Experimental assessment of the accuracy of predicting attenuation-function moduli in the LF and MF ranges
Abstract
The present study examines the feasibility and accuracy of predicting attenuation-function moduli in the LF and MF ranges of the radio spectrum for the example of a portion of the European region of the USSR which is flat but complex in the geoelectric respect and heavily populated. The proposed method for calculating the wave-propagation parameters and for compiling maps of geoelectric sections of the underlying surface has been verified experimentally, and prediction accuracies of 1-1.5 dB and 1.5-4 dB were achieved in the LF and MF ranges, respectively.
- Publication:
-
VLF Propagation in the Earth-Ionosphere Waveguide Channel
- Pub Date:
- 1983
- Bibcode:
- 1983vpei.book..239P
- Keywords:
-
- Attenuation Coefficients;
- Ionospheric Propagation;
- Low Frequencies;
- Radio Attenuation;
- Annual Variations;
- Electrical Impedance;
- Error Analysis;
- Forests;
- Geoelectricity;
- Ground Effect (Communications);
- Intermediate Frequencies;
- U.S.S.R.;
- Communications and Radar