Variable Frequency Phase Modulation on Time-Modulated Metasurface for SAR Feature Reconstruction.
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| Title: | Variable Frequency Phase Modulation on Time-Modulated Metasurface for SAR Feature Reconstruction. |
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| Authors: | Fang, Yumeng1 (AUTHOR), Wang, Junjie1 (AUTHOR), Sun, Guang1 (AUTHOR), Feng, Dejun1 (AUTHOR) fdj117@nudt.edu.cn |
| Source: | Remote Sensing. Apr2026, Vol. 18 Issue 7, p1060. 25p. |
| Subjects: | Phase modulation, Radar signal processing, Electronic modulation, Scattering (Mathematics), Phase shift keying |
| Abstract: | Highlights: What are the main findings? A SAR feature reconstruction method based on variable frequency phase modulation is proposed, enabling a single metasurface to modulate multiple scattering centers in both range and azimuth dimensions. An analytical inverse model is established to link modulation parameters with the spatial coordinates and amplitudes of generated scattering centers, allowing for the simultaneous reconstruction of target features through independent design of modulation duration and frequency. What are the implications of the main findings? This study marks the first systematic application of variable frequency-modulation techniques to SAR feature reconstruction, breaking through the inherent limitations of traditional one-to-one mapping. It provides a novel technical solution for achieving efficient, flexible, and high-fidelity simulation of complex target electromagnetic characteristics. An inverse analytical expression has been established between the target electromagnetic scattering characteristics and the time-domain modulation parameters of the metasurface. Through independent design of the modulation duration and modulation frequency, simultaneous reconstruction of the position and amplitude information of the generated scattering points is achieved. Time-modulated metasurfaces offer a novel technical approach for actively modulating and reconstructing radar target characteristics through their dynamic control of electromagnetic waves. However, existing SAR feature reconstruction methods based on metasurfaces are typically constrained by a one-to-one mapping mechanism where "a single metasurface unit corresponds to a single scattering center". This results in low reconstruction efficiency and limited flexibility, hindering high-fidelity simulation of complex multi-scatterer targets. Therefore, this paper proposes a variable frequency-phase modulation method on time-modulated metasurfaces for SAR feature reconstruction. The core concept of this method involves decomposing complex targets into discrete scattering centers. By employing a "frequency-modulated continuous-phase modulation" strategy, a tailored modulation scheme is designed for each time-modulated metasurface, generating multiple adjustable false scattering center arrays in both the range and elevation dimensions of SAR imagery. Experimental results demonstrate that this method can effectively reconstruct SAR signatures highly similar to the original target, with similarity metrics exceeding 0.9. This study marks the first systematic application of frequency-modulation techniques to SAR signature reconstruction, breaking through the inherent limitations of traditional one-to-one mapping. It provides a novel theoretical framework and technical solution for achieving efficient, flexible, and high-fidelity simulation of complex target electromagnetic signatures, holding significant application value in fields such as radar countermeasures and signature camouflage. [ABSTRACT FROM AUTHOR] |
| Copyright of Remote Sensing is the property of MDPI 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 |
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| Header | DbId: egs DbLabel: Engineering Source An: 192958595 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Variable Frequency Phase Modulation on Time-Modulated Metasurface for SAR Feature Reconstruction. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Fang%2C+Yumeng%22">Fang, Yumeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Junjie%22">Wang, Junjie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sun%2C+Guang%22">Sun, Guang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Feng%2C+Dejun%22">Feng, Dejun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> fdj117@nudt.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Remote+Sensing%22">Remote Sensing</searchLink>. Apr2026, Vol. 18 Issue 7, p1060. 25p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Phase+modulation%22">Phase modulation</searchLink><br /><searchLink fieldCode="DE" term="%22Radar+signal+processing%22">Radar signal processing</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+modulation%22">Electronic modulation</searchLink><br /><searchLink fieldCode="DE" term="%22Scattering+%28Mathematics%29%22">Scattering (Mathematics)</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+shift+keying%22">Phase shift keying</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Highlights: What are the main findings? A SAR feature reconstruction method based on variable frequency phase modulation is proposed, enabling a single metasurface to modulate multiple scattering centers in both range and azimuth dimensions. An analytical inverse model is established to link modulation parameters with the spatial coordinates and amplitudes of generated scattering centers, allowing for the simultaneous reconstruction of target features through independent design of modulation duration and frequency. What are the implications of the main findings? This study marks the first systematic application of variable frequency-modulation techniques to SAR feature reconstruction, breaking through the inherent limitations of traditional one-to-one mapping. It provides a novel technical solution for achieving efficient, flexible, and high-fidelity simulation of complex target electromagnetic characteristics. An inverse analytical expression has been established between the target electromagnetic scattering characteristics and the time-domain modulation parameters of the metasurface. Through independent design of the modulation duration and modulation frequency, simultaneous reconstruction of the position and amplitude information of the generated scattering points is achieved. Time-modulated metasurfaces offer a novel technical approach for actively modulating and reconstructing radar target characteristics through their dynamic control of electromagnetic waves. However, existing SAR feature reconstruction methods based on metasurfaces are typically constrained by a one-to-one mapping mechanism where "a single metasurface unit corresponds to a single scattering center". This results in low reconstruction efficiency and limited flexibility, hindering high-fidelity simulation of complex multi-scatterer targets. Therefore, this paper proposes a variable frequency-phase modulation method on time-modulated metasurfaces for SAR feature reconstruction. The core concept of this method involves decomposing complex targets into discrete scattering centers. By employing a "frequency-modulated continuous-phase modulation" strategy, a tailored modulation scheme is designed for each time-modulated metasurface, generating multiple adjustable false scattering center arrays in both the range and elevation dimensions of SAR imagery. Experimental results demonstrate that this method can effectively reconstruct SAR signatures highly similar to the original target, with similarity metrics exceeding 0.9. This study marks the first systematic application of frequency-modulation techniques to SAR signature reconstruction, breaking through the inherent limitations of traditional one-to-one mapping. It provides a novel theoretical framework and technical solution for achieving efficient, flexible, and high-fidelity simulation of complex target electromagnetic signatures, holding significant application value in fields such as radar countermeasures and signature camouflage. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Remote Sensing is the property of MDPI 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: 10.3390/rs18071060 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 25 StartPage: 1060 Subjects: – SubjectFull: Phase modulation Type: general – SubjectFull: Radar signal processing Type: general – SubjectFull: Electronic modulation Type: general – SubjectFull: Scattering (Mathematics) Type: general – SubjectFull: Phase shift keying Type: general Titles: – TitleFull: Variable Frequency Phase Modulation on Time-Modulated Metasurface for SAR Feature Reconstruction. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Fang, Yumeng – PersonEntity: Name: NameFull: Wang, Junjie – PersonEntity: Name: NameFull: Sun, Guang – PersonEntity: Name: NameFull: Feng, Dejun IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 04 Text: Apr2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 20724292 Numbering: – Type: volume Value: 18 – Type: issue Value: 7 Titles: – TitleFull: Remote Sensing Type: main |
| ResultId | 1 |
