本文選題：光通信 + 地球靜止軌道��； 參考：《中國激光》2017年03期

【摘要】：光學(xué)天線作為空間激光通信系統(tǒng)中的核心組件,應(yīng)具有較好的溫度場穩(wěn)定性和均勻性。較大的天線口徑和地球靜止軌道空間外熱流的復(fù)雜聚變,增大了天線溫度場熱控技術(shù)的難度。根據(jù)光學(xué)天線的構(gòu)型特點和外熱流的變化規(guī)律,基于光機熱一體化協(xié)同設(shè)計,將空間高效熱防護技術(shù)與光學(xué)鏡面輔助熱控技術(shù)相結(jié)合,實現(xiàn)了對大口徑光通信天線溫度場的穩(wěn)定性與均勻性的長期精穩(wěn)控制,并通過熱實驗進行驗證。實驗結(jié)果表明,強日照期對天線采取避光策略時,滿足光通信天線溫度場指標要求的時長大于14.3h/d,溫度穩(wěn)定控制在21.4~26.2℃范圍內(nèi),主鏡自身熱差不大于1.3℃,主鏡與次鏡之間的熱差不大于3.8℃,這些結(jié)果均高于穩(wěn)定性與均勻性的指標要求。
[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，

本文編號：2035961