superstandard propagation

superstandard propagation

[¦sü·pər′stan·dərd ‚präp·ə′gā·shən]
(electromagnetism)
The propagation of radio waves under conditions of superstandard refraction in the atmosphere, that is, refraction by an atmosphere or section of the atmosphere in which the index of refraction decreases with height at a rate of greater than 12 N units (unit of index of refraction) per 1000 feet (304.8 meters).
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