Abstract: A new method was offered to retrieve component temperature of mixed pixel with multi-angle thermal infrared data based on the law of directionality of thermal radiance of mixed pixel. To take continuous vegetation canopy as an example, the correlation coefficients among multi-angle thermal infrared data are less than their counterpart of multi-channel which mainly depend on the distribution function of leaf angle(LAD), therefore, it is easier to keep accuracy of retrieved component temperature within 1K than its counterpart.

Key words: multi-angle thermal infrared remote sensing, mixed pixel, inversion of component temperature

摘要： 在研究了混合像元热辐射方向性规律的基础上，以连续植被冠层为例，提出了利用热红外多角度遥感数据，直接反演混合像元组分温度的方法。与多通道数据相比，多角度信息间的相关性要低得多，它主要取决于植被冠层的叶倾角分布函数(LAD)。因此更容易达到反演精度小于1K的目的。

关键词: 未热红外多角度遥感, 混合像元, 组分温度反演