GPS L1 Scintillation Detection Using a Novel 3-Dimensional PFISR Mode
Abstract
A novel operating mode for PFISR has been refined to support the study of GPS L1 scintillations arising from electron density gradients over Alaska. Previous analyses have indicated a strong correlation between auroral impact ionization and GPS scintillation using PFISR derived electron density data along the GPS line of site, in conjunction with digital all-sky imagery. Previous studies were limited in that they did not provide adequate information on electric fields and plasma drifts. This analysis combines all three techniques with a nominal PFISR mode to determine gradient and plasma parameters as well as the most likely ionospheric source, including a conjunction analysis between GPS signals and known PFISR beams. Radar experiments were conducted with a three-dimensional approach using a central beam along the GPS line of site surrounded by four beams in a cross pattern to detect ionospheric conditions within +/- 2º of the central beam. This mode is embedded within the PFISR low duty cycle International Polar Year (IPY) mode for electric field determination. Digital all-sky imagery where available was used to confirm the auroral activity present. This approach was used to study numerous scintillation events during an observation campaign covering the onset of the 2018-2019 Arctic winter months. Initial results indicate a continued trend of scintillation events linked to primarily E region enhancements.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFMSA14B..07L
- Keywords:
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- 2439 Ionospheric irregularities;
- IONOSPHEREDE: 6929 Ionospheric physics;
- RADIO SCIENCEDE: 6974 Signal processing;
- RADIO SCIENCEDE: 7924 Forecasting;
- SPACE WEATHER