紫外光通信的散射信道简化模型

Study of atmospheric scatter short model for UV communication

针对不同的紫外光通信模式,提出了非直视单散射信道模型的简化模型,通过实验验证了简化模型的准确性和高效性;在简化模型的基础上,对各种典型天气条件下,不同通信距离的能量损耗等进行数值仿真和结果分析,为日盲段紫外光散射通信系统的能耗分析提供了理论依据。通过对仿真结果的分析可知,简化模型可在保证仿真精度的前提下,提高仿真速度105倍;通信距离较小时,能见度对能量变化的影响较小;当距离增大后,薄雾天气对能量衰减迅速增加;随着距离的增加,轻霾、晴朗、非常晴朗等天气对能量衰减影响程度的差异也逐渐增加,即能见度越低,能量衰减曲线越陡,反之,曲线越平缓。

According to different UV communication model,a short models for non-line of sight single scattering channel model was presented in this paper,and its accuracy and efficiency were verified by experiment.Base on this model,simulation and analysis of the energy loss with different transmitting distances and weather condition were made,in order to provide a theoretical basis for energy analyzing of UV communication system.The simulation results show that short model can not only achieve accelerated ratio of 105,but also assure the simulation accuracy.The visibility has little effect on the energy change when communication distance is small;and with distance increasing,the energy attenuation increases rapidly especially under misty weather.That is,the lower the visibility is,the steeper the energy attenuation curve becomes,whereas the more gentle curve becomes.