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The Weddell Sea Anomaly (WSA) is a summer ionospheric anomaly, which is characterized by a greater nighttime ionospheric density than that in daytime in the region near the Weddell Sea. We investigate the WSA signatures in the ground-based TEC (vertical total electron content) by using GPS and GLONASS measurements of the dense regional GNSS networks in South America. We constructed the high-resolution...
In the paper there are presented occurrence of TEC fluctuations in high latitudes ionosphere during January 7, 2015 events. Such fluctuations occur due to presence different scale irregularities in the polar ionosphere. The fluctuations increase cycle slips trans-ionospheric signals and it degrades the accuracy of GPS positioning. In consequence of which it is important to know the spatial and temporal...
We present the result of investigations of GNSS signal phase fluctuations occurrence during the geomagnetic storm on October 2, 2013. During this space weather event the intense phase fluctuations have been registrated at the permanent GNSS stations located not only in auroral and subauroral regions but even over midlatitude stations. In combination with optical and geomagnetic measurements this fact...
Our research is based on the foremost LEO mission — FORMOSAT-3/COSMIC, a joint scientific mission of Taiwan (NSPO) and the U.S. (NOAA), that was launched on April 2006. The mission placed six micro-satellites into six different orbits at 700∼800 km above the Earth's surface. Each satellite is equipped by BlackJack GPS receiver with 4 antennas: two GPS antennas are employed for radio occultation (RO)...
The plasmaspheric electron content (PEC) was estimated by comparison of GPS TEC observations and FORMOSAT-3/COSMIC radio occultation measurements at the extended solar minimum of cycle 23/24. Results of comparative study revealed that for mid-latitudinal points PEC estimates varied weakly with the time of a day and reached the value of several TECU for the condition of solar minimum. Percentage contribution...
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