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一种改进的遥感影像地形校正方法 被引量:4

An Improved Topographic Correction Method of Remote-sensing Images
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摘要 地形校正是遥感影像定量化应用环节之一,以往的地形校正研究多是针对一景影像中很小的局部影像块来进行处理研究的,对整景大场景影像进行地形校正的研究尚不多。基于此,本文利用高分一号的宽视场相机拍摄的16 m分辨率的遥感影像,研究了大场景下地形校正方法,对C校正模型进行了改进,在C校正模型中加入了反射角的影响,并且验证了改进模型的合理性;最后对改进的模型与余弦校正模型、传统的C校正模型的处理结果进行了比较。通过分析,利用改进的模型,影像的标准差普遍变小,影像校正后的阴阳坡亮度值趋于一致的趋势更明显。试验结果表明,对大场景、非星下点成像的遥感影像利用改进模型进行地形校正效果明显增强。
出处 《测绘通报》 CSCD 北大核心 2015年第1期75-80,89,共7页 Bulletin of Surveying and Mapping
基金 国家973计划(2014CB744201) 国家863计划(2011AA120203) 国家自然科学基金(41371430 91438203)
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参考文献7

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