清除FSO链路上的空气衰减

2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC) Pub Date : 2013-10-28 DOI:10.1109/IMOC.2013.6646590

O. Fiser, V. Brazda

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引用次数: 3

摘要

FSO链路衰减不仅由雾、雨和大气湍流引起，也由水蒸气(晴空衰减)引起。水蒸气的测量也可以是声波温度。这一贡献比较了由相对湿度、温度和气压计算出的声波温度与由声波风速计观测到的声波温度。我们发现用风速计测得的声温可以用计算的声温代替，在实际应用中更为可行。最后介绍了声波衰减系数(SRF)，定义为由声波温度计算的FSO衰减与气象温度估计的衰减之比。它可以用来修正由气象温度而不是声波温度计算的晴空衰减。

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Clear air attenuation on FSO links

The FSO link attenuation can be caused not only by fog, rain and atmospheric turbulences but also by water vapor (clear air attenuation). The measure of water vapor can be also the sonic temperature. This contribution compares computed sonic temperature from relative humidity, temperature and air pressure with sonic temperature observed by sonic anemometer. We found that the sonic temperature (measured by anemometers) can be replaced by computed sonic temperature being more available in practice. Finally we introduced the Sonic Reduction Factor (SRF) defined as ratio of FSO attenuation computed from sonic temperature to attenuation estimated from meteorological temperature. It could be used to correct the clear air attenuation computed from meteorological temperature instead of sonic temperature.

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来源期刊

2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC)

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