Abstract

We measured the time variation of a received laser signal level during snowfall over a distance of 72m. The signal level dropped sharply for up to 10ms 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 1km distance were calculated, and the expected bit errors during snowfall and the transmitted beam sizes were evaluated.

© 2008 Optical Society of America

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