Interferometric Imaging with EISCAT_3D for Fine-Scale In-Beam Incoherent Scatter Spectra Measurements Article Swipe
Devin Huyghebaert
,
B. Gustavsson
,
Juha Vierinen
,
Andreas Kvammen
,
M. D. Zettergren
,
John Swoboda
,
Ilkka Virtanen
,
Spencer Hatch
,
K. M. Laundal
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.5194/egusphere-2024-802
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.5194/egusphere-2024-802
The 233 MHz EISCAT_3D radar system currently under construction in northern Fennoscandia will be able to resolve ionospheric structures smaller than the transmit beam dimensions through the use of interferometric imaging. This capability is made possible by the modular design and digitisation of the 119 91-antenna panels located at the main Skibotn site. The main array consists of a cluster of 109 panels, with 10 outlier panels producing unique interferometry baselines. In the present study synthesized incoherent scatter radar signal measurements are used for interferometric imaging analysis with the EISCAT_3D system. The Geospace Environment Model of Ion-Neutral Interactions (GEMINI) model is used to simulate a Kelvin-Helmholtz instability in the cusp region at 50 m resolution to obtain plasma parameters which are then used to generate the synthetic data. The ionospheric data is forward propagated to the EISCAT_3D array, noise is added to the synthetic data, and then an inversion of the data is performed to reconstruct the incoherent scatter spectra at relatively fine scales. By using Singular Value Decomposition (SVD) with Tikhonov regularization it is possible to pre-calculate the inversion matrix for a given range and look direction, with the regularization value scaled based on the SNR. The pre-calculation of the inversion matrix can reduce computational overhead in the imaging solution. This study provides a framework for data processing of ion-line incoherent scatter radar spectra to be imaged on fine-scales. Furthermore, with more development it can be used to test experimental set-ups and to design experiments for EISCAT_3D by investigating the needed integration time for various signal-to-noise ratios, beam patterns and ionospheric conditions.
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Metadata
- Type
- preprint
- Language
- en
- Landing Page
- https://doi.org/10.5194/egusphere-2024-802
- https://egusphere.copernicus.org/preprints/2024/egusphere-2024-802/egusphere-2024-802.pdf
- OA Status
- gold
- Cited By
- 2
- References
- 16
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4393234021
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4393234021Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.5194/egusphere-2024-802Digital Object Identifier
- Title
-
Interferometric Imaging with EISCAT_3D for Fine-Scale In-Beam Incoherent Scatter Spectra MeasurementsWork title
- Type
-
preprintOpenAlex work type
- Language
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enPrimary language
- Publication year
-
2024Year of publication
- Publication date
-
2024-03-27Full publication date if available
- Authors
-
Devin Huyghebaert, B. Gustavsson, Juha Vierinen, Andreas Kvammen, M. D. Zettergren, John Swoboda, Ilkka Virtanen, Spencer Hatch, K. M. LaundalList of authors in order
- Landing page
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https://doi.org/10.5194/egusphere-2024-802Publisher landing page
- PDF URL
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https://egusphere.copernicus.org/preprints/2024/egusphere-2024-802/egusphere-2024-802.pdfDirect link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
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goldOpen access status per OpenAlex
- OA URL
-
https://egusphere.copernicus.org/preprints/2024/egusphere-2024-802/egusphere-2024-802.pdfDirect OA link when available
- Concepts
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Interferometry, Optics, Spectral line, Incoherent scatter, Scale (ratio), Remote sensing, Physics, Beam (structure), Geology, Astronomy, Scattering, Quantum mechanicsTop concepts (fields/topics) attached by OpenAlex
- Cited by
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2Total citation count in OpenAlex
- Citations by year (recent)
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2025: 1, 2024: 1Per-year citation counts (last 5 years)
- References (count)
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16Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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| display_name | Interferometric Imaging with EISCAT_3D for Fine-Scale In-Beam Incoherent Scatter Spectra Measurements |
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