Research Article
Aperture Synthesis Imaging of Ionospheric Irregularities Using Time Diversity MIMO Radar
D. L. Hysell,
J. L. Chau,
Corresponding Author
D. L. Hysell
Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, USA
Correspondence to:
D. L. Hysell,
Contribution: Conceptualization, Methodology, Software, Formal analysis, Investigation, Data curation, Writing - original draft, Visualization, Funding acquisition
Search for more papers by this authorJ. L. Chau
Leibniz Institute of Atmospheric Physics at the University of Rostock, Külungsborn, Germany
Contribution: Conceptualization, Methodology, Formal analysis, Investigation, Writing - review & editing
Search for more papers by this authorD. L. Hysell,
J. L. Chau,
Corresponding Author
D. L. Hysell
Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, USA
Correspondence to:
D. L. Hysell,
Contribution: Conceptualization, Methodology, Software, Formal analysis, Investigation, Data curation, Writing - original draft, Visualization, Funding acquisition
Search for more papers by this authorJ. L. Chau
Leibniz Institute of Atmospheric Physics at the University of Rostock, Külungsborn, Germany
Contribution: Conceptualization, Methodology, Formal analysis, Investigation, Writing - review & editing
Search for more papers by this authorFirst published: 20 September 2023
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.
Key Points
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Multiple-input, multiple output (MIMO) radar imaging method implemented at Jicamarca to observe large-scale waves in the equatorial electrojet
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Specific method involves time division multiplexing or time diversity
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The resolution of the images was increased but is limited by motion of scatterers which needs mitigation
Open Research
Data Availability Statement
Data used for this publication are available through Hysell and Chau (2023).
Supporting Information
| Filename | Description |
|---|---|
| 2023RS007765-sup-0001-Movie SI-S01.mp4502.7 KB | Movie S1 |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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