sky wave


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Related to sky wave: ground wave, space wave

sky wave

[′skī ‚wāv]
(electromagnetism)
A radio wave that travels upward into space and may or may not be returned to earth by reflection from the ionosphere. Also known as ionospheric wave.

sky wave

sky wave
A radio wave that propagates by traveling upward into the upper reaches of the atmosphere and is reflected so that it returns to the earth. However, some of the waves may not be returned to the earth.

sky wave

A radio signal transmitted into the sky and reflected back down to earth from the ionosphere.
References in periodicals archive ?
As described earlier, the combination of ground wave and sky wave creates an interference pattern that moves relative to the receiver during a flare.
If the sky wave passes through one layer, it may be reflected from a higher layer.
Each VLF signal represents the sum of a component received directly from the transmitter (the Ground Wave) and one received after refraction by the ionosphere (the Sky Wave).
For the 23rd biannual CSR starting mid-April, commercial outfits Pole Star combined with Sky Wave and, using Inmarsat and Purplefinder technology, they were able to supply accurate position reports on competitors to web-based watchers in both countries every two hours, thus greatly enhancing potential rescue efforts if needed.
The direction of the change in received signal level is determined by the phase relationship between the version of the transmitted signal reflected from the ionosphere (the 'sky wave') and the version of the signal received directly from the transmitter (the 'ground wave').