Radar measurements of site-diversity improvement during precipitation
Abstract
An S-band radar was used to measure the backscatter from precipitation. Digital A-scans were obtained for various azimuth and elevation angles during computer-controlled scans. The mean reflectivity of precipitation was determined as a function of range, and path attenuations at 15.3 GHz were derived. In another experiment, signals at 15.3 GHz from the ATS-5 satellite were received, using a 9.1-m antenna. From the A-scans recorded, the path attenuations were derived and were compared with the values of attenuation measured directly using the satellite. The comparisons allow accurate calibration of the radar in terms of the attenuation at 15.3 GHz. The spatial resolution provided by the radar was then used to determine the size distribution of precipitation cells producing various attenuations.
- Publication:
-
Journal de Recherches Atmospheriques
- Pub Date:
- June 1974
- Bibcode:
- 1974JReAt...8..451S
- Keywords:
-
- Atmospheric Attenuation;
- Backscattering;
- Meteorological Radar;
- Precipitation (Meteorology);
- Radar Measurement;
- Reception Diversity;
- Communication Satellites;
- Computer Techniques;
- Particle Size Distribution;
- Radar Echoes;
- Radar Scanning;
- Radar Scattering;
- Satellite Transmission;
- Superhigh Frequencies