SAIP 2011 Support
Investigating the effect of atmospheric dymanics on HF propagation
Presented by Ms. Racheal ATHIENO on 14 Jul 2011 from 17:00 to 19:00
Type: Poster Presentation
Track: Track D2 - Space Science
<p>HF propagation involves transmission and reception of radio signals within a frequency range of 3 − 30 MHz. It finds applications in a number of communication fields such as international short wave broadcasting, mobile telephone systems, radio navigation and operation of radar systems. However, it depends on the ionosphere which is constantly varying mainly due changes in the neutral atmosphere which are a consequence of atmospheric dynamics. In this paper, we investigate the effect of atmospheric dynamics on High Frequency (HF) propagation using the co-located radars at SANSA Space Science (19.2o E, 34.4o S), Hermanus, South Africa. These radars include the HF Doppler radar, Ionosonde, Global Positioning System (GPS) receiver and GPS Ionospheric Scintillation Total Electron Content (TEC) Monitor (GISTM). HF propagation results from the HF Doppler radar are presented. The comparison of results of the HF Doppler radar with other radars is also included. Results show that radio communication is affected by atmospheric dynamics which results into signal fading or at worst signal loss.
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