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Combined Use of the Modified Born and Rytov Approximations in NonIterative Microwave Inverse Imaging With Dominant Current.

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Title: Combined Use of the Modified Born and Rytov Approximations in NonIterative Microwave Inverse Imaging With Dominant Current.
Authors: Yang, Xue1 (AUTHOR), Qi, Xiaokang2 (AUTHOR), Huo, JianJian1 (AUTHOR), Zhou, Tianyi1 (AUTHOR) zhoutianyi@nbu.edu.cn
Source: Microwave & Optical Technology Letters. Jan2026, Vol. 68 Issue 1, p1-6. 6p.
Subjects: Microwave imaging, Born approximation, Electromagnetic wave scattering, Approximation theory, Approximation error, Scattering (Mathematics)
Abstract: The Born approximation (BA) and Rytov approximation (RA) are common in solving electromagnetic inverse scattering problems (ISPs). However, purely applying these approximations only yields rough inversion results. To this end, a noniterative combined modified method using the real part (CMM‐R) is presented to extend the limitation in accuracy and effectiveness encountered by traditional Born/Rytov‐based approaches. Based on the connection between modified RA (MRA) and modified BA (MBA), the complementary strengths of MRA and MBA are integrated. Specifically, these two modified inversion methods are implemented by employing the dominant current, whereas only the real part of MRA is used to mitigate phase wrapping issues. The simulation and experimental results demonstrate that the proposed CMM‐R achieves higher accuracy than traditional modified Born/Rytov‐based methods for imaging mild scatterers. As a noniterative method, CMM‐R provides a robust initial guess for further iterative algorithms. [ABSTRACT FROM AUTHOR]
Copyright of Microwave & Optical Technology Letters is the property of Wiley-Blackwell 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.)
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  Data: Combined Use of the Modified Born and Rytov Approximations in NonIterative Microwave Inverse Imaging With Dominant Current.
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  Data: <searchLink fieldCode="AR" term="%22Yang%2C+Xue%22">Yang, Xue</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qi%2C+Xiaokang%22">Qi, Xiaokang</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huo%2C+JianJian%22">Huo, JianJian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Tianyi%22">Zhou, Tianyi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhoutianyi@nbu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Microwave+%26+Optical+Technology+Letters%22">Microwave & Optical Technology Letters</searchLink>. Jan2026, Vol. 68 Issue 1, p1-6. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Microwave+imaging%22">Microwave imaging</searchLink><br /><searchLink fieldCode="DE" term="%22Born+approximation%22">Born approximation</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+wave+scattering%22">Electromagnetic wave scattering</searchLink><br /><searchLink fieldCode="DE" term="%22Approximation+theory%22">Approximation theory</searchLink><br /><searchLink fieldCode="DE" term="%22Approximation+error%22">Approximation error</searchLink><br /><searchLink fieldCode="DE" term="%22Scattering+%28Mathematics%29%22">Scattering (Mathematics)</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: The Born approximation (BA) and Rytov approximation (RA) are common in solving electromagnetic inverse scattering problems (ISPs). However, purely applying these approximations only yields rough inversion results. To this end, a noniterative combined modified method using the real part (CMM‐R) is presented to extend the limitation in accuracy and effectiveness encountered by traditional Born/Rytov‐based approaches. Based on the connection between modified RA (MRA) and modified BA (MBA), the complementary strengths of MRA and MBA are integrated. Specifically, these two modified inversion methods are implemented by employing the dominant current, whereas only the real part of MRA is used to mitigate phase wrapping issues. The simulation and experimental results demonstrate that the proposed CMM‐R achieves higher accuracy than traditional modified Born/Rytov‐based methods for imaging mild scatterers. As a noniterative method, CMM‐R provides a robust initial guess for further iterative algorithms. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Microwave & Optical Technology Letters is the property of Wiley-Blackwell 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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        Value: 10.1002/mop.70507
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      – Code: eng
        Text: English
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        PageCount: 6
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    Subjects:
      – SubjectFull: Microwave imaging
        Type: general
      – SubjectFull: Born approximation
        Type: general
      – SubjectFull: Electromagnetic wave scattering
        Type: general
      – SubjectFull: Approximation theory
        Type: general
      – SubjectFull: Approximation error
        Type: general
      – SubjectFull: Scattering (Mathematics)
        Type: general
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      – TitleFull: Combined Use of the Modified Born and Rytov Approximations in NonIterative Microwave Inverse Imaging With Dominant Current.
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            NameFull: Yang, Xue
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            NameFull: Qi, Xiaokang
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            NameFull: Huo, JianJian
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            NameFull: Zhou, Tianyi
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            – D: 01
              M: 01
              Text: Jan2026
              Type: published
              Y: 2026
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              Value: 68
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            – TitleFull: Microwave & Optical Technology Letters
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