Temperature and surface emissivity are the two factors that determine the IR radiant intensity of an object.

影响目标红外辐射亮度有两个因素：表面温度和发射率。

youdao

Based on the local thermal equilibrium and component effective emissivity concept the radiant model of continuous vegetation has been studied.

论文基于局地热平衡条件和组分有效发射率概念探讨了连续植被的热辐射方向性模型。

youdao

Radiant directionality of mixed pixel is completely decided by the directionality of emissivity in isothermal condition.

在同温条件下，像元热辐射方向性完全由像元比辐射率的方向性决定。

youdao