太阳窗口抑制空间激光通信天线在轨热致温度场扰动研究

发布时间：2018-04-11 05:16

本文选题：GEO + 太阳窗口　；参考：《西北工业大学学报》2017年02期

【摘要】：空间激光通信光学天线对温度场的稳定性和均匀性要求甚高,GEO星载激光通信,受剧烈交变的太阳外热流影响,引起星外光学天线在轨温度场热扰动失稳而缩减光通信时间。为此提出"太阳窗"作为太阳光谱滤光装置屏蔽太阳辐射,结合光学天线系统热设计,基于热仿真分析研究太阳窗抑制光学天线温度场热扰动效能。研究结果表明,基于太阳窗的光学天线系统热控优化设计,抑制光学天线温度场热致扰动效果显著:主镜温度场稳定性提高2.2倍,次镜温度场稳定性提高10.6倍,主镜与次镜温度场均匀性提高约10倍,符合光通信天线温度场稳定性与均匀性指标要求的时长可达24h/d,是不采用太阳窗方案的3倍以上。
[Abstract]:The stability and uniformity of the temperature field in the optical antenna of space laser communication are very high. The thermal disturbance of the temperature field in the orbit of the optical antenna is unstable and the time of optical communication is reduced because of the intense heat flux outside the sun.In this paper, a solar window is proposed as a solar spectral filter to shield solar radiation. Based on the thermal simulation analysis, the effectiveness of the solar window in suppressing the thermal disturbance of the optical antenna temperature field is studied in combination with the thermal design of the optical antenna system.The results show that the thermal control optimization design of the optical antenna system based on the sun window has a remarkable effect on suppressing the thermal disturbance of the optical antenna temperature field: the stability of the primary mirror temperature field is increased by 2.2 times, the secondary mirror temperature field stability is increased by 10.6 times.The homogeneity of temperature field of primary mirror and secondary mirror is increased by about 10 times, and the time of temperature field stability and uniformity of optical communication antenna can reach 24 h / d, which is more than 3 times of that without solar window scheme.
【作者单位】：中国空间技术研究院通信卫星事业部;
【分类号】：TN929.1

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