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| 基于ETM+的表观荔枝波谱反射率反演研究 | |
| 引用本文： | 方立刚,陈水森,张晓初.基于ETM+的表观荔枝波谱反射率反演研究[J].热带地理,2005,25(4):322-326. |
| 作者姓名： | 方立刚 陈水森 张晓初 |
| 作者单位： | 1. 中国科学院广州地球化学研究所,广州,510640;广州地理研究所,广州,510070 2. 广州地理研究所,广州,510070;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 3. 广州地理研究所,广州,510070 |
| 基金项目： | 广东省科技计划项目（NO.2003B21703,NO.2004B20701002）;国家863计划项目（2002AA130010-2） |
| 摘 要： | 试从现有的大量遥感影像中提取不同环境下地物的反射率,以目前常用的ETM＋影像数据和荔枝波谱数据提取为例,先对影像进行系统校正得到星上反射率,然后采用6S大气校正模型对图像进行订正,反演地物的真实反射率,并采用与野外实测相结合的方法,分析了星上反射率、6S反演的反射率与实测值之间的误差,结果证明6S校正法是一种较高精度的地物波谱反演方法,可以方便、快捷、准确地从现有的大量遥感影像上直接获取荔枝的反射率.为下一步的自动高效从影像反演地物反射率的研究奠定了基础. |
| 关 键 词： | ETM＋影像 大气校正 6S模型 荔枝反射率 反演 |
| 文章编号： | 1001-5221（2005）04-0322-05 |
| 收稿时间： | 2005-04-06 |
| 修稿时间： | 2005-08-08 |
A RESEARCH ON RETRIEVING THE APPARENT REFLECTANCE OF LICHEE SPECTRUM BASED ON ETM+ IMAGE |
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| FANG Li-gang,CHEN Shui-sen,ZHANG Xiao-chu.A RESEARCH ON RETRIEVING THE APPARENT REFLECTANCE OF LICHEE SPECTRUM BASED ON ETM+ IMAGE[J].Tropical Geography,2005,25(4):322-326. | |
| Authors: | FANG Li-gang CHEN Shui-sen ZHANG Xiao-chu |
| Institution: | 1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; 2. Guangzhou Institute of Geography, Guangzhou 510070, China;3. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Application, Chinese Academy of Sciences, Beijing 100101, China |
| Abstract: | Although the development of spectral library is always an important research aspect of remote sensing at home and abroad,nowadays,most object spectrum data still depend on field measurement,which consumes a great lot of manpower and material resources.It is especially important to obtain object reflectance under deferent environment conditions from the present vast remote sensing images.A study is made on lichee reflectance inversion with ETM+ image.First,system emendation is conducted on the image to obtain APR;second,the atmospheric correction of ETM+ image is carried out with 6S model which is an operational method of correcting visible and near-infrared data for atmospheric effects;finally,error analysis is made by comparison between APR,corrected ETM+ image data from 6S model and measured reflectance data of field.It is proved that 6S is a higher precision way to retrieve spectrum of lichee object.The method provides convenience for lichee remote sensing research based on apparent reflectance retrieval from remote sensing images. |
| Keywords: | ETM+ image 6S model Atmospheric correction Lichee Apparent reflectance Inversion |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |