15 November 2017 Reflector control technology in space laser communication
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Proceedings Volume 10605, LIDAR Imaging Detection and Target Recognition 2017; 106050Z (2017) https://doi.org/10.1117/12.2286414
Event: LIDAR Imaging Detection and Target Recognition 2017, 2017, Changchun, China
Abstract
The optical frequencies band is used as information carrier to realize laser communication between two low-orbit micro-satellites in space which equipped with inter-satellite laser communication terminals, optical switches, space routers and other payload. The laser communication terminal adopts a two-dimensional turntable with a single mirror structure. In this paper, the perturbation model of satellite platform is established in this paper. The relationship between the coupling and coordinate transformation of satellite disturbance is analyzed and the laser pointing vector is deduced. Using the tracking differentiator to speed up the circular grating angle information constitute speed loop feedback, which avoids the problem of error amplification caused by the high frequency of the conventional difference algorithm. Finally, the suppression ability of the satellite platform disturbance and the tracking accuracy of the tracking system are simulated and analyzed. The results show that the tracking accuracy of the whole system is 10μrad in the case of satellite vibration, which provides the basis for the optimization of the performance of the space-borne laser communication control system.
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Meilin Xie, Meilin Xie, Caiwen Ma, Caiwen Ma, Cheng Yao, Cheng Yao, Wei Huang, Wei Huang, Xuezheng Lian, Xuezheng Lian, Xubin Feng, Xubin Feng, Feng Jing, Feng Jing, } "Reflector control technology in space laser communication", Proc. SPIE 10605, LIDAR Imaging Detection and Target Recognition 2017, 106050Z (15 November 2017); doi: 10.1117/12.2286414; https://doi.org/10.1117/12.2286414
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