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Influence of rain gauge integration time on the rain rate statistics used in microwave communications

L’influence du temps d’intégration du pluviomètre sur la distribution statistique de la pluie appliquée aux liaisons hertziennes

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Abstract

An investigation into the effect of the integration time T on the rain rate distribution P(R) is presented using a rainfall rate data bank of 49 years recorded at Barcelona (CCIR - Zone L), using a rapid response Jardi rain rate gauge. T extends from 1 to 60 min and P(R) extends to less than 10-3 %. The relation between the various T-distributions P(RT) is presented as well as the values of RT and R1 which give the same probability. The ratio RT/R1 and the potential expression R1 = aRb T are studied. Comparison with recent results from Canada confirms both the numerical value presented and the climatic dependence of the equi-probable ratio RT/R1.

Résumé

On présente une étude de l’effet du temps d’intégration T sur la distribution statistique P(R) de l’intensité de précipitation utilisant des données obtenues pendant 49 ans à Barcelone (zone CCIR-L), à l’aide d’un pluviomètre d’intensité Jardí. T s’étend entre 1 et 60 min, et P(R) va jusqu’à moins de 10-3 %. On présente la relation entre les différentes distributions obtenues lorsque T varie, P(RT), ainsi que les valeurs de RT et R1 qui conduisent à la même probabilité. On étudie le rapport RT/R1 et l’expression potentielle R1 = aRb T. On compare les résultats pour RT/R1 avec ceux obtenus récemment pour le Canada, ce qui confirme les valeurs numériques du rapport RT/R1 aussi bien que sa dépendance climatologique.

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Correspondence to Augusto Burgueño or Manuel Puigcerver or Enric Vilar.

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Burgueño, A., Puigcerver, M. & Vilar, E. Influence of rain gauge integration time on the rain rate statistics used in microwave communications. Ann. Télécommun. 43, 522–527 (1988). https://doi.org/10.1007/BF03011107

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Key words

  • Precipitation gauge
  • Rainfall rate
  • Statistical distribution
  • Electromagnetic wave propagation

Mots clés

  • Pluviomètre
  • Intensité précipitation
  • Distribution statistique
  • Propagation onde électromagnétique