| 烟尘气溶胶对星地量子通信性能的影响 |
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| 作者姓名： | 谈欣 张秀再 许芝也 翟梦思 周丽娟 |
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| 作者单位： | 南京信息工程大学长望学院,江苏 南京 210044;南京信息工程大学电子与信息工程学院,江苏 南京 210044 ；南京信息工程大学江苏省大气环境与装备技术协同创新中心,江苏 南京 210044 |
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| 基金项目： | 江苏省自然科学基金项目(BK20141004)；国家自然科学基金项目(11504176,61601230) |
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| 摘 要： | 根据烟尘气溶胶的尺寸分布参数和消光系数,分析了烟尘气溶胶粒子数浓度与传输距离对链路衰减的影响。结合幅值阻尼信道对信道容量、信道保真度及信道误码率进行数值仿真。仿真结果表明,当传输距离为3 km,烟尘气溶胶粒子数浓度由2.1×106 m-3增加到3.2×106 m-3时,链路衰减由0.30 dB增加到0.46 dB,误码率由0.008 7增加到0.012 2。由此可见,烟尘气溶胶对星地量子通信的各项性能均有影响,且影响程度不一。仿真结果可为烟尘气溶胶影响下的量子信号传输提供参考。
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| 关 键 词： | 量子通信 烟尘气溶胶 链路衰减 信道容量 信道保真度 |
| 收稿时间： | 2022/3/21 0:00:00 |
| 修稿时间： | 2022/9/3 0:00:00 |
Influence of soot aerosol on satellite-ground quantum communication performance |
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| Authors: | TAN Xin ZHANG Xiuzai XU Zhiye ZHAI Mengsi ZHOU Lijuan |
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| Abstract: | According to the size distribution parameter and extinction coefficient of soot aerosol, the influence of the number concentration of soot aerosol particles and transmission distance on the link attenuation is analyzed. Combined with the amplitude damping channel, the channel capacity, channel fidelity, and channel bit error rate are numerically simulated. The simulation results show that the number concentration of soot aerosol particles increases from 2.1×106 m-3 to 3.2×106 m-3, the link attenuation factor increases from 0.30 dB to 0.46 dB, and the bit error rate increases from 0.008 7 to 0.012 2 at a transmission distance of 3 km. It can be seen that the soot aerosol has influence on the performance of satellite-ground quantum communication, and the degree of influence is different. The simulation results can provide reference for quantum signal transmission under the influence of soot aerosol. |
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