大气对激光通信影响及抑制技术研究

发布时间：2018-06-09 17:53

本文选题：大气激光通信 + 多口径发射　；参考：《长春理工大学》2014年硕士论文

【摘要】：在现代激光通信传输中,大气对光传输过程中的衰减和起伏影响,已严重影响了激光通信的发展。为提高通信距离、速率和通信质量,抑制大气对激光通信的不利影响是十分重要的。本文对激光在大气中的传输模型进行了阐述和分析,重点探讨了光强起伏对激光通信系统性能的影响,在此基础上,建立了基于激光通信系统参数的多口径发射和大口径接收大气传输信道模型。对不同发射孔径数目和不同接收口径大小对接收光强和闪烁方差的影响进行了仿真分析。根据仿真分析结果,构建了多口径发射和大口径接收实验装置,通过实验分别验证了多口径发射与大口径接收对大气湍流的抑制效果,结果表明实验结果与仿真分析基本一致,为多口径发射和大口径接收在大气激光通信中应用提供理论和实验依据。结合理论建模仿真与实验结果,对一种激光通信用光端机的部分参数进行了优化。
[Abstract]:In modern laser communication, the atmospheric attenuation and fluctuation in the process of optical transmission has seriously affected the development of laser communication. In order to improve the communication distance, speed and communication quality, it is very important to suppress the adverse effects of atmosphere on laser communication. In this paper, the transmission model of laser in atmosphere is described and analyzed, and the influence of intensity fluctuation on the performance of laser communication system is discussed. Based on the parameters of laser communication system, the transmission channel model of multi-aperture transmitting and large-aperture receiving atmosphere is established. The effects of different number of emission aperture and different receiving aperture on the received light intensity and scintillation variance are simulated and analyzed. According to the results of simulation analysis, the experimental device of multi-aperture emission and large-aperture receiving is constructed. The experimental results show that the suppression effect of multi-aperture emission and large-aperture receiver on atmospheric turbulence is basically consistent with the simulation analysis. It provides theoretical and experimental basis for the application of multi-aperture emission and large-aperture receiver in atmospheric laser communication. Based on the theoretical modeling, simulation and experimental results, some parameters of a laser communication optical terminal are optimized.
【学位授予单位】：长春理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.1

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