When the airborne laser transmitter is located above or in the center of the cloud, the cloud will reduce the laser communication performance. In order to solve this problem, the effects of different types of clouds on laser energy attenuation, signal-to-noise ratio (SNR), maximum symbol transmission rate and bit error rate are simulated and analyzed. It is concluded that the cloud mainly causes laser energy attenuation, which affects maximum transmission rate and bit error rate, but has little effect on SNR. For communication systems with link margin greater than 18.9 dB, 4 km cloud cover is allowed on the link. The effect of cloud on the maximum communication rate and bit error rate is mainly caused by inter-symbol crosstalk caused by time extension. Cirrus has little effect on communication performance, cumulus has a great impact on communication performance, and stratus, stratocumulus, and cumulonimbus have a greater influence on the communication performance, but the differences between the three types of clouds are small and could be not be distinguished. Altostratus cloud and nimbostratus have greatest influence on communication performance, of which nimbostratus has greater influence than altostratus cloud.
Analysis of the effect of cloud thickness on the performance of blue-green laser communication
First published at:Mar 18, 2020
 Bucher E A. Computer simulation of light pulse propagation for communication through thick clouds[J]. Applied Optics, 1973, 12(10): 2391–2400.
 Mooradian G C, Geller M. Temporal and angular spreading of blue-green pulses in clouds[J]. Applied Optics, 1982, 21(9): 1572–1577.
 Di L F, Wang P, Lu Y H, et al. Experiment and calculation of 532nm laser scattering in the near ground atmosphere[J]. Chinese Journal of Quantum Electronics, 2005, 22(6): 960–964.
狄凌峰, 王沛, 鲁拥华, 等. 近地大气532 nm激光散射的实验与计算[J]. 量子电子学报, 2005, 22(6): 960–964.
 Hess M, Koepke P, Schult I. Optical properties of aerosols and clouds: The software package OPAC[J]. Bulletin of the American Meteorological Society, 1998, 79(5): 831–844.
 Hu X H, Zhou T H, Zhu X L, et al. Simulation of downward laser pulse propagation through clouds[J]. Infrared, 2015, 36(2): 8–12.
胡秀寒, 周田华, 朱小磊, 等. 云对激光下行传输影响的仿真研究[J]. 红外, 2015, 36(2): 8–12.
 Arnon S, Sadot D, Kopeika N S. Analysis of optical pulse distortion through clouds for satellite to earth adaptive optical communication[J]. Journal of Modern Optics, 1994, 41(8): 1591–1605.
 Arnon S, Kopeika N S. Adaptive optical transmitter and receiver for space communication through thin clouds[J]. Applied Optics, 1997, 36(9): 1987–1993.
 Liu J B, Li H. Calculation of light scattering on water cloud particles by using Mie's theory[J]. Journal of Guangxi University (Natural Science Edition), 2009, 34(6): 863–867.
刘建斌, 李海. 基于Mie理论的四种典型水云的光散射计算[J]. 广西大学学报(自然科学版), 2009, 34(6): 863–867.
 Chen C Y, Yang H M, Jiang H L, et al. Analysis of bit-error-rate and performance enhancement ways for optical communication link through cloud channel[J]. Journal of System Simulation, 2009, 21(5): 1245–1248.
陈纯毅, 杨华民, 姜会林, 等. 云层信道光通信链路误码率及性能改善途径分析[J]. 系统仿真学报, 2009, 21(5): 1245–1248.
 Ke X Z, Xi X L. Introduction to Wireless Laser Communication[M]. Beijing: Beijing University of Posts and Telecommunications Press, 2004.
柯熙政, 席晓莉. 无线激光通信概论[M]. 北京: 北京邮电大学出版社, 2004.
 Yang H, Yang X L. Monte carlo simulation of light pulse propagation through clouds[J]. Laser Journal, 2008, 29(2): 44–46.
杨虹, 杨小丽. 激光在云层信道中传输的蒙特卡罗模拟[J]. 激光杂志, 2008, 29(2): 44–46.
 Ke S Y. A thesis submitted in fully fulfillment of the requirement for the degree of master of engineering[D]. Wuhan: Huazhong University of Science and Technology, 2007.
柯善勇. 空间激光通信中的信道建模研究[D]. 武汉: 华中科技大学, 2007.
 Winker D M, Poole L R. Monte-Carlo calculations of cloud returns for ground-based and space-based LIDARS[J]. Applied Physics B, 1995, 60(4): 341–344.
 Li J Z. Optical Manual[M]. Xi’an: Shaanxi Science and Technology Press, 1986: 859–862.
李景镇. 光学手册[M]. 西安: 陕西科学技术出版社, 1986: 859–862.
 Liu M, Liu X G, Mou J Y, et al. Analysis of power attenuation model for wireless optical communication[J]. Infrared and Laser Engineering, 2012, 41(8): 2136–2140.
刘敏, 刘锡国, 牟京燕, 等. 无线光通信光功率衰减模型分析[J]. 红外与激光工程, 2012, 41(8): 2136–2140.
 Li Y Q, Zhu Y, Wang J P. Principle and technology of optical communication[M]. Beijing: Science Press, 2006: 321–323.
李玉权, 朱勇, 王江平. 光通信原理与技术[M]. 北京: 科学出版社, 2006: 321–323.
 Stotts L B. Closed form expression for optical pulse broadening in multiple-scattering media[J]. Applied Optics, 1978, 17(4): 504–505.
 Lee S, Hamzeh B, Kavehrad M. Airborne laser communications and performance enhancement by equalization[C]//Lasers & Applications in Science & Engineering. San Jose, California, United States: SPIE, 2006.
National Natural Science Foundation of China (6170012154) and Shandong Province "Taishan Scholars" Construction Project Special Funds (ts20081130)
Get Citation: Li Songlang, Mao Zhongyang, Liu Chuanhui, et al. Analysis of the effect of cloud thickness on the performance of blue-green laser communication[J]. Opto-Electronic Engineering, 2020, 47(3): 190389.
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