The relative importance of meteor burst and other distance polar cap propagation modes in the low VHF band
Abstract
We have analyzed the duty cycle from a very high frequency polar cap path in Greenland. We find that at 35 MHz and 45 MHz the path is often sustained by sporadic E layers rather than by meteor scatter. At the higher frequencies of 65 MHz and 85 MHz we find that the path is generally dominated by meteor scatter modes. The diurnal, seasonal and geomagnetic variations of sporadic E are examined and off line decision aid models are provided to evaluate the magnitude of multiple mechanism propagation on the path.
- Publication:
-
In AGARD
- Pub Date:
- July 1994
- Bibcode:
- 1994mmpp.agar.....C
- Keywords:
-
- E Region;
- High Frequencies;
- Meteoroid Showers;
- Meteoroids;
- Polar Caps;
- Propagation Modes;
- Sporadic E Layer;
- Very High Frequencies;
- Annual Variations;
- Diurnal Variations;
- Geomagnetism;
- Magnetic Variations;
- Communications and Radar