利用机载POLDER数据反演不同生物群系的LAI和fAPAR

遥感信息 Pub Date : 1997-08-03 DOI:10.1109/IGARSS.1997.615941

P. Bicheron, M. Leroy, O. Hautecoeur

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引用次数: 0

摘要

本文的目的是研究一种基于BRDF模型对即将到来的大视场光学卫星传感器(如POLDER/ADEOS, VGT/SPOT4, MODIS/EOS, MISR/EOS)遥感数据的反演反演LAI和fAPAR参数的方法。使用的模型是Kuusk(1994)的模型。利用BOREAS 94和HAPEX 92期间获得的现场数据和机载POLDER对该方法进行了评估。结果表明，该方法恢复的LAI精度高于半经验关系LAI-植被指数恢复的精度。每日的fAPAR也得到了很好的恢复。从陆地生物圈定量表征的角度来看，利用BRDF模型反演生物物理参数是有前景的。

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Retrieving of LAI and fAPAR with airborne POLDER data over various biomes

The objectives of the paper is to study a method of retrieval of LAI and fAPAR parameters based on the inversion of a BRDF model against remote sensing data from forthcoming wide field of view optical satellite sensors such as POLDER/ADEOS, VGT/SPOT4, MODIS/EOS, MISR/EOS. The model used is that of Kuusk (1994). The evaluation of this approach is made with field data and airborne POLDER acquired during BOREAS 94 and HAPEX 92. The results show that the LAI is restituted with an accuracy higher than that obtained with a semi-empirical relationship LAI-vegetation index. The daily fAPAR is also very well restituted. It is concluded that the retrieval of biophysical parameters from inversion of a BRDF model is promising in the perspective of a quantitative characterization of the terrestrial biosphere.

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来源期刊

遥感信息

自引率

0.00%

发文量

3984

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