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Measurements of copolar attenuation through the bright band at 4 and 7 GHz

Mesures de l’affaiblissement copolaire dans une couche isothermique 0°C a 4 et 7 GHz

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Abstract

This paper presents some initial results from an experiment designed to measure microwave propagation through the bright band at 4 and 7 GHz. Preliminary measurements taken at 7 GHz indicate bright band attenuation to be many times (in dB per kilometer) greater than attenuation due to equivalent amounts of rain. These measurements also suggest that refractive multipath might occur during bright-band propagation conditions. An experimental design based on remote telemetry is described to improve resolution in future measurements and to help model bright-band propagation phenomenon.

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Cet article présente quelques résultats préliminaires d’une expérience destinée à mesurer la propagation des hyperfréquences à travers une couche isothermique 0°C à 4 et 7 GHz. Une série de premières mesures effectuées à 7 GHz indiquent que l’affaiblissement dans la couche isothermique 0°C est de plusieurs fois supérieur (en dB par km) à l’affaiblissement dû à une quantité équivalente de pluie. Ces mesures font également apparaître que des trajets multiples par réfraction peuvent survenir en propagation à travers une couche isothermique 0°C. On décrit un système expérimental basé sur la télémesure destiné à améliorer la résolution des mesures ultérieures et la modélisation du phénomène de propagation dans une couche isothermique 0°C.

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Authors and Affiliations

  1. Department of Electrical Engineering, University of British Columbia, V6T 1W5, Vancouver, B.C., Canada

    J. A. Vander Star & M. M. Kharadly

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  1. J. A. Vander Star
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  2. M. M. Kharadly
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Vander Star, J.A., Kharadly, M.M. Measurements of copolar attenuation through the bright band at 4 and 7 GHz. Ann. Télécommun. 36, 48–53 (1981). https://doi.org/10.1007/BF02997003

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  • DOI: https://doi.org/10.1007/BF02997003

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