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Qu'est-ce (qui) est ground wave - définition
ground wave
¦ noun a radio wave which reaches a receiver from a transmitter directly, without reflection from the ionosphere.
Ground wave
Ground waves are radio waves propagating parallel to and adjacent to the surface of the Earth, following the curvature of the Earth. This radiation is known as Norton surface wave, or more properly Norton ground wave, because ground waves in radio propagation are not confined to the surface.
AN/URC-117 Ground Wave Emergency Network
U.S. GOVERNMENT COMMAND AND CONTROL COMMUNICATIONS SYSTEM
Ground wave emergency network; GWEN; Ground Wave Emergency Network; GWEN towers
The Ground Wave Emergency Network (GWEN) was a command and control communications system intended for use by the United States government to facilitate military communications before, during and after a nuclear war. Specifically, the GWEN network was intended to survive the effects of an electromagnetic pulse from a high-altitude nuclear explosion and ensure that the United States President or their survivors could issue a launch order to Strategic Air Command bombers by radio.
Wikipédia
Ground wave
Ground waves are radio waves propagating parallel to and adjacent to the surface of the Earth, following the curvature of the Earth. This radiation is known as Norton surface wave, or more properly Norton ground wave, because ground waves in radio propagation are not confined to the surface.
