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Operational Communication Systems and Relationship to Ionosphere and Space Weather

Operational Communication Systems and Relationship to Ionosphere and Space Weather. Emrah Gülay Aerospace Engineering Department METU. 20/12/2205. OUTLINE. Ionosphere and Relationship to Communication Daily Ionospheric Variations Ionospheric Variations D ue to Seasons

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Operational Communication Systems and Relationship to Ionosphere and Space Weather

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  1. OperationalCommunication Systems and Relationship to Ionosphere and Space Weather Emrah Gülay Aerospace Engineering Department METU 20/12/2205

  2. OUTLINE • Ionosphere and Relationship to Communication • Daily Ionospheric Variations • Ionospheric Variations Due to Seasons • Ionospheric Variations Due to Latitude • Ionospheric Scintillation • Space WeatherandRelationship to Communication • Solar Cycle • Solar Flare

  3. Ionosphere and Relationship to Communication Ionosphere extends from a height of 50 km to 500 km above the surface of the Earth. Regions in the Ionosphere • D region 50 to 90 km • E region 90 to 140 km • F1 region 140 to 210 km • F2 region over 210 km

  4. Day and night structure of the ionosphere www.ips.gov.au

  5. Daily Ionospheric Variations E and F layer frequencies for a Singapore to Ho Chi Minh circuit sometime in a solar cycle. www.ips.gov.au

  6. Day and night structure of the ionosphere www.ips.gov.au

  7. Ionospheric Variations due to Seasons • Summer noon frequencies generally greater than those in winter. • However around solar maximum wintwr frequencies tend to be higher than those in summer.

  8. Ionospheric Variations due to Seasons During summer season frequencies are generally greater than those in winter www.ips.gov.au/Educational

  9. Ionospheric Variations Due to Latitude www.colorado.edu/ news/releases

  10. Ionospheric Scintillation Low band microwave communication or navigation systems may be subjected todegradation due to Ionospheric scintillation www.suite101.com/files/topics/13646/files

  11. Space WeatherandRelationship to Communication Solar Cycle www.ips.gov.au/ Educational

  12. Solar Flare Solar Flares are huge explosions on the Sun which emits radiation. www.deanesmay.com/images/solar_flare

  13. REFERENCES • www.deanesmay.com • www.ips.gov.au/Educational • www.colorado.edu • hesperia.gsfc.nasa.gov/hessi

  14. www-ssc.igpp.ucla.edu/gem/event_nov93/images/93nov01.gif

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