在中低温条件下环境辐射对光谱发射率测量的影响

Effect on Environment Radiation in Measurements for Spectral Emissivity at Medium and Low Temperatures

讨论了有效光谱发射率和有效亮度温度的概念。介绍了光谱发射率的测量方法及测量装置。在考虑到环境辐射的情况下，给出了光谱发射率的计算方程，指出中低温条件下的光谱发射率测量必须考虑环境辐射的影响，否则会出现较大的误差。

Both effective spectral emissivity and radiance temperature are discussed. The measuring methods and apparatus of spectral emissivity are introduced. The calculation equation for spectral emissivity is given, which has a concern with the environment radiation. It indicates that the effect of environment radiation should be taken into account on the measurements for spectral emissivity at medium and low temperatures, otherwise a significant measuring error will be introduced.