A Multi-Parameter Calibration Method Based on the Newton Method and the Genetic Algorithm in Airborne Array Synthetic Aperture Radar Article Swipe
Dawei Wang
,
Zhenhua Li
,
Fubo Zhang
,
Longyong Chen
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.3390/rs16244677
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.3390/rs16244677
Airborne array synthetic aperture radar (SAR) can achieve three-dimensional (3D) imaging of the observed scene in a single flight. Nevertheless, the imaging process of airborne array SAR is subject to various parameter errors due to unstable factors. Such errors degrade the quality of 3D imaging, particularly for the elevation imaging results, which necessitates the employment of super-resolution algorithms. The most significant error parameters include the amplitude and phase imbalances between multiple channels, as well as the phase-center positions of each channel. Owing to the coupled nature of these parameter errors, the calibration accuracy for each parameter independently is relatively sub-par, while super-resolution algorithms have strict demands for parameter precision. Addressing these challenges, this article proposes a multi-parameter calibration method for airborne array SAR based on the Newton method and the genetic algorithm. Initially, a least squares model for multi-parameter calibration is established, followed by leveraging the global optimization characteristics of genetic algorithms and the rapid convergence property of the Newton method. The genetic algorithm is utilized to locate a sub-optimal solution in proximity to the optimal one, subsequently converging swiftly to the optimal solution via the Newton method, which incorporates second-order information. This approach averts the pitfalls of local convergence due to large initial value errors, thereby enhancing the algorithm’s robustness. The proposed method effectively enhances the precision of multi-parameter calibration, which is of significant importance in ensuring the quality of 3D imaging of airborne array SAR.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/rs16244677
- https://www.mdpi.com/2072-4292/16/24/4677/pdf?version=1734231329
- OA Status
- gold
- References
- 38
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4405444820
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- OpenAlex ID
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https://openalex.org/W4405444820Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.3390/rs16244677Digital Object Identifier
- Title
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A Multi-Parameter Calibration Method Based on the Newton Method and the Genetic Algorithm in Airborne Array Synthetic Aperture RadarWork title
- Type
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articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2024Year of publication
- Publication date
-
2024-12-15Full publication date if available
- Authors
-
Dawei Wang, Zhenhua Li, Fubo Zhang, Longyong ChenList of authors in order
- Landing page
-
https://doi.org/10.3390/rs16244677Publisher landing page
- PDF URL
-
https://www.mdpi.com/2072-4292/16/24/4677/pdf?version=1734231329Direct link to full text PDF
- Open access
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YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
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https://www.mdpi.com/2072-4292/16/24/4677/pdf?version=1734231329Direct OA link when available
- Concepts
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Algorithm, Computer science, Calibration, Synthetic aperture radar, Robustness (evolution), Genetic algorithm, Radar, Convergence (economics), Mathematics, Computer vision, Telecommunications, Economics, Economic growth, Statistics, Biochemistry, Machine learning, Chemistry, GeneTop concepts (fields/topics) attached by OpenAlex
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0Total citation count in OpenAlex
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38Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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| display_name | A Multi-Parameter Calibration Method Based on the Newton Method and the Genetic Algorithm in Airborne Array Synthetic Aperture Radar |
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