The radiowave propagation environment - Science and technology objectives for the 80's
Abstract
The ionosphere has a strong influence on the personality of radiowaves which propagate beneath, within, or through it; and this influence derives from the spatial and temporal nonuniformity in the refractivity of the magneto-ionic medium. Basic research objectives in environmental monitoring are examined, taking into account ionospheric research, magnetospheric research, interplanetary field and solar wind research, solar radiation and magnetic field research, and propagation studies. Operational systems which basic research will support are related to communications systems, navigation systems, and surveillance. Environmental effects/system deficiencies by frequency band are discussed, giving attention to the ELF frequency band (30-300 Hz), the VLF band (3-30 kHz), the MF/HF band (300 kHz - 30 MHz), and the UHF/SHF (300 MHz - 30 GHz). It is concluded that there is already a need to study the ionosphere and its coupling to the magnetosphere above and the troposphere below in order to more fully develop the insight required to specify the radiowave propagation effects introduced by the various media.
- Publication:
-
In: Symposium on the Effect of the Ionosphere on Radiowave Systems
- Pub Date:
- 1981
- Bibcode:
- 1981eirs.sympQ....G
- Keywords:
-
- Atmospheric Physics;
- Ionospheric Propagation;
- Spacecraft Communication;
- Technology Assessment;
- Atmospheric Models;
- Environmental Monitoring;
- Ionospheric Sounding;
- Spatial Distribution;
- Temporal Distribution;
- Very High Frequencies;
- Communications and Radar