The Sealing  cavity Method for Determining Emissivity and Its Deviation Analysis

TANG Xin  zhai; ZHANG Ren  hua; SU Hong  bo; SUN Xiao  min

doi:10.11834/jrs.20000101

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The Sealing cavity Method for Determining Emissivity and Its Deviation Analysis
Issue 1, Pages: 1-7(2000)
Published：2000
DOI： 10.11834/jrs.20000101
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[1]唐新斋,张仁华,苏红波,孙晓敏.比辐射率封闭法测定技术及误差分析[J].遥感学报,2000(01):1-7. DOI： 10.11834/jrs.20000101.

TANG Xin zhai, ZHANG Ren hua, SU Hong bo, et al. The Sealing cavity Method for Determining Emissivity and Its Deviation Analysis[J]. Journal of Remote Sensing, 2000, (1): 1-7. DOI： 10.11834/jrs.20000101.

摘要

黑体筒封闭法测定比辐射率的方法大大简化了比辐射率的测量及计算过程；针对这种方法，分析了目标物体、环境的出射辐照度的波动对比辐射率精确测定的影响，讨论了不同辐射计滤光波段对计算的影响；并根据大量的实验给出冷热环境温差的优化值。最后给出了对比辐射率精确测定具有指导意义的３个结论。

Abstract

The Sealing Cavity method for determining the emissivity of the target object simplified the measuring and computing process. According to above mentioned method

in this paper

the influence on the accurately measuring result of the undulation of target object emittance and environment emittance have been analyzed. Also

we discuss the effect of wavebands between different infrared radiometers. Through lots of experiments

the optimum contrast temperature difference between hot environment and cool environment is given. Finally

three conclusions are drawn to guide the measurement of emissivity.