摘要
中巴资源卫星的CCD数据作为我国自主卫星数据源,在遥感应用方面发挥着重要作用。但由于CCD数据所获取的可见光-近红外波段信息易受大气因素干扰,因此寻求一种适合于中巴资源卫星CCD数据快速、有效的大气校正方法,以提高影像的利用率。介绍FLAASH大气校正的主要算法原理,并利用其进行CBERS-02B星CCD影像的大气纠正试验。通过分析校正前后的影像目视效果、典型地物光谱特征和NDVI值,表明FLAASH方法能够快速、有效地纠正大气因素对CBERS-02B星CCD影像的影响,对于植被覆盖地区纠正效果尤为明显。因此,FLAASH大气校正方法能够为大数据量的CBERS系列卫星CCD数据的大气校正提供了快速、可行及有效的方法。
As an independent satellite data source of China,CBERS-02B CCD data play an important role in remote sensing application.However,CCD data obtained by visible-near infrared band is easily interfered by atmosphere,thus it is necessary to find a suitable and effective way to correct the atmospheric interference.In this paper,FLAASH algorithms and principles is described at first and then it is used for CDD data atmospheric correction study of CBERS-02B star.The visual effect,typical objects spectral and NDVI were compared between original image and correction image.The result showed that the FLAASH can correct the atmospheric in CCD image effectively,especially in vegetation district.It proved that FLAASH can provide a fast feasible and effective way for atmospheric correction with large amounts of CCD data of CBERS serial satellites.
出处
《安徽农业科学》
CAS
北大核心
2011年第4期2051-2053,2071,共4页
Journal of Anhui Agricultural Sciences
基金
国家自然基金(70873117)
