HF Propagation Experiments Through Ionospheric Heated Regions Using e-POP
Abstract
High power HF radio waves interacting with the ionosphere provide aeronomers with a unique space-based laboratory capability. Operating ground transmitters in conjunction with satellite detection allows novel measurements not previously attempted. The Enhanced Polar Outflow Probe (e-POP) suite of instruments and particularly the ePOP Radio Receiver Instrument (RRI) on board the Canadian CASSIOPE satellite offer a unique combination diagnostics appropriate for studying linear and non-linear plasma effects generated high-power HF waves in the ionosphere.
The HF heating facilities at Arecibo and HAARP have both shown to produce ionospheric disturbances large enough to disrupt the transmission of HF signals propagating through the heated regions. The e-POP satellite has been used to collect ground transmissions from directly beneath the heated region as well as oblique propagation from SuperDARN signals. RRI data from e-POP have been analyzed to understand how regions of enhanced ionization contribute to signal loss. The data collected from e-POP were analyzed using over-the-horizon radar techniques to produce range and Doppler positions for the CASSIOPE satellite. Stimulated Electromagnetic Emissions (SEE) were also collected using ground-based HF antennas several kilometers away from AO. These dual measurements provide an insight for how the ionosphere distorts the signal through received phase and time delays. Additionally, the recorded e-POP signals provide an opportunity to study nonlinear wave propagation, dispersion and scattering effects seen at heating facilities. This research is sponsored by the NRL 6.1 base program.- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFMSA23A3181B
- Keywords:
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- 0340 Middle atmosphere: composition and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTUREDE: 0355 Thermosphere: composition and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTUREDE: 2427 Ionosphere/atmosphere interactions;
- IONOSPHEREDE: 2499 General or miscellaneous;
- IONOSPHERE