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引用本文:金鑫,李云梅,王桥,王彦飞,尹斌,张红,吴传庆.基于太湖气溶胶类型分区的环境一号卫星CCD大气校正.湖泊科学,2010,22(4):504-512. DOI:10.18307/2010.0405
JIN Xin,LI Yunmei,WANG Qiao,WANG Yanfei,YIN Bin,ZHANG Hong,WU Chuanqing.Atmospheric correction of satelite HJ-1 CCD image based on aerosol distribution in Lake Taihu. J. Lake Sci.2010,22(4):504-512. DOI:10.18307/2010.0405
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基于太湖气溶胶类型分区的环境一号卫星CCD大气校正
金鑫1, 李云梅1, 王桥2, 王彦飞1, 尹斌1, 张红1, 吴传庆2
1.南京师范大学虚拟地理环境教育部重点实验室 南京 210046;2.环境保护部卫星环境应用中心 北京 100029
摘要:
由两颗卫星组成的环境卫星星座系统所提供的CCD数据具有较高的时间分辨率,使其在内陆湖泊水环境遥感监测中具有较大的应用潜力,对其有效的大气校正方法的研究则是其定量化参数反演的前提.基于准同步的MODIS数据辅助,根据气溶胶的差异性,将太湖划分为北部湖区、其他湖区两块区域,利用辐射传输模型,研究太湖环境一号CCD数据大气校正的方法,并对2009年4月17、21、25日数据进行大气校正.研究结果表明,该大气校正方法直接使用较为成熟的MODIS各类产品,克服了传统大气校正中依赖于现场同步测量大气参数的缺陷,能够快速、有效地完成环境一号CCD数据的大气校正.基于气溶胶类型对太湖进行分区后,所求算的遥感反射率精度高于6S模型和暗像元等大气校正方法得到的结果.
关键词:  环境一号卫星CCD  大气校正  MODIS  气溶胶类型分区  太湖
DOI:10.18307/2010.0405
分类号:
基金项目:国家科技支撑计划“十一五”项目“基于环境一号等国产卫星的大型水体环境遥感监测应用技术与软件研发”(2008BAC34B05);国家自然科学基金项目“面向湖泊水色遥感的多源数据融合与生成研究”(40971215)资助
Atmospheric correction of satelite HJ-1 CCD image based on aerosol distribution in Lake Taihu
JIN Xin1, LI Yunmei1, WANG Qiao2, WANG Yanfei1, YIN Bin1, ZHANG Hong1, WU Chuanqing2
1.Key Laboratory of Virtual Geographic Environment of Education Ministry, Nanjing Normal University, Nanjing 210046, P. R. China;2.Satellite Environment Application Center, Ministry of Environmental Protection, Beijing 100029, P. R. China
Abstract:
HJ-1 satellite system has two optical CCD sensors, which can support real-time data for environment monitoring because of its high temporal resolution, so that there is great potential in investigating inland lake water quality parameters by this system. To effectively monitoring water quality by CCD images, corresponding methods on atmospheric correction should be developed. Using quasi-synchronous MODIS images as an ancillary datum, Lake Taihu was divided into two parts, that is, northern part and the oth-er part. Then, radiactive transfer model was used to develop the atmospheric correction method for satellite FJ-1 CCD images. The satellite HJ-1 CCD images on April 17th, 21st, and 25th of 2009 were processed through this atmospheric correction method. Re-salt shows that this method that is no longer depending on simultaneous measurement of atmospheric parameters, has overcome the defects of traditional atmosphere corrections by directly using MODIS products. Satellite FJ-I CCD image data can be processed more quickly and efficiently this method. Devised by aerosol types, the corrected remote sensing reflectance is more accurate than that by using other methods such as 6S model and dark-object method.
Key words:  Satellite HJ-1 CCD  atmospheric correction  MODIS  aerosol distribution  Lake Taihu
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