雷暴云对星地量子链路性能的影响及参数仿真

doi:10.11959/j.issn.1000-436x.2017092

Abstract

Abstract:

In order to investigate the effect of thunderstorm cloud on the performance of satellite-to-ground quantum link,according to the extinction cross section and the number concentration distribution function of the charged particle in the thunderstorm cloud,the relationships among the particle concentration,charge density and link attenuation of charged particles in atmosphere were established.The relationship between the atmospheric concentration of charged particles,the charge density on the average channel capacity,channel fidelity,channel survival function and bit error rate of quantum key distribution system were put out.The simulation results show that the thunderstorm cloud has a significant effect on the performance of the satellite-to-ground quantum link.So in order to improve the reliability of satellite-ground quantum communication,the system parameters should be adjusted according to the forecast of the thunderstorm cloud.

Key words: satellite-to-ground quantum link, thunderstorm cloud, charged particles in the atmosphere, charge density, depolarization channel

CLC Number:

P427

Min NIE,Li SHI,Guang YANG,Chang-xing PEI. Influence of thunderstorm cloud on the performance of satellite-to-ground quantum link and parameters simulation[J]. Journal on Communications, 2017, 38(5): 31-38.

Figures/Tables 10

References 21

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参数	取值
θ ₀	90^o
E₀	20 kV·m^?1
m	1.75+0.35i
σ ₂	0.38 μC·m^?1
d	10 km

参数	取值
η	0.65
n_b	10^?3
n_d	10^?6
G_s	0.5
O_r	0.5
μ	1
V	0.5
U_a	1
G_c	1

Influence of thunderstorm cloud on the performance of satellite-to-ground quantum link and parameters simulation

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