The Influence of Polarization State of Partially Coherent Beam on Coherent Detection Sensitivity in Non-Kolmogorov Atmospheric Turbulence

WU Jia-li; HUI Yu-ze; DING De-qiang; KE Xi-zheng

doi:10.12263/DZXB.20221286

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The Influence of Polarization State of Partially Coherent Beam on Coherent Detection Sensitivity in Non-Kolmogorov Atmospheric Turbulence

PAPERS | 更新时间：2025-12-08

- The Influence of Polarization State of Partially Coherent Beam on Coherent Detection Sensitivity in Non-Kolmogorov Atmospheric Turbulence
- ACTA ELECTRONICA SINICA Vol. 51, Issue 5, Pages: 1370-1380(2023)
- 作者机构：
  
  1.西安理工大学自动化与信息工程学院，陕西西安 710048
  2.中国人民解放军国防科技大学信息通信学院，湖北武汉 430019
- 作者简介：
- 基金信息：
  
  Foundation Item(s):　Scientific Research Program of Shaanxi Province(18JK0341);Key Industry Innovation Project of Shaanxi Province(2017ZDCXL-GY-06-01);Xi'an Science and Technology Plan Project(2020KJRC0083);Independent Innovation Science Fund Project of National University of Defense Technology(22-ZZCX-051)
- DOI：10.12263/DZXB.20221286
  CLC： TN919.21
- Received：09 November 2022，
  
  Revised：2023-01-09，
  
  Published：25 May 2023
- 稿件说明：
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吴加丽,惠玉泽,丁德强等.非Kolmogorov大气湍流下部分相干光偏振状态对相干探测灵敏度的影响研究[J].电子学报,2023,51(05):1370-1380.

WU Jia-li,HUI Yu-ze,DING De-qiang,et al.The Influence of Polarization State of Partially Coherent Beam on Coherent Detection Sensitivity in Non-Kolmogorov Atmospheric Turbulence[J].ACTA ELECTRONICA SINICA,2023,51(05):1370-1380.
吴加丽,惠玉泽,丁德强等.非Kolmogorov大气湍流下部分相干光偏振状态对相干探测灵敏度的影响研究[J].电子学报,2023,51(05):1370-1380. DOI： 10.12263/DZXB.20221286.

WU Jia-li,HUI Yu-ze,DING De-qiang,et al.The Influence of Polarization State of Partially Coherent Beam on Coherent Detection Sensitivity in Non-Kolmogorov Atmospheric Turbulence[J].ACTA ELECTRONICA SINICA,2023,51(05):1370-1380. DOI： 10.12263/DZXB.20221286.

摘要

本文讨论了在非Kolmogorov湍流下部分相干电磁高斯-谢尔模型（Electromagnetic Gaussian-Schell Model，EGSM）光束用于相干探测时系统的性能.基于相干探测理论推导了EGSM光束在非Kolmogorov湍流下斜程传输时系统灵敏度的表达式.研究了在误码率为

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下上行和下行传输时光束在不同偏振状态、功率谱幂律、湍流尺度、传输距离、天顶角、探测器参数、接收端高度或光源高度对相干探测系统灵敏度的影响.结果表明：在非Kolmogorov湍流谱下，系统灵敏度会随着功率谱幂律的增大而增大；在相同条件下，上行传输时的系统探测灵敏度大于下行传输；在链路条件相同的情况下，完全偏振的EGSM光束用于相干探测时的灵敏度均比非偏振光束的灵敏度大3 dBm.最后，建立了EGSM光束相干探测系统，通过实验验证了部分偏振EGSM光束用于相干探测的系统灵敏度介于完全偏振和非偏振之间.

Abstract

This paper mainly discusses the performance of partially coherent electromagnetic Gaussian-Schell model(EGSM) beam for coherent detection under non-Kolmogorov turbulence. Based on the coherent detection theory

the expression of the sensitivity of the EGSM beam is derived when it propagates in the slant path under non-Kolmogorov turbulence. Under the condition of bit error rate of

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the effects of coherent beam in different polarization states

power spectrum power law

turbulence scale

propagation distance

zenith angle

detector parameters

receiver height and beam source height on the sensitivity of the coherent detection system are studied in the uplink and downlink atmospheric turbulence. The results show that

under the non-Kolmogorov turbulence spectrum

the system sensitivity increases with the rise of power spectrum power law. Under the same conditions

the detection sensitivity of uplink propagation is greater than that of downlink propagation. Under the same link conditions

the sensitivity of completely polarized EGSM beam for coherent detection is 3 dBm greater than that of the unpolarized beam. The EGSM beam coherent detection system is established

and the experiments verify that the sensitivity of partially polarized EGSM beams is between that of completely polarized and unpolarized ones.

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references

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