Measurement and simulation of the effect of snowfall on free-space optical propagation
Measurement and simulation of the effect of snowfall on free-space optical propagation
复制标题
DOI：
10.1364/ao.47.005736
复制
发表时间：
2008-11-01
期刊：
影响因子：
1.9
通讯作者：
Ito, Shigeo
中科院分区：
文献类型：
--
作者：
Akiba, Makoto;Ogawa, Kayo;Ito, Shigeo
我们测量了72米降雪过程中接收到的激光信号电平的时间变化。当雪花穿过激光光束时，信号电平急剧下降长达10毫秒。假定降雪引起的光是雪花衍射光的线性叠加，计算了降雪引起的变化的概率分布。通过假设合理的雪花大小分布，可以重现测量到的分布。此外，还计算了1公里范围内降雪引起的概率分布，并估计了降雪期间的预期误码和传输波束大小。(C)2008年美国光学学会
We measured the time variation of a received laser signal level during snowfall over a distance of 72 m. The signal level dropped sharply for up to 10 ms when a snowflake crossed the laser beam. The probability distribution of the variation due to snowfall was calculated by assuming it to be the linear superposition of the light diffracted by snowflakes. The measured distributions could be reproduced by assuming reasonable snowflake size distributions. Furthermore, the probability distributions due to snowfall over a 1 km distance were calculated, and the expected bit errors during snowfall and the transmitted beam sizes were evaluated. (C) 2008 Optical Society of America