validate this concept,a polarimeter airborne validation system,which consists of a particulate observing scanning polarimeter(POSP)and a simultaneous imaging polarization camera(SIPC),is developed,and the related flight experiments are conducted.In this paper,the system composition,data preprocessing,field of view matching,and cross-calibration methods are systematically described,and some of the airborne validation results are evaluated and displayed.The results show that the field of view matching error between the POSP and the SIPC is approximately 0.12 POSP pixels.Through polarimetric cross-calibration,the relative radiance deviation of the SIPC compared to the POSP on a uniform land surface is 2.54%,and the degree of polarization deviation is 0.013,validating the effectiveness of dual polarimetric instrument detection data and the feasibility of cross-calibration.These results provide a basis and support for the design of satellite polarimetric cross-fire detection systems,data preprocessing,polarimetric cross-calibration methods,and on-orbit application evaluation.
作者
李朕阳
洪津
赵旭枫
石新宇
刘振海
宋茂新
罗海燕
邹鹏
史书明
雷雪枫
LI Zhenyang;HONG Jin;ZHAO Xufeng;SHI Xinyu;LIU Zhenhai;SONG Maoxin;LUO Haiyan;ZOU Peng;SHI Shuming;LEI Xuefeng(Anhui Institute of Optics and Fine Mechanics,Hefei Institute of Physical Science,Chinese Academy of Sciences,Hefei 230031,Anhui,China;Key Laboratory of Optical Calibration and Characterization,Chinese Academy of Sciences,Hefei 230031,Anhui,China;Shanghai Institute of Satellite Engineering,Shanghai 201109,China)
出处
《上海航天（中英文）》
CSCD
2023年第3期76-83,共8页
Aerospace Shanghai（Chinese&English）
基金
国家自然科学基金(42275144)
王宽诚率先人才计划“卢嘉锡国际合作团队项目”(GJTD-2018-15)。
关键词
高精度偏振扫描仪
同时偏振相机
交叉定标
视场匹配
偏振测量
particulate observing scanning polarimeter(POSP)
simultaneous imaging polarization camera(SIPC)
cross calibration
field of view matching
polarization measurement
