| 基于新型机载多角度传感器AMTIS的LAI反演 |
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| 引用本文： | 周宇宇,唐世浩,朱启疆,阎广建.基于新型机载多角度传感器AMTIS的LAI反演[J].国土资源遥感,2003,14(4):9-12,21. |
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| 作者姓名： | 周宇宇 唐世浩 朱启疆 阎广建 |
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| 作者单位： | 北京师范大学资源与环境科学系遥感与GIS研究中心,北京,100875 |
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| 基金项目： | 国家重点基础研究发展规划973项目(2000077906)，加拿大援助CIDA项目。 |
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| 摘 要： | 以实地测量数据为先验知识,利用AMTIS数据对顺义地区的一块小麦地进行了叶面积指数(LAI)反演实验研究,并用实地LAI数据进行了验证。通过利用实测数据作为模型参数,以及对干湿土壤分类和匹配表的调整,使反演结果和反演速度得到了提高。
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| 关 键 词： | 叶面积指数(LAI) 多角度 辐射传输 |
| 文章编号： | 1001-070X(2003)04-0009-04 |
| 收稿时间： | 2003-03-10 |
| 修稿时间： | 2003-06-30 |
LAI RETRIEVAL BASED ON THE NEW AIRBORNE MULTI-ANGLE SENSOR AMTIS |
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| Institution: | Research center for remote sensing and GIS, Beijing Normal University, Beijing 100875, China |
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| Abstract: | Leaf area index (LAI) is an important biophysical parameter, and remote sensing provides the probability for the LAIretrieval. LAIinversion based on the model is the main orientation of the LAIretrieval, and the multi-angle data are important parameters in the model-based inversion. The new airborne multi-angle sensor AMTIScan obtain the simultaneous multi-angle and high-resolution data. Using the AMTISdata based on the three-dimensional radiative transfer model, an inversion experiment on a wheat field in Shunyi was carried out on the basis of the AMTISmulti-angle data and the prior information. And the result was verified with the measured LAIdata. The inversion precision and rate were improved by adjusting the soil classification and the matching table. The main errors in the process of inversion are also analyzed in this paper. |
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| Keywords: | Leaf area index(LAI) Multi-angle Radiation transfer |
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