| AIRS资料反演大气温度廓线的通道选择研究 |
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| 引用本文： | 张水平.AIRS资料反演大气温度廓线的通道选择研究[J].气象科学,2009,29(4):475-481. |
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| 作者姓名： | 张水平 |
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| 作者单位： | 南京师范大学,虚拟地理环境教育部重点实验室,南京,210046;解放军理工大学,气象学院,南京,211101 |
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| 摘 要： | 通过引入信息容量的概念,给出了一种对高光谱大气探测资料所包含各种大气参数有效信息进行描述的方法;然后以信息容量为指标,设计了利用"逐次吸收法"进行通道选择的计算方案;最后针对利用大气红外探测器(AIRS Atmospheric Infrared Sounder)探测资料反演大气温度廓线进行了通道选择试验.从将本文试验选择结果与NASA(National Aeronautics and Space Administration) DAAC(Distributed Active Archive Center)进行AIRS产品反演时所使用通道进行比较的结果表明,利用信息容量为指标,并按照"逐次吸收法"进行通道选择是可行的.
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| 关 键 词： | 高光谱大气探测资料 通道选择 信息容量 逐次吸收法 |
| 收稿时间： | 2008/11/3 0:00:00 |
Hyperspectral atmospheric sounding information channel selection study |
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| Zhang Shuiping.Hyperspectral atmospheric sounding information channel selection study[J].Scientia Meteorologica Sinica,2009,29(4):475-481. |
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| Authors: | Zhang Shuiping |
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| Institution: | 1 Key Laboratory of Virtual Geographic Environment;MOE;Nanjing Normal University;Nanjing 210046;China;2 Institute of Meteorology;PLA University of Science and Technology;Nanjing 211101;China |
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| Abstract: | By introducing the concept of information content,an approach of describing the effective information of different atmospheric parameters contained in atmospheric sounding data of high spectral resolution is given in the paper firstly.And then a "successive absorption" method for channel selection which uses the information content as the optimal index is designed.At last,a channel selection experiment for the retrieval of temperature is carried out.Compared with the channels used in the retrieving of AIRS ... |
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| Keywords: | High spectral resolution atmospheric sounding data Channel selection Information content Successive absorption method |
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