| Revealing of major factors in the directional thermal radiation of ground objects——A new way for improving the precision of directional radiant temperature measuring and data analysis |
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| 引用本文： | 张仁华
,孙晓敏
,李召良
,苏红波
,唐新斋
,M.P.Stoll.Revealing of major factors in the directional thermal radiation of ground objects——A new way for improving the precision of directional radiant temperature measuring and data analysis[J].中国科学E辑(英文版),2000,43(Z1). |
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| 作者姓名： | 张仁华 孙晓敏 李召良 苏红波 唐新斋 M.P.Stoll |
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| 作者单位： | ZHANG Renhua,SUN Xiaomin,SU Hongbo,TANG Xinzhai(Institute of Geography,Chinese Academy of Sciences,Beijing 100101,China);LI Zhaoliang,M.P.Stoll(Laboratoire des Sciences de l'Image,de l'Informatique et de la Teledetection,67400 Illkirch,France)
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| 基金项目： | the Chinese Key-Important Basic Research Plan,国家重点基础研究发展计划(973计划),中国科学院资助项目 |
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| 摘 要： | This paper is devoted to eliminating the noise from the measuring of directional thermal radiation for ground objects. Specifically, we think that the noise is mainly due to the variance of components in the field of view of the sensor with the view angle changing and to the heat balance change on the ground during the period of measurement. The authors present two new observation methods named as "constant area method by thermal camera" and "concurrent method by dual sensors" respectively. The experiments show that the data obtained by these methods abide by some regularly directional distribution, which is totally different from the data from the former methods. The analysis of the major factors in the directionality of thermal radiation is also made in the paper.
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Revealing of major factors in the directional thermal radiation of ground objects--A new way for improving the precision of directional radiant temperature measuring and data analysis |
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| ZHANG Renhua,SUN Xiaomin,LI Zhaoliang,M.P.Stoll,SU Hongbo,TANG Xinzhai.Revealing of major factors in the directional thermal radiation of ground objects--A new way for improving the precision of directional radiant temperature measuring and data analysis[J].Science in China(Technological Sciences),2000,43(Z1). |
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| Authors: | ZHANG Renhua SUN Xiaomin LI Zhaoliang MPStoll SU Hongbo TANG Xinzhai |
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| Abstract: | This paper is devoted to eliminating the noise from the measuring of directional thermal radiation for ground objects. Specifically, we think that the noise is mainly due to the variance of components in the field of view of the sensor with the view angle changing and to the heat balance change on the ground during the period of measurement. The authors present two new observation methods named as "constant area method by thermal camera" and "concurrent method by dual sensors" respectively. The experiments show that the data obtained by these methods abide by some regularly directional distribution, which is totally different from the data from the former methods. The analysis of the major factors in the directionality of thermal radiation is also made in the paper. |
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| Keywords: | radiant temperature directionality constant area method by thermal camera concurrent method by dual sensors |
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