Device and method for identifying and quantifying hydrometeors by Doppler effect
The field of the invention is that of identification and quantification of hydrometeors, that is to say recognition of the various types as well as measuring the volume of meteorological precipitation such as rain, snow, hail, fog, etc., at a given place and during a certain period of time. Accordin...
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Main Authors | , , |
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Format | Patent |
Language | English French |
Published |
23.08.1991
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Subjects | |
Online Access | Get full text |
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Summary: | The field of the invention is that of identification and quantification of hydrometeors, that is to say recognition of the various types as well as measuring the volume of meteorological precipitation such as rain, snow, hail, fog, etc., at a given place and during a certain period of time. According to the invention, the device has the function of identifying and measuring by scattering and by Doppler effect the quantity of hydrometeors passing through a measurement volume (V), scattering a microwave, coming from a transmission module, to a reception module, the said scattering volume (V) being constructed by the intersection of the main radiation lobe (41) of the said electromagnetic wave transmitted by the said transmission module with the main radiation lobe (42) of the said reception module, characterised in that the said transmission and reception modules are separate and in that their respective directions of orientation (XIl, XIr) form a non-zero angle between them.
Le domaine de l'invention est celui de l'identification et de la quantification des hydrométéores, c'est à dire la reconnaissance des différents types ainsi que la mesure du volume de précipitations météorologiques telles que pluie, neige, grêle, brouillard, etc... en un lieu donné et pendant une certaine période de temps. frelon l'invention, le dispositif a pour fonction d'identifier et de mesurer par diffusion et par effet Doppler la quantité d'hydrométéores traversant un volume (V) de mesure diffusant une onde électromagnétique hyperfréquence, provenant d'un module d'émission, vers un module de réception, ledit volume (V) diffusant étant constitué par l'intersection du lobe principal (41) de rayonnement de ladite onde électromagnétique émise par ledit module d'émission avec le lobe principal (42) de rayonnement dudit module de réception, caractérisé en ce que lesdits modules d'émission et de réception sont distincts et en ce que leurs directions d'orientation (XIl , XIr ) respectives forment un angle non nul entre elles. |
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Bibliography: | Application Number: FR19900002471 |