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遥感技术与应用  2011, Vol. 26 Issue (6): 775-781    DOI: 10.11873/j.issn.1004-0323.2011.6.775
光学遥感     
基于高程分层方法的HJ-1B CCD2影像大气校正
石锋,沙晋明,张友水,刘霞
(福建师范大学地理科学学院,福建 福州 350007)
Atmospheric Correction for Environment Satellite CCD2 Data based on Stratified Elevation
Shi Feng,Sha Jinming,Zhang Youshui,Liu Xia
(College of Geography,Fujian Normal University,Fuzhou 350007,China)
 全文: PDF(2085 KB)  
摘要:

大气校正是从环境一号B星(HJ\|1B)CCD2多光谱卫星数据中精确提取地面定量信息的关键一步。采用一种基于高程分层和改进的浓密植被算法,即将整个研究区按照高程间隔0.1 km划分为17个子区域,在不同高程带内利用红波段与短波红外波段(1.6 μm)的线性关系估计出红波段的反射率,然后利用估计的红波段反射率与其表观反射率差值的均值,结合6S辐射传输模型模拟计算得到0.55 μm处的气溶胶光学厚度,从而实现各个波段大气校正。比较分析校正前后成熟林地、水体和裸土的光谱反射率和标准反射率,结果表明:该方法对HJ-1B CCD2数据大气校正可取得较好的效果。

关键词: 大气校正气溶胶光学厚度6S模型HJ-1B    
Abstract:

To extract quantitative information from HJ-1B imagery data accurately,atmospheric correction is a necessary step.We present a new algorithm that based on stratified elevation and using the spectral correlation between red and 1.6 μm channel to drive atmospheric properties and execute atmospheric correction process for HJ-1B Data.Since our study area in mountainous region,we separate the whole area into 17 different elevation zones by step of 0.1 km and simulating aerosol optical depth in 0.55 μm within each elevation zone using radiative transfer model,then the atmospheric correction procedure in different elevation zone of each visible,infrared and short wave infrared spectral channel is performed.Through the comparative analysis of spectral curve of dense mature forest,bare soil and water contained sediment before and after atmospheric correction at different sites,the result indicating this approach is promising in atmospheric correction for HJ\|1B imagery data.

Key words: Atmospheric correction    Aerosol optical depth    6S model    HJ-1B
收稿日期: 2010-12-12 出版日期: 2012-01-10
:  TP 75  
基金资助:

福建省重点项目“海峡西岸经济区生态文明理论与技术支撑体系研究”(1240102),欧盟第七框架Seventh Framework Programme:Integrated Geo-spatial Information Technology and Its Application to Resource and Environmental Management towards the GEOSS(247608)资助。

通讯作者: 沙晋明(1964-),男,广东梅州人,博士、教授,主要从事生态遥感与地学建模方面的研究。     E-mail: jmsha@fjnu.edu.cn
作者简介: 石锋(1983-),男,安徽阜阳人,硕士研究生,主要从事遥感与地理信息建模研究。Email:shifeng3098@126.com。
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引用本文:

石锋,沙晋明,张友水,刘霞. 基于高程分层方法的HJ-1B CCD2影像大气校正[J]. 遥感技术与应用, 2011, 26(6): 775-781.

Shi Feng,Sha Jinming,Zhang Youshui,Liu Xia. Atmospheric Correction for Environment Satellite CCD2 Data based on Stratified Elevation. Remote Sensing Technology and Application, 2011, 26(6): 775-781.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2011.6.775        http://www.rsta.ac.cn/CN/Y2011/V26/I6/775

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