The time-spatial structure of microwave radio fields on line-of-sight overwater paths
Abstract
The result of experimental and theoretical investigations of the time-spatial field pattern are discussed for radio wave ranges 35.4 and 0.8cm. The measurements carried out on overwater paths 7 and 22 km long were accompanied by monitoring vertical profiles of the refraction index, up to heights about 100m over the sea surface, performed with standard meteorological sensors and a microwave refractometer. The theoretical calculations were carried out in terms of ray optics, for different models of the refractive index profile. The distribution of the effective gradient as obtained from the radio physical experiments during the summer and autumn periods, is close to the normal law, with median value corresponding to the critical refraction.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- 1983
- Bibcode:
- 1983STIN...8426955B
- Keywords:
-
- Geometrical Optics;
- Radio Waves;
- Remote Sensing;
- Space-Time Functions;
- Meteorological Parameters;
- Microwave Scattering;
- Ocean Surface;
- Refractivity;
- Wave Propagation;
- Communications and Radar