A Novel Multi-Beam SAR Two-Dimensional Ambiguity Suppression Method Based on Azimuth Phase Coding Article Swipe
Yihao Xu
,
Fubo Zhang
,
Wenjie Li
,
Yangliang Wan
,
Longyong Chen
,
Tao Jiang
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.3390/rs16132298
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.3390/rs16132298
In order to address the problems of range ambiguity and azimuth ambiguity in the wide-swath imaging of synthetic aperture radar (SAR), this paper proposes a multi-beam SAR two-dimensional ambiguity suppression method based on azimuth phase coding (APC). The scheme employs an elevation simultaneous multi-beam transmission system with azimuth under-sampling, transmitting different APC waveforms to various range-ambiguous sub-regions. After receiving the echoes, the azimuth digital beamforming (DBF) is used to separate the APC waveform echoes with multi-order Doppler ambiguity, achieving azimuth reconstruction and range ambiguity suppression simultaneously. Finally, the elevation nulling DBF is used to further suppress range ambiguity and obtain the SAR wide-swath image. The superiority of this scheme is reflected in the following aspects: the azimuth DBF simultaneously suppresses azimuth and range ambiguity, the influence of height fluctuations on the ability to suppress range ambiguity is weakened, the use of elevation nulling DBF further enhances the level of range ambiguity suppression, and different range sub-regions can adopt different range resolutions and working modes. The feasibility of this scheme is verified through theoretical analysis and simulation.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/rs16132298
- https://www.mdpi.com/2072-4292/16/13/2298/pdf?version=1719214298
- OA Status
- gold
- References
- 34
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4399976819
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4399976819Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/rs16132298Digital Object Identifier
- Title
-
A Novel Multi-Beam SAR Two-Dimensional Ambiguity Suppression Method Based on Azimuth Phase CodingWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2024Year of publication
- Publication date
-
2024-06-24Full publication date if available
- Authors
-
Yihao Xu, Fubo Zhang, Wenjie Li, Yangliang Wan, Longyong Chen, Tao JiangList of authors in order
- Landing page
-
https://doi.org/10.3390/rs16132298Publisher landing page
- PDF URL
-
https://www.mdpi.com/2072-4292/16/13/2298/pdf?version=1719214298Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
-
https://www.mdpi.com/2072-4292/16/13/2298/pdf?version=1719214298Direct OA link when available
- Concepts
-
Azimuth, Coding (social sciences), Computer science, Remote sensing, Phase (matter), Optics, Geology, Physics, Mathematics, Quantum mechanics, StatisticsTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
0Total citation count in OpenAlex
- References (count)
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34Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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