摘要
文章分析了低温点源黑体设备研制中的几项关键技术,包括3种常见发射腔腔形的特点、腔体发射率的计算方法,以及热管、恒温浴和液氮电加热3种恒温方式的原理和技术特性;比较了国内外典型低温黑体设备、产品的性能指标;并简述低温点源黑体设备在红外定标试验中的原理和应用。最后总结出现阶段低温点源黑体的发展水平以及未来的研究重点。
In this paper,some key technologies of point-source black body working at low temperature are analyzed,including the features of three kinds of black body cavities,the emissivity calculation methods,and the principle of maintaining the temperature of the cavity with heat pipe,water or oil bath,or liquid nitrogen and electric heater.The characteristics of the facilities developed in China and other countries are compared,the principle and applications of this kind of black body in the radiometric calibration experimentation are discussed in details.Finally,the development level and future concerns related with this kind of facilities are discussed.
出处
《航天器环境工程》
2011年第2期151-156,共6页
Spacecraft Environment Engineering
基金
中国空间技术研究院自主研发项目"模拟空间环境下红外遥感器辐射定标技术"
关键词
点源黑体
红外辐射定标
发射腔
发射率
温度控制
point-source blackbody
infrared radiometric calibration
emission cavity
emissivity
temperature control
