Preliminary results of linear/circular depolarisation on a 18km, 11.6 GHz radio link

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Preliminary results of linear/circular depolarisation on a 18km, 11.6 GHz radio link

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© The Institution of Electrical Engineers
Published

An experiment to compare linear and circular depolarisation simultaneously on an 11.6 GHz, 18 km radio link is described. Preliminary results of both rainfall and multipath depolarisation are presented. It is concluded that, in rainfall events, circular depolarisation is worse than linear, although this is not true in all cases of multipath. Experimental results are compared with a new stochastic canting-angle model, and good agreement is obtained, especially for circular polarisation, for which the new model yields a substantial improvement.

Inspec keywords: rain; fading; radiowave propagation; polarisation; microwave links

Other keywords: fading; multipath depolarisation; linear depolarisation; stochastic counting angle model; 11.6 GHz radio link; polarisation; crosspolarisation; rainfall depolarisation; microwave links; circular depolarisation; experimental results; 18 km radio link

Subjects: Satellite communication systems; Radiowave propagation; Point-to-point radio systems

References

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      • T. Oguchi , Y. Hosoya . Differential attenuation and differential phase shift or radio wave due to rain: calculations at microwave and millimetre wave regions. Journal de Recherches Atmospheriques , 121 - 128
    2. 2)
      • M.J. Saunders . Cross-polarisation at 18 and 30 GHz due to rain. IEEE. Trans. , 273 - 277
    3. 3)
      • N.K. Uzunuglu , B.G. Evans , A.R. Holt . , Scattering of electromagnetic radiation by precipitation particles. Pt. II propagation characteristics of terrestrial and space Communication systems.
    4. 4)
      • P.A. Watson , M. Arbabi . Semiempirical law relating cross-polarisation discrimination to fade depth for rainfall. Electron. Lett. , 42 - 45
    5. 5)
      • R.A. Semplak . Simultaneous measurements of depolarisation by rain using linear and circular polarisation at 18 GHz. Bell Syst. Tech. J. , 400 - 404
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