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Aperture Synthesis Imaging of Ionospheric Irregularities Using Time Diversity MIMO Radar

https://doi.org/10.1029/2023RS007765

Hysell, D L; Chau, J L (September 2023, Radio Science)

Abstract Aperture‐synthesis images of ionospheric irregularities in the equatorial electrojet are computed using multiple‐input multiple‐output (MIMO) radar methods at the Jicamarca Radio Observatory. MIMO methods increase the number of distinct interferometry baselines available for imaging (by a factor of essentially three in these experiments) as well as the overall size of the synthetic aperture. The particular method employed here involves time‐division multiplexing or time diversity to distinguish pulses transmitted from different quarters of the Jicamarca array. The method comes at the cost of a large increase in computation time and complexity and a reduced signal‐to‐noise ratio. We discuss the details involved in the signal processing and the trade space involved in image optimization.
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Inferring Zonal Wind Profiles in the Equatorial Electrojet From Coherent Scatter

https://doi.org/10.46620/22-0019

Hysell, D. L.; Chau, J. L.; Conte, J. F.; Flores, R.; Milla, M. A. (January 2022, URSI Radio Science Letters)

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Solar Flare Effects on 150‐km Echoes Observed Over Jicamarca: WACCM‐X Simulations

https://doi.org/10.1029/2019GL084790

Pedatella, N. M.; Chau, J. L.; Vierinen, J.; Qian, L.; Reyes, P.; Kudeki, E.; Lehmacher, G.; Oppenheim, M. (October 2019, Geophysical Research Letters)

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The Case for Combining a Large Low‐Band Very High Frequency Transmitter With Multiple Receiving Arrays for Geospace Research: A Geospace Radar

https://doi.org/10.1029/2018RS006688

Hysell, D. L.; Chau, J. L.; Coles, W. A.; Milla, M. A.; Obenberger, K.; Vierinen, J. (July 2019, Radio Science)

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Gravity Wave-Induced Ionospheric Irregularities in the Postsunset Equatorial Valley Region: GW-INDUCED IRREGULARITIES

https://doi.org/10.1002/2017JA024514

Hysell, D. L.; Fritts, D. C.; Laughman, B.; Chau, J. L. (November 2017, Journal of Geophysical Research: Space Physics)

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