Spatial Resolution in Inverse Problems: The EZIE Satellite Mission Article Swipe
Michael Madelaire
,
K. M. Laundal
,
J. W. Gjerloev
,
Spencer Hatch
,
Jone Peter Reistad
,
Heikki Vanhamäki
,
C. L. Waters
,
Anders Ohma
,
Rafael Mesquita
,
V. G. Merkin
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1029/2023ja031394
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1029/2023ja031394
Inverse modeling has become one of the primary methods for studying ionospheric electrodynamics, especially when using magnetic field measurements from below the ionosphere. We present a method for quantifying the spatial resolution in an inverse model for non‐uniformly sampled spatial data. This method provides a tool for assessing if a model can resolve the physical phenomena of interest. We quantify the spatial resolution for the Spherical Elementary Current System basis functions to model the ionospheric dynamics. Our results apply to models with spatially confined model parameters, unlike spherical harmonics where the model parameters describe the amplitude of global surface functions. The method is demonstrated for the upcoming Electrojet Zeeman Imaging Explorer cubesat mission which will provide spatially distributed remote sensing measurements of the magnetic field in the mesosphere. We show that, including measurements from a single ground magnetometer can significantly improve the spatial resolution. However, the impact of including a ground magnetometer depends on the relative position of the station with respect to the mesospheric measurements. In addition, a method for reducing two regularization parameters to one is presented. Reducing the amount of regularization parameters simplifies the optimization problem and facilitates a fair comparison between the models with and without a ground magnetometer.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1029/2023ja031394
- OA Status
- hybrid
- Cited By
- 20
- References
- 47
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4376637914
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4376637914Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1029/2023ja031394Digital Object Identifier
- Title
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Spatial Resolution in Inverse Problems: The EZIE Satellite MissionWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2023Year of publication
- Publication date
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2023-05-01Full publication date if available
- Authors
-
Michael Madelaire, K. M. Laundal, J. W. Gjerloev, Spencer Hatch, Jone Peter Reistad, Heikki Vanhamäki, C. L. Waters, Anders Ohma, Rafael Mesquita, V. G. MerkinList of authors in order
- Landing page
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https://doi.org/10.1029/2023ja031394Publisher landing page
- Open access
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YesWhether a free full text is available
- OA status
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hybridOpen access status per OpenAlex
- OA URL
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https://doi.org/10.1029/2023ja031394Direct OA link when available
- Concepts
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Magnetometer, Spherical harmonics, Inverse problem, Image resolution, Earth's magnetic field, Remote sensing, Physics, Ionosphere, Magnetic field, Geodesy, Computational physics, Geophysics, Optics, Geology, Mathematics, Mathematical analysis, Quantum mechanicsTop concepts (fields/topics) attached by OpenAlex
- Cited by
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20Total citation count in OpenAlex
- Citations by year (recent)
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2025: 7, 2024: 12, 2023: 1Per-year citation counts (last 5 years)
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-
10Other works algorithmically related by OpenAlex
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