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Collision frequencies of raindrops

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1 Author(s)
Warner, C. ; Univ. of Virginia, Charlottesville, VA, USA

Using an exponential model spectrum for raindrop sizes, calculations are made of how often raindrops collide with one another. The collision of a large drop with another occurs after an interval of a few seconds. Large drops are likely to be markedly aspherical, and to oscillate, rather than to follow collectively a mean canting angle. Such variabilities should be considered in calculating depolarization and differential attenuation of microwaves in rain.

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Antennas and Propagation, IEEE Transactions on  (Volume:25 ,  Issue: 4 )