8 March 2018 The effect of temperature distribution on reflectors in satellite optical terminals
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Proceedings Volume 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application; 106975M (2018) https://doi.org/10.1117/12.2309879
Event: Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 2017, Nanjing, China
Abstract
Considering of orbital environments and working mode of the reflectors, thermal model of the 45-degree reflector assembly in satellite optical terminals on orbit is established to obtain temperature distribution of the reflectors(the extreme low temperature is -38.0°C, the extreme high temperature is 32.2°C and the max temperature gradient is 3.3°C), meanwhile, a thermal-optical vacuum experiment based on the analysis results is conducted to check the effect of temperature distribution on reflectors .the results shows: if temperature of the reflector is ≥-10°C, the reflector shape accuracy PV will be better than λ/3, and the RMS will be better than λ/30 (λ=632.8nm), but it becomes worse and is not able to meet application requirement when the temperature decreases continuously(-40°C ~-10°C). So it is necessary to design reasonable active heating loops for reflector assembly to guarantee its performance on orbit.
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Chenjie Wang, Aihong Shangguan, Wenyi Chai, Yongming Hu, Wenquan Tao, "The effect of temperature distribution on reflectors in satellite optical terminals", Proc. SPIE 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 106975M (8 March 2018); doi: 10.1117/12.2309879; https://doi.org/10.1117/12.2309879
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