BOS辐射计传热系统的热特性分析  

Thermal characteristics analysis of heat transfer system of BOS radiometer

作　　者：唐潇 朱平 夏云芝 朱晨露 TANG Xiao;ZHU Ping;XIA Yunzhi;ZHU Chenlu(School of Mechanical Engineering,University of South China,Hengyang 421001,Hunan China;Royal Observatory of Belgium,B1180 Bruxelles,Belgium;School of Cyber Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Hubei Chutian Expressway Digital Technology Co.Ltd.,Wuhan 430073,China)

机构地区：[1]南华大学机械工程学院,湖南衡阳421001 [2]比利时皇家天文台,比利时布鲁塞尔B1180 [3]华中科技大学网络空间安全学院,湖北武汉430074 [4]湖北楚天高速数字科技有限公司,湖北武汉430073

出　　处：《华中科技大学学报（自然科学版）》2023年第10期121-125,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(41904163,41974207);湖南省自然科学基金资助项目(2020JJ5483);湖南省教育厅优秀青年项目(21B0428);国家留学基金委公派留学项目(201908430058)。

摘　　要：为了提高空间太阳总辐射测量的测量精度,对比利时皇家天文台研制的辐射震荡传感器(BOS辐射计)的传热系统进行了详细的分析和建模.设计一种适用于BOS辐射计的新型半球形腔体,运用有限元方法对其与已有的其他腔体类型进行比较.结果表明:新型半球形腔可以获得高吸收率、高精度的BOS辐射测量;特别是在低温环境下(20 K),该半球形腔体具有更好的温度稳定性和抗干扰性.此外,研究了接收腔厚度和不同接收腔材料对BOS辐射计时间常数和温度响应的影响,结果表明:在考虑了在轨测量采样率及机械加工工艺后,铝制的壁厚为0.05 mm的接收腔更符合在轨辐射测量的要求.To upgrade the technology lever of the total solar irradiance(TSI)measurement from space,detailed analysis and modeling of the bolometric oscillation sensor's(BOS)heat transfer system developed by Royal Observatory of Belgium was performed.A new hemispherical shape cavity for BOS was proposed,and finite element method was used to compare its characteristics with other existed cavity types.Results show that this new shape cavity can obtain high absorptivity and achieve high accuracy measurements in BOS.Especially,when the ambient temperature is maintains at a low value,such as 20 K,this hemispherical shape cavity has a good performance on temperature stability and anti-interference ability.The effects of receiving cavity thickness and different receiving cavity materials on the time constant and temperature response of BOS radiometer were also studied.Results show that by considering the sampling rate of in-orbit measurement and machining technology,the receiving cavity of aluminum wall thickness of 0.05 mm is more suitable for in-orbit radiation measurement.

关 键 词：太阳辐照度测量 相对辐射计 日地关系 气象卫星 遥感探测 

分 类 号：P422.1[天文地球—大气科学及气象学]