地球静止轨道空间星载激光通信光学天线热控技术

发布时间：2018-06-18 15:28

  本文选题：光通信 + 地球静止轨道　； 参考：《中国激光》2017年03期

【摘要】：光学天线作为空间激光通信系统中的核心组件,应具有较好的温度场稳定性和均匀性。较大的天线口径和地球静止轨道空间外热流的复杂聚变,增大了天线温度场热控技术的难度。根据光学天线的构型特点和外热流的变化规律,基于光机热一体化协同设计,将空间高效热防护技术与光学镜面辅助热控技术相结合,实现了对大口径光通信天线温度场的稳定性与均匀性的长期精稳控制,并通过热实验进行验证。实验结果表明,强日照期对天线采取避光策略时,满足光通信天线温度场指标要求的时长大于14.3h/d,温度稳定控制在21.4~26.2℃范围内,主镜自身热差不大于1.3℃,主镜与次镜之间的热差不大于3.8℃,这些结果均高于稳定性与均匀性的指标要求。
[Abstract]:As the core component of space laser communication system, optical antenna should have good stability and uniformity of temperature field. The large aperture of antenna and the complex fusion of outer heat flux in geostationary orbit make it more difficult to control the temperature field of antenna. According to the configuration characteristics of the optical antenna and the variation law of the external heat flux, based on the optical mechanical and thermal integration design, the space high efficiency thermal protection technology and the optical mirror auxiliary thermal control technology are combined. The stability and uniformity of the temperature field of the large aperture optical communication antenna are controlled for a long time, and the results are verified by thermal experiments. The experimental results show that the time to meet the requirements of optical communication antenna temperature field is longer than 14.3 h / d, the temperature stability is controlled in the range of 21.4 鈩，

本文编号：2035961