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依据Lambert定律建立了非直视紫外光通信系统单次散射传输模型。模型表明:大气传输中的两次斜向传输引入的大气透射比衰减,大气散射衰减和距离平方反比衰减是导致接收光功率随距离增加迅速衰减的主要因素。为便于实际计算,对建立的散射传输模型做了合理的计算简化,经实验验证简化后的传输模型计算结果与实验结果吻合较好。利用简化后的传输模型可以方便有效地计算出非直视紫外光通信接收机在不同距离下的接收功率和路径传输损耗,进而可以迅速、有效地计算和评估已知参数的非直视紫外光通信系统的极限工作距离。
According to Lambert’s law, a single-scattering model of non-direct-view UV communication system is established. The results show that the atmospheric transmittance attenuation, atmospheric scattering attenuation and inverse square distance attenuation introduced by two oblique transmissions in atmospheric transmission are the main factors that cause the received light power to decay rapidly with the increase of distance. In order to facilitate the practical calculation, the reasonable calculation and simplification of the established scattering transmission model are made. The calculated results of the simplified simplified transmission model are in good agreement with the experimental ones. The simplified transmission model can be used to calculate the received power and path loss of non-look-back UV communication receivers at different distances conveniently and efficiently, so that non-direct-view UV light of known parameters can be calculated and evaluated quickly and effectively Communication system limit working distance.