顾及BRDF和大气影响的摆扫式航空高光谱边缘辐射畸变校正
投稿时间:2015-11-29  修订日期:2016-01-07  点此下载全文
引用本文:田玉刚,吴蔚,杨贵.顾及BRDF和大气影响的摆扫式航空高光谱边缘辐射畸变校正[J].红外与毫米波学报,2016,35(6):701~707].TIAN Yu-Gang,WU Wei,YANG Gui.Edge radiation distortion correction of whiskbroom airborne hyperspectral image by considering BRDF effect and atmospheric attenuation[J].J.Infrared Millim.Waves,2016,35(6):701~707.]
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作者单位E-mail
田玉刚 中国地质大学(武汉)信息工程学院 ygangtian@cug.edu.cn 
吴蔚 中国地质大学(武汉)信息工程学院  
杨贵 中国科学院上海技术物理研究所  
中文摘要:讨论了顾及传输路径差异和方向性反射差异的边缘辐射校正方法, 并根据POS数据改正了由于姿态变化引起的边缘畸变.以实用型模块化成像光谱仪(Operational Modular Imaging Spectrometer, OMIS-Ⅲ)影像为例, 采用上述方法进行边缘校正, 最后采用近似同一扫描行上的同类地物光谱进行对比, 得出校正后的光谱吻合度比校正前更高.
中文关键词:推扫式成像光谱仪  边缘辐射畸变  大气衰减  方向性反射  
 
Edge radiation distortion correction of whiskbroom airborne hyperspectral image by considering BRDF effect and atmospheric attenuation
Abstract:A correction method in consideration both of the radiometric transfer path and BRDF effects was presented. It uses POS data to correct the change of radiation distortion caused by flight attitude. Taking the OMIS-Ⅲ data for example, results show that the spectra of the same object in the middle and edge of corrected images can match better than uncorrected ones after using the correction methods proposed above.
keywords:whiskbroom hyperspectral imager, edge radiation distortion, atmospheric attenuation, bidirectional reflectance distribution function(BRDF)
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