DTIC ADA141236: Modelling of Ionospheric Irregularities and pdf

DTIC ADA141236: Modelling of Ionospheric Irregularities and

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F-region irregularities near the equator are viewed from the concept of the temporal structure of UHF scintillations and the electron content depletions associated with VHF, UHF and GHz scintillations. Near the equatorial anomaly crest, the solar cycle effect on GHz scintillation and the depolarization of VHF satellite signals are probed along with electron density irregularities using in-situ data coupled with VHF/GHJz scintillation. Occurrence of nighttime VHF scintillation in the Indian sector near the anomaly is addressed. In the midlatitude sector, coordinated incoherent scatter radar, total electron content and scintillation measurements are studied in the investigation of the generation of km-scale irregularities which spatial variability of total electron content is analyzed in the Mediterranean region. At high latitudes, in-situ measurements provide the opportunity for scintillation modelling which low-energy electron precipitation measurements have been correlated with scintillations/TEC in the auroral oval. The nature of ionospheric irregularities generated by high-power, high-frequency heating has also been investigated and shown to vary between two sites studied

• Creator/s: Defense Technical Information Center
• Date: 12/1/1983
• Year: 1983
• Book Topics/Themes: DTIC Archive, Basu, S, EMMANUEL COLL BOSTON MASS PHYSICS RESEARCH DIV, *Ionosphere, Variations, Electrons, Ionospheric propagation, Scintillation, Heating, Radio signals

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