电子学报 ›› 2021, Vol. 49 ›› Issue (10): 1893-1899.DOI: 10.12263/DZXB.20210285

所属专题: 无线光通信及其组网技术

• 无线光通信及其组网技术 • 上一篇    下一篇

指向误差下高斯光束几何衰减模型分析

刘锡国1,2, 刘敏2, 毛忠阳1,2, 徐建武1,2, 胡昊2   

  1. 1.海军航空大学航空通信教研室,山东 烟台 264001
    2.信号与信息系统山东省重点实验室,山东 烟台 264001
  • 收稿日期:2021-03-01 修回日期:2021-08-12 出版日期:2021-10-25 发布日期:2021-10-25
  • 作者简介:刘锡国 男,1981年生,山东烟台人,博士,海军航空大学副教授.主要研究方向为无线光通信、航空无线电通信. E-mail:lxg1023@163.com
    刘 敏(通信作者) 女,1983年生,山西阳泉人,博士,海军航空大学副教授、硕士生导师.主要研究方向为无线光通信、航空反潜信号处理. E-mail:liumin05@163.com
    毛忠阳 男,1979年生,河南原阳人,博士,海军航空大学教授、博士生导师.主要研究方向为抗干扰通信技术、无线光通信、智能组网. E-mail:freedom_mzy@163.com
    徐建武 男,1982年生,湖南益阳人,博士,海军航空大学讲师.主要研究方向为无线光通信、编码调制技术. E-mail:xjw1225@yeah.net
    胡 昊 男,1978年生,江西高安人,博士研究生,海军航空大学副教授.主要研究方向为无线光通信技术、现代电子技术. E-mail:daqi_hh@163.com
  • 基金资助:
    山东省“泰山学者”建设工程专项经费资助项目;信号与信息系统山东省重点实验室经费资助项目

Analysis of Geometric Attenuation Model of Gaussian Beam under Pointing Error

Xi-guo LIU1,2, Min LIU2, Zhong-yang MAO1,2, Jian-wu XU1,2, Hao HU2   

  1. 1.Aviation Communication Teaching and Research Section,Naval Aeronautic University,Yantai,Shandong 264001,China
    2.State Key Laboratory of Signal and Information Processing of Shandong Province,Yantai,Shandong 264001,China
  • Received:2021-03-01 Revised:2021-08-12 Online:2021-10-25 Published:2021-10-25

摘要:

无线光通信系统中的指向误差对光功率的几何衰减产生影响,导致系统接收光功率的下降,影响系统性能.为了精确分析指向误差对无线光通信系统性能的影响,本文基于高斯光束光强分布推导了圆形孔径下无线光通信系统接收光功率几何衰减模型的精确解析解,仿真了不同参数条件下指向误差对系统几何衰减的影响,验证了解析解的准确性,并与现有模型进行了比较分析.结果表明,采用现有近似模型计算几何衰减存在的误差不能忽略,因此在圆形孔径下进行模型推导更符合实际情况.在无线光通信点对点通信及组网通信时,采用本文所得的指向误差下的高斯光束几何衰减解析模型更为精确.

关键词: 无线光通信, 高斯光束, 指向误差, 几何衰减

Abstract:

Pointing error in wireless optical communication system has an impact on the geometric attenuation of the received optical power, resulting in a decrease in the received optical power of the system and affecting the performance of the system. In order to accurately analyze the effect of pointing error on the performance of wireless optical communication system, based on the intensity distribution of Gaussian beam, the accurate analytical solution of the geometric attenuation model of received optical power in wireless optical communication system with circular aperture is derived. The influence of pointing error on the geometric attenuation of the system under different parameters is simulated, and the accuracy of the analytical solution is verified and compared with the existing model. The results show that there are errors in using the existing approximate model to calculate the geometric attenuation, and the existing errors cannot be ignored, therefore the model derivation under the circular aperture is more in line with the actual situation. In the point-to-point communication and networking communication of wireless optical communication, it is more accurate to use the Gaussian beam geometric attenuation analytical model under pointing error.

Key words: wireless optical communication, Gaussian beam, pointing error, geometric attenuation

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