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应用科学学报 ›› 2010, Vol. 28 ›› Issue (4): 337-341.doi: 10.3969/j.issn.0255-8297.2010.04.002

• 通信工程 • 上一篇    下一篇

非对称回复反射自由空间光通信链路性能

丁德强1;2， 柯熙政1   

  1. 1. 西安理工大学自动化与信息工程学院，西安710048
    2. 西安通信学院军事电子信息工程系，西安710106
  • 收稿日期:2009-12-25 修回日期:2010-05-25 出版日期:2010-07-23 发布日期:2010-07-23
  • 作者简介:丁德强，博士生，研究方向：光无线通信，E-mail:dingdeqiang@126.com；柯熙政，教授，博导，研究方向：无线激光通信、信号处理及导航，E-mail: xzke@xaut.edu.cn
  • 基金资助:

    国家自然科学基金(No.60977054)；陕西省自然科学基金(No.2007F12)；西安理工大学优秀博士论文基金(No.2007YB005)资助

Performance of Asymmetrical Retro-reflected Free Space Optical Link

DING De-qiang1;2, KE Xi-zheng1   

  1. 1. The faculty of Automation and Information Engineering, Xi’an University of Technology,Xi’an 710048, China;
    2. The department of Military Electronic and Information Engineering, Xi’an Communication College,Xi’an 710106, China  
  • Received:2009-12-25 Revised:2010-05-25 Online:2010-07-23 Published:2010-07-23

PDF

1791

被引次数

4

摘要：

 调制回复反射器(modulating retro-reflector, MRR)制约非对称自由空间光通信系统的性能. 本文建立高斯光束经角偶棱镜(corner cube retro-reflector, CCR)的MRR反射后出射光束的数学模型，分析大气湍流对调制回复反射器光链路的影响，研究CCR多光束反射特性对大气湍流信道的补偿作用. 仿真结果表明，在传输距离、光功率、反射面积一定的条件下，波长、入射角及CCR折射率都是影响链路性能的关键因素，CCR反射后的多光束效果也可有效降低接收信噪比的起伏.

关键词: 自由空间光通信；调制回复反射器；角偶棱镜

Abstract:

Performance of asymmetrical free space optics (FSO) depends on retro-reflector. In this paper,a mathematic model of laser beam reflected by corner cube retro-reflector (CCR) is set up and applied to analyze the effect of atmosphere turbulence on the modulating retro-reflector(MRR) link. Further, channel compensation of CCR reflection characteristics for the received power fluctuation induced by atmospheric turbulence is discussed. Simulation results show that wavelength, angle of incidence, and refractive index of CCR are the key factors influencing performances of the asymmetrical link, and SNR fluctuation is decreased by reflection of CCR.

Key words: free space optics, modulating retro reflector, corner cube retro-reflector

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