引入热源的主动式比辐射率测试

An Active Emissivity Measurement Method by Adding A Heat Source

考虑到测试目标的反射特性，通过对双向反射率分布函数ＢＲＤＦ的讨论，引入并推导出适用于实际测试的ρ归一化的双向反射率分布函数．比辐射率测试方程包含了目标辐射及反射特性，环境辐射和附加热源的辐射．给出了确定目标反射特性的ρ归一化的双向反射率分布函数的计算公式以及相应的比辐射率测试公式．将具有不同的反射特性的目标样品分类测试，并与双圆筒法测得的结果进行比较分析．

considering the reflectance properties of the target, we add a heat source in the emissivity moneyment system to present an active method for measuring emissivity. The active emissivity measuremeat equation is useful for guiding Practice. From the expedriental results, it is indicated that be method is feasible for practical use.