本文選題：大氣激光通信 + 多口徑發(fā)射　； 參考：《長(zhǎng)春理工大學(xué)》2014年碩士論文

【摘要】：在現(xiàn)代激光通信傳輸中,大氣對(duì)光傳輸過(guò)程中的衰減和起伏影響,已嚴(yán)重影響了激光通信的發(fā)展。為提高通信距離、速率和通信質(zhì)量,抑制大氣對(duì)激光通信的不利影響是十分重要的。本文對(duì)激光在大氣中的傳輸模型進(jìn)行了闡述和分析,重點(diǎn)探討了光強(qiáng)起伏對(duì)激光通信系統(tǒng)性能的影響,在此基礎(chǔ)上,建立了基于激光通信系統(tǒng)參數(shù)的多口徑發(fā)射和大口徑接收大氣傳輸信道模型。對(duì)不同發(fā)射孔徑數(shù)目和不同接收口徑大小對(duì)接收光強(qiáng)和閃爍方差的影響進(jìn)行了仿真分析。根據(jù)仿真分析結(jié)果,構(gòu)建了多口徑發(fā)射和大口徑接收實(shí)驗(yàn)裝置,通過(guò)實(shí)驗(yàn)分別驗(yàn)證了多口徑發(fā)射與大口徑接收對(duì)大氣湍流的抑制效果,結(jié)果表明實(shí)驗(yàn)結(jié)果與仿真分析基本一致,為多口徑發(fā)射和大口徑接收在大氣激光通信中應(yīng)用提供理論和實(shí)驗(yàn)依據(jù)。結(jié)合理論建模仿真與實(shí)驗(yàn)結(jié)果,對(duì)一種激光通信用光端機(jī)的部分參數(shù)進(jìn)行了優(yōu)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.
【學(xué)位授予單位】：長(zhǎng)春理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TN929.1

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本文編號(hào)：2000602