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简要地介绍了国内外在黑体辐射源建立与评价上的发展现状 :多种黑体辐射源 ;多种空腔有效发射率计算方法和模型。通过积分法推导出温度均匀空腔有效发射率计算公式 ,进一步推导的近似计算公式可以作为对黑体空腔有效发射率估算的依据
This paper briefly introduces the development of blackbody radiation source both at home and abroad: a variety of blackbody radiation sources; a variety of cavity effective emissivity calculation methods and models. Through the integral method, the formula for calculating the effective emissivity of a cavity with uniform temperature is deduced. The approximate calculation formula can be further deduced to estimate the effective emissivity of the blackbody cavity