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Assimilation of radio sounding measurements — Global Navigation Satellite System (GNSS) data, ionosondes, beacon satellites, and more — of the ionosphere has been ongoing for over a decade, and has enabled ionospheric plasma mapping at global scales and at unprecedented resolution. Data assimilative technology has allowed us to sense and map the redistribution of plasma in response to stormtime forcing,...
Variations in plasma density in the ionospheric layer can cause fluctuations in the received amplitude or phase of a trans-ionospherically propagating radio wave. Such fluctuations are termed scintillation, and can lead to loss of continuity in radio-navigation for users of Global Navigation Satellite Systems (GNSS) such as GPS, Beidou, GLONASS, and Galileo. A scintillating signal can cause a user's...
Auroral zone irregularities affect a broad swath of radio frequencies through rapid phase fluctuations in the received signal experienced by the receiver, known as scintillation. Scintillation can lead to loss of HF communications and L-band satellite-based navigation through receiver loss of lock. For this reason, the ability to quantify the severity and predict the occurrence of high-latitude scintillation...
We present a method by which we combine IRI-95 predictions of electron density with ionospheric tomography data to provide an improved electron density estimate. We discuss the observation that IRI-95 produced ionospheres have a topside description which is too thick when compared to CIT reconstructions. A technique for ionospheric data ingestion is discussed. The algorithm is capable of ingesting...
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