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Seasonal Variations of Atmospheric Radio Noise Field Strength of Sunrise and Sunset during Minimum Solar Cycle Over Baghdad | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 26, Issue 1, 2015, Pages 110-112 | ||
| Author | ||
| Fahmi. A. Mohammed | ||
| Abstract | ||
| This paper includes studying the seasonal variations in radio signal strength and its interference, due to atmospheric noise, which is caused by electric discharge in the atmosphere and emitted by thunder-storms at sunrise and sunset during minimum solar cycle, as well as, variations with bandwidth of radio receiver. In general, it is found that interference is stronger in Winter months than in Summer months during sunrise, while it is smaller in Winter months than in Summer months during sunset. It is found that the interference is stronger in Autumn months than in Spring months during sunrise and is stronger in Spring months than in Autumn months during sunset and for any bandwidth used. This investigation also showed that the interference increases with increasing radio receiver bandwidth | ||
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