High latitude ionospheric irregularities of various scale sizes, which are mostly driven by the coupling processes between the solar wind and Earth's magnetic field, frequently result in phase scintillations over auroral oval and polar cap regions. Strong phase scintillations may cause a GNSS receiver to lose track of some satellites in view. Furthermore, rapid fluctuations in the ionospheric electron content may interfere with cycle slip detection and repair algorithms. These can result in degraded GNSS positioning accuracy. Similar to moving receivers, precise epoch solutions for static stations are also crucial for reliable interpretation of position estimates in applications such as earthquake monitoring. Depending on the scale size of the ionospheric irregularities causing phase scintillations, multi constellation GNSS processing can be effective to overcome decreased number of locked satellites. This is also relevant in high latitude regions with the lack of high elevation angle GPS satellites.
High latitude ionospheric disturbances: Characterization and effects on GNSS precise point positioning
01.10.2015
1285230 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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