Scattering properties of Pruppacher-and-Pitter form raindrops and cross polarization due to rain: Calculations at 11, 13, 19.3, and 34.8 GHz
Abstract
Forward-scattering amplitudes of raindrops are computed at 11, 13, 19.3, and 34.8 GHz for a real raindrop shape given by Pruppacher and Pitter, assuming plane waves at normal incidence to the drop axis. Horizontal and vertical polarizations are considered in the incident field. These forward-scattering amplitudes are then used to estimate cross polarization by rain. Cross-polarization factors are calculated for two kinds of raindrop canting angle distributions: gaussian distributions and a photographically measured distribution. The results show that the scatter of the drop canting angles reduces the cross polarization considerably as compared with that for equioriented raindrops.
- Publication:
-
Radio Science
- Pub Date:
- February 1977
- DOI:
- 10.1029/RS012i001p00041
- Bibcode:
- 1977RaSc...12...41O
- Keywords:
-
- Microwave Scattering;
- Polarization Characteristics;
- Raindrops;
- Drop Size;
- Plane Waves;
- Radii;
- Radio Meteorology;
- Scattering Amplitude