Design of Vortex Forward-Looking SAR Imaging using OAM Beam Modulation.
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| Title: | Design of Vortex Forward-Looking SAR Imaging using OAM Beam Modulation. |
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| Authors: | Cheng, Gaolong1 chenggaolong3@gmail.com, Li, Ping1 liping@smic.edu.cn |
| Source: | Applied Computational Electromagnetics Society Journal. May2025, Vol. 40 Issue 5, p419-427. 9p. |
| Subjects: | Synthetic aperture radar, Azimuth, Electromagnetic waves, Radio transmitter-receivers, Doppler radar |
| Abstract: | Forward-looking synthetic aperture radar (SAR) systems often suffer from low resolution and blurred imaging in the azimuthal direction due to the limited variation in Doppler frequency. To address this issue, this paper proposes a novel forward-looking SAR imaging technique leveraging vortex electromagnetic waves and orbital angular momentum (OAM) modulation. The core innovation lies in introducing a new azimuthal Doppler frequency component by establishing a linear relationship between the OAM mode number and slow-time, significantly enhancing azimuthal reso-lution.The method employs a transceiver system comprising a uniform circular array for transmission, with a single antenna at the center of the array for reception. Additionally, the traditional Range-Doppler (RD) algorithm is optimized to suppress motion-induced azimuthal Doppler interference and isolate mode-induced Doppler effects. Simulation results demonstrate that the proposed method effectively expands the azimuthal Doppler bandwidth, resolving left-right target ambiguity and substantially improving azimuthal imaging quality in forward-looking SAR systems. [ABSTRACT FROM AUTHOR] |
| Copyright of Applied Computational Electromagnetics Society Journal is the property of River Publishers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 187733327 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Design of Vortex Forward-Looking SAR Imaging using OAM Beam Modulation. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Cheng%2C+Gaolong%22">Cheng, Gaolong</searchLink><relatesTo>1</relatesTo><i> chenggaolong3@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Ping%22">Li, Ping</searchLink><relatesTo>1</relatesTo><i> liping@smic.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Applied+Computational+Electromagnetics+Society+Journal%22">Applied Computational Electromagnetics Society Journal</searchLink>. May2025, Vol. 40 Issue 5, p419-427. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Synthetic+aperture+radar%22">Synthetic aperture radar</searchLink><br /><searchLink fieldCode="DE" term="%22Azimuth%22">Azimuth</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+waves%22">Electromagnetic waves</searchLink><br /><searchLink fieldCode="DE" term="%22Radio+transmitter-receivers%22">Radio transmitter-receivers</searchLink><br /><searchLink fieldCode="DE" term="%22Doppler+radar%22">Doppler radar</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Forward-looking synthetic aperture radar (SAR) systems often suffer from low resolution and blurred imaging in the azimuthal direction due to the limited variation in Doppler frequency. To address this issue, this paper proposes a novel forward-looking SAR imaging technique leveraging vortex electromagnetic waves and orbital angular momentum (OAM) modulation. The core innovation lies in introducing a new azimuthal Doppler frequency component by establishing a linear relationship between the OAM mode number and slow-time, significantly enhancing azimuthal reso-lution.The method employs a transceiver system comprising a uniform circular array for transmission, with a single antenna at the center of the array for reception. Additionally, the traditional Range-Doppler (RD) algorithm is optimized to suppress motion-induced azimuthal Doppler interference and isolate mode-induced Doppler effects. Simulation results demonstrate that the proposed method effectively expands the azimuthal Doppler bandwidth, resolving left-right target ambiguity and substantially improving azimuthal imaging quality in forward-looking SAR systems. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Applied Computational Electromagnetics Society Journal is the property of River Publishers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.13052/2025.ACES.J.400505 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 419 Subjects: – SubjectFull: Synthetic aperture radar Type: general – SubjectFull: Azimuth Type: general – SubjectFull: Electromagnetic waves Type: general – SubjectFull: Radio transmitter-receivers Type: general – SubjectFull: Doppler radar Type: general Titles: – TitleFull: Design of Vortex Forward-Looking SAR Imaging using OAM Beam Modulation. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Cheng, Gaolong – PersonEntity: Name: NameFull: Li, Ping IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 10544887 Numbering: – Type: volume Value: 40 – Type: issue Value: 5 Titles: – TitleFull: Applied Computational Electromagnetics Society Journal Type: main |
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