Effect of Oblate Raindrops on Attenuation at 30.9 GHz
Article first published online: 7 DEC 2012
Copyright 1970 by the American Geophysical Union.
Volume 5, Issue 3, pages 559–564, March 1970
How to Cite
1970), Effect of Oblate Raindrops on Attenuation at 30.9 GHz, Radio Sci., 5(3), 559–564, doi:10.1029/RS005i003p00559.(
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Received: 15 SEP 1969
An experiment that measures the difference in attenuation of horizontally and vertically polarized fields propagating along a 1.89-km path at 30.9 GHz is discussed. For a rain-induced fade of 18.5 db/km, differences between attenuations in horizontal and vertical polarizations as large as 3 db/km have been observed. There is good agreement when these microwave measurements are compared with calculations based on raindrop shapes that were measured visually by an independent investigator. From the data, we conclude that there are significant differences between attenuations in these polarizations for rain-induced fades and that we should think in terms of an effective rain rate for vertical polarization that is less than that measured by rain gages.