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REFLEXION TROPOSPHERIQUE [2 records]
Record 1 - internal organization data 2003-02-26
Record 1, English
Record 1, Subject field(s)
- Telecommunications Transmission
- Radio Interference
Record 1, Main entry term, English
- tropospheric fading
1, record 1, English, tropospheric%20fading
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
Tropospheric Fading. Tropospheric turbulence and small changes in the weather are responsible for most fading at VHF and higher. Local weather conditions, such as precipitation, warm air rising over cities and the effects of lakes and rivers, can all contribute to tropospheric instabilities that affect radio propagation. 2, record 1, English, - tropospheric%20fading
Record number: 1, Textual support number: 2 CONT
Performance impairments occur on C- and Ku band satellite communications links because of severe tropospheric fading effects when the elevation angle of the ground station is very low. 3, record 1, English, - tropospheric%20fading
Record 1, French
Record 1, Domaine(s)
- Transmission (Télécommunications)
- Perturbations radio
Record 1, Main entry term, French
- évanouissement troposphérique
1, record 1, French, %C3%A9vanouissement%20troposph%C3%A9rique
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Calcul adéquat des phénomènes entourant les ondes planes :réflexion, diffraction, réfraction, dispersion et évanouissement troposphérique. 2, record 1, French, - %C3%A9vanouissement%20troposph%C3%A9rique
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1993-05-10
Record 2, English
Record 2, Subject field(s)
- Radar, Radio Guidance and Goniometry
- Air Defence
Record 2, Main entry term, English
- over-the-horizon backscatter radar
1, record 2, English, over%2Dthe%2Dhorizon%20backscatter%20radar
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
A radar technique or system used to detect targets beyond the radio horizon. 3, record 2, English, - over%2Dthe%2Dhorizon%20backscatter%20radar
Record 2, French
Record 2, Domaine(s)
- Radar, radioguidage et radiogoniométrie
- Défense aérienne
Record 2, Main entry term, French
- radar transhorizon à réflexion troposphérique
1, record 2, French, radar%20transhorizon%20%C3%A0%20r%C3%A9flexion%20troposph%C3%A9rique
correct, see observation, masculine noun
Record 2, Abbreviations, French
- OTH-B 2, record 2, French, OTH%2DB
masculine noun
Record 2, Synonyms, French
- radar à rediffusion transhorizon 3, record 2, French, radar%20%C3%A0%20rediffusion%20transhorizon
proposal, masculine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
La réflexion des ondes à haute fréquence par l’ionosphère est utilisée dans les radars transhorizon, qui visent à détecter les avions ou les missiles intercontinentaux à des distances de plusieurs centaines à plusieurs milliers de kilomètres. 4, record 2, French, - radar%20transhorizon%20%C3%A0%20r%C3%A9flexion%20troposph%C3%A9rique
Record number: 2, Textual support number: 1 OBS
radar transhorizon à réflexion troposphérique : terme utilisé dans la version française du Mémoire d’entente sur la modernisation du Système de défense aérienne de l'Amérique du Nord. Évidemment ce terme ne tient pas compte des systèmes qui utilisent la réfraction ionosphérique. 3, record 2, French, - radar%20transhorizon%20%C3%A0%20r%C3%A9flexion%20troposph%C3%A9rique
Record 2, Spanish
Record 2, Textual support, Spanish
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