tropospheric scatter/troposcatter
- tropospheric scatter/troposcatter
The propagation of electromagnetic waves by scattering as a result of irregularities or discontinuities in the physical properties of the troposphere. At the frequencies above 150 MHz, the atmosphere has a scattering effect on electromagnetic fields. The scattering allows over-the-horizon communications at very high, ultrahigh, and microwave frequencies. This mode of communication is called tropospheric scatter, or troposcatter. Scattering can take place at low altitudes, but mostly it is at about 10 miles. To realize communication via troposcatter, overlong distances, high-gain antennae, high-power transmitters, and sensitive receivers are a must as path loss is high.
Aviation dictionary.
2014.
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Tropospheric scatter — (or troposcatter) is the scattering of distant TV and FM radio stations by the troposphere so that they travel farther than the line of sight. This effect sometimes allows reception of stations up to a hundred miles away.The phenomenon has been… … Wikipedia
troposcatter — ☆ troposcatter [trō′pə skat΄ər, träp′əskat΄ər ] n. TROPOSPHERIC SCATTER * * * … Universalium
troposcatter — ☆ troposcatter [trō′pə skat΄ər, träp′əskat΄ər ] n. TROPOSPHERIC SCATTER … English World dictionary
North Atlantic Radio System — The North Atlantic Radio System (NARS) was a chain of five tropospheric scatter communication sites that stretched from Iceland to RAF Fylingdales, forming an extension of the Distant Early Warning Line (DEW Line). Contents 1 Development 2 NARS… … Wikipedia
White Alice Communications System — The White Alice Communications System (WACS) was a United States Air Force telecommunication link system constructed in Alaska, during the cold war. It featured tropospheric scatter links and line of sight microwave radio links. It was… … Wikipedia
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ACE High — was a NATO communications system which dates back to 1956. The system was decommissioned in the late 1980s, and its frequencies reallocated for commercial radiotelephone service. The system was designed to be an L band troposcatter radio system,… … Wikipedia
Distant Early Warning Line — DEW redirects here. For energy emitting weapons, see Directed Energy Weapons. USAF Distant Early Warning Line and Distant Early Warning System Office Emblem … Wikipedia
Cold Bay Air Force Station — Cold Bay Long Range Radar Site … Wikipedia
