Analysis of Geometric Attenuation Model of Gaussian Beam under Pointing Error

LIU Xi-guo; LIU Min; MAO Zhong-yang; XU Jian-wu; HU Hao

doi:10.12263/DZXB.20210285

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Analysis of Geometric Attenuation Model of Gaussian Beam under Pointing Error

OPTICAL WIRELESS COMMUNICATION AND NETWORKING TECHNOLOGY | 更新时间：2025-12-08

- Analysis of Geometric Attenuation Model of Gaussian Beam under Pointing Error
- ACTA ELECTRONICA SINICA Vol. 49, Issue 10, Pages: 1893-1899(2021)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.12263/DZXB.20210285
  CLC： TN912.12;O436.2
- Received：01 March 2021，
  
  Revised：2021-08-12，
  
  Published：25 October 2021
- 稿件说明：
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刘锡国,刘敏,毛忠阳等.指向误差下高斯光束几何衰减模型分析[J].电子学报,2021,49(10):1893-1899.

LIU Xi-guo,LIU Min,MAO Zhong-yang,et al.Analysis of Geometric Attenuation Model of Gaussian Beam under Pointing Error[J].ACTA ELECTRONICA SINICA,2021,49(10):1893-1899.
刘锡国,刘敏,毛忠阳等.指向误差下高斯光束几何衰减模型分析[J].电子学报,2021,49(10):1893-1899. DOI： 10.12263/DZXB.20210285.

LIU Xi-guo,LIU Min,MAO Zhong-yang,et al.Analysis of Geometric Attenuation Model of Gaussian Beam under Pointing Error[J].ACTA ELECTRONICA SINICA,2021,49(10):1893-1899. DOI： 10.12263/DZXB.20210285.

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.

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.

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