Melting layer attenuation at 28.6 GHz from simultaneous comstar beacon and polarisation diversity radar data

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Melting layer attenuation at 28.6 GHz from simultaneous comstar beacon and polarisation diversity radar data

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© The Institution of Electrical Engineers
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Attenuation data at 28.6 GHz obtained from measurements of the Comstar beacon show that, for moderate rain, slant path attenuation may significantly exceed that calculated from simultaneous radar reflectivity measurements. Polarisation diversity radar data were used for positive identification of the rain and the melting layer, and for estimating the rain attenuation along the path. These results indicate that the melting layer attenuation is significant.

Inspec keywords: microwave measurement; tropospheric electromagnetic wave propagation; radiowave propagation; radar measurement; rain; snow

Other keywords: polarisation diversity radar data; slant path attenuation; radar reflectivity measurements; 28.6 GHz; melting layer attenuation; Comstar beacon; SHF; GHz 0028.6; rain; microwave measurement

Subjects: Radar theory; Radiowave propagation; Microwave measurement techniques; Water in the atmosphere (humidity, clouds, evaporation, precipitation)

References

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      • Hendry, A., Antar, Y.M.M., Schlesak, J.J., Olsen, R.L.: `Melting layer attenuation at 28.56 GHz from simultaneous Comstar beacon and 16.5 GHz polarization diversity radar observations', To be presented at IEE second international conference on antennas and propagation, 13–16 April 1981, York, England.
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      • Goldhirst, J.: `Estimation of slant path rain attenuation using radar—a comparative analysis of radar derived and beacon measured fades over a multi-season period', URSI Commission F Open Symposium on ‘effects of the lower atmosphere on radio propagation at frequencies above 1 GHz’, 1980, Lennoxville, , p. 4.6.1–4.6.6.
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      • Y.M.M. Antar , A. Hendry , J.J. Schlesak , R.L. Olsen , R.C. Bérubé . Ice-crystal depolarisation measurements at 28.6 GHz with simultaneous 16.5 GHz polarisation diversity radar observations. Electron. Lett. , 808 - 809
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