首页 | 本学科首页   官方微博 | 高级检索  
     

非同温对平面混合像元温度发射率分离的影响分析
引用本文:程洁,杜永明,柳钦火,李小文,肖青,刘强.非同温对平面混合像元温度发射率分离的影响分析[J].大气与环境光学学报,2008,3(1):57-64.
作者姓名:程洁  杜永明  柳钦火  李小文  肖青  刘强
作者单位:1. 中国科学院遥感应用研究所,遥感科学国家重点实验室,北京,100101;中国科学院研究生院,北京,100039
2. 中国科学院遥感应用研究所,遥感科学国家重点实验室,北京,100101;北京师范大学,北京,100875
3. 中国科学院遥感应用研究所,遥感科学国家重点实验室,北京,100101
基金项目:国家自然科学基金 , 中国科学院知识创新工程项目 , 国家重点基础研究发展计划(973计划)
摘    要:在热红外光谱区域,假设非同温平面混合像元的发射率为r-emissivity,那么它的辐射温度是随波长变化的.以典型的由土壤和植被组成的非同温平面混合像元为例,分析了非同温对其辐射温度的影响,并给出体现辐射温度变化的可能的方法.利用模拟的热红外高光谱数据对该方法进行了验证,验证结果表明,该方法能够较好地刻画非同温平面混合像元辐射温度随波长的变化,提高了非同温平面混合像元r-emissivity的反演精度.

关 键 词:非同温混合像元  温度  发射率  热红外  遥感  平面  混合像元  温度变化  发射率  分离  影响分析  Temperature  Effects  Analysis  Pixel  Mixed  Flat  反演精度  结果  验证  光谱数据  模拟  利用  方法  辐射温度
文章编号:1673-6141(2008)01-0057-08
收稿时间:2007-06-18
修稿时间:2007-07-16

Analysis of the Non-isothermal Effects on the Temperature/Emissvity Separation of Flat Mixed Pixel
CHENG Jie,DU Yong-ming,LIU Qin-huo,LI Xiao-wen,XIAO Qing,LIU Qiang.Analysis of the Non-isothermal Effects on the Temperature/Emissvity Separation of Flat Mixed Pixel[J].Journal of Atmospheric and Environmental Optics,2008,3(1):57-64.
Authors:CHENG Jie  DU Yong-ming  LIU Qin-huo  LI Xiao-wen  XIAO Qing  LIU Qiang
Affiliation:CHENG Jie~(1,2) DU Yong-ming~(1,3) LIU Qin-huo~(1,2) LI Xiao-wen~(1,3) XIAO Qing~1 LIU Qiang~1 (1 State Key Laboratory of Remote Sensing Science,Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences , Beijing Normal University,Beijing 100101,China,2 Graduate School of Chinese Academy of Sciences,Beijing 100039,3 Beijing Normal University,Beijing 100875,China)
Abstract:In the thermal infrared spectral region, the radiometric temperature of flat non-isothermal mixed pixel varies with the wavelength if we assumed that its emissivity can be represented by r-emissivity. The typical flat non-isothermal mixed pixel composed of soil and vegetation is taken as an example, analyzing the non-isothermal effects on the radiometric temperature of the pixel, and giving a possible method to present the variation of radiometric temperature change. In order to validate the method, simulated hyper spectral thermal infrared dataset is generated. The validation results show that the method can characterize the change of flat non-isothermal mixed pixel with wavelength well and improve the inversion precision of r-emissivity of flat non-isothermal mixed pixel.
Keywords:non-isothermal mixed pixel  temperature  emissivity  thermal infrared  remote sensing
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号