Evaluation of the diffusion component around 7 GHz for a maritime radio relay link
Abstract
The effect of tropospheric scattering and sea reflection on wave propagation at 7 GHz in point to point communication radio relay link were studied using mathematical models to determine diffusion cross reactions and power spectra. For the tropospheric scattering two models were used; the first makes use of the existence of vortices even outside the propagation axis, the second uses the refractive index variation along the electromagnetic ray. The rms of the phase, the phase spectrum, the received signal amplitude, and receiving angle were determined. For the sea water diffusion the model considers a main wave with small superposed perturbations. The scattering cross sections were determined together with the power spectrum evidencing the perturbation influence, maximum frequency dependence, and spectrum broadening due to geometric dimensions of the supporting sea wave.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- August 1974
- Bibcode:
- 1974STIN...7531306B
- Keywords:
-
- Point To Point Communication;
- Sea Water;
- Superhigh Frequencies;
- Tropospheric Scattering;
- Wave Reflection;
- Autocorrelation;
- Dynamic Models;
- Probability Distribution Functions;
- Scattering Cross Sections;
- Spectrum Analysis;
- Communications and Radar