Development of a new radiowave propagation in rain measurement equipment
Abstract
The paper presents measurement equipment used to investigate radio-wave attenuation, depolarization, dephasation and diffraction due to rainfall in connection with the application of radio waves above 10 GHz. An antenna system consisting of four 3-m parabolic dishes is used to measure the attenuation, depolarization and angle of arrival of a 12 GHz satellite signal, and the attenuation, depolarization and dephasation are measured on a terrestrial link. A technique to measure the absolute value of dephasation is suggested, which measures and compares signals from two reflectors. Meteorological measuring equipment is also presented, including rain gauges, anemometers, thermometers and hydrometers, and a data acquisition and recording system which ensures continuous data transmission and measurement on floppy disks, is described.
- Publication:
-
Rome International Astronautical Federation Congress
- Pub Date:
- September 1981
- Bibcode:
- 1981rome.iafcT....S
- Keywords:
-
- Atmospheric Attenuation;
- Depolarization;
- Microwave Attenuation;
- Microwave Equipment;
- Rain;
- Spacecraft Communication;
- Wave Diffraction;
- Data Acquisition;
- Measuring Instruments;
- Meteorological Instruments;
- Parabolic Antennas;
- Satellite Television;
- Signal Measurement;
- Communications and Radar