| 星载SAR地形辐射校正模型及其效果评价 |
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| 引用本文： | 陈尔学,李增元,田昕,凌飞龙.星载SAR地形辐射校正模型及其效果评价[J].武汉大学学报(信息科学版),2010(3). |
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| 作者姓名： | 陈尔学 李增元 田昕 凌飞龙 |
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| 作者单位： | 中国林业科学研究院资源信息研究所;国家林业局林业遥感与信息技术重点开放性实验室; |
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| 基金项目： | 中国林业科学研究院资源信息研究所基本科研业务费资助项目; 国家973计划资助项目(2007CB714404) |
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| 摘 要： | 根据合成孔径雷达(SAR)严格成像几何模型和辐射定标公式建立了地形辐射校正(TRC)模型。通过实验,从定性和定量两个方面评价了TRC模型的有效性。比较了基于投影角和基于当地入射角两种计算有效散射单元面积的方法,对根据初始定位模型计算有效散射单元面积的合理性进行了分析。
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| 关 键 词： | 合成孔径雷达 地形辐射校正 地理编码 正射校正 |
Terrain Radiometric Correction Model and Its Validation for Space-Borne SAR Data |
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| CHEN Erxue, LI Zengyuan, TIAN Xin, LING Feilong.Terrain Radiometric Correction Model and Its Validation for Space-Borne SAR Data[J].Geomatics and Information Science of Wuhan University,2010(3). |
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| Authors: | CHEN Erxue LI Zengyuan TIAN Xin LING Feilong |
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| Institution: | CHEN Erxue1,2 LI Zengyuan1,2 TIAN Xin1,2 LING Feilong1,2(1 Institute of Forest Resources Information Technique,Chinese Academy of Forestry,1 Dongxiaofu,Beijing 100091,China)(2 Key Laboratory for Forest Remote Sensing , Information Techniques of State Forestry Administration,China) |
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| Abstract: | Topography has significant influence on the geometric and radiometric properties of synthetic aperture radar(SAR)images.The terrain radiometric correction(TRC)of SAR images is one critical pre-processing step for quantitatively extracting bio-and geophysical parameters from SAR data.A TRC model and its implementation flow for space-borne imaging SAR data were introduced.The correctness and effectiveness of the model and its flow were qualitatively and quantitatively evaluated through several experimentation... |
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| Keywords: | SAR terrain radiometric correction geocoding ortho-rectification |
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