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Improved wideband sparse array synthesis with minimum element spacing constraint using sparse reconstruction.

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Title: Improved wideband sparse array synthesis with minimum element spacing constraint using sparse reconstruction.
Authors: Zhou, Wenjing1 (AUTHOR), Zhou, Hongen2 (AUTHOR), Shen, Mingwei3 (AUTHOR) smw_hhu1981@163.com
Source: Journal of Electromagnetic Waves & Applications. Jul2026, Vol. 40 Issue 11, p1882-1895. 14p.
Subjects: Sparse approximations, Array processing, Iterative methods (Mathematics), Sparse matrices, Signal processing
Abstract: A sparse reconstruction strategy based on wideband aperture crossing correction and minimum array spacing constraint is proposed for the wideband sparse array synthesis problem with mutual coupling of array elements. The dictionary matrix after high-precision delay compensation using integer delay lines and low complexity Farrow structured variable fractional delay (LcFarrow-VFD) filters is constructed. By introducing the class focusing matrix, the phase compensation term and the sparse excitation value are solved simultaneously to reduce the dictionary matrix dimension. The cost function is established based on the minimum array spacing constraint, and the class binary reweighted alternating iterative algorithm is proposed. The experimental results show that under the minimum array spacing control, the main lobe normalization error of the multisampling frequency pattern is within 0.1dB, the maximum side lobe level is lower than −15dB, and the sparse rate of the array element is close to 40%. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Electromagnetic Waves & Applications is the property of Taylor & Francis Ltd 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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DbLabel: Engineering Source
An: 195126897
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  Data: Improved wideband sparse array synthesis with minimum element spacing constraint using sparse reconstruction.
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  Data: <searchLink fieldCode="AR" term="%22Zhou%2C+Wenjing%22">Zhou, Wenjing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Hongen%22">Zhou, Hongen</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shen%2C+Mingwei%22">Shen, Mingwei</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> smw_hhu1981@163.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Electromagnetic+Waves+%26+Applications%22">Journal of Electromagnetic Waves & Applications</searchLink>. Jul2026, Vol. 40 Issue 11, p1882-1895. 14p.
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  Data: <searchLink fieldCode="DE" term="%22Sparse+approximations%22">Sparse approximations</searchLink><br /><searchLink fieldCode="DE" term="%22Array+processing%22">Array processing</searchLink><br /><searchLink fieldCode="DE" term="%22Iterative+methods+%28Mathematics%29%22">Iterative methods (Mathematics)</searchLink><br /><searchLink fieldCode="DE" term="%22Sparse+matrices%22">Sparse matrices</searchLink><br /><searchLink fieldCode="DE" term="%22Signal+processing%22">Signal processing</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A sparse reconstruction strategy based on wideband aperture crossing correction and minimum array spacing constraint is proposed for the wideband sparse array synthesis problem with mutual coupling of array elements. The dictionary matrix after high-precision delay compensation using integer delay lines and low complexity Farrow structured variable fractional delay (LcFarrow-VFD) filters is constructed. By introducing the class focusing matrix, the phase compensation term and the sparse excitation value are solved simultaneously to reduce the dictionary matrix dimension. The cost function is established based on the minimum array spacing constraint, and the class binary reweighted alternating iterative algorithm is proposed. The experimental results show that under the minimum array spacing control, the main lobe normalization error of the multisampling frequency pattern is within 0.1dB, the maximum side lobe level is lower than −15dB, and the sparse rate of the array element is close to 40%. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Electromagnetic Waves & Applications is the property of Taylor & Francis Ltd 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:
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      – Type: doi
        Value: 10.1080/09205071.2026.2659731
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 14
        StartPage: 1882
    Subjects:
      – SubjectFull: Sparse approximations
        Type: general
      – SubjectFull: Array processing
        Type: general
      – SubjectFull: Iterative methods (Mathematics)
        Type: general
      – SubjectFull: Sparse matrices
        Type: general
      – SubjectFull: Signal processing
        Type: general
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      – TitleFull: Improved wideband sparse array synthesis with minimum element spacing constraint using sparse reconstruction.
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            NameFull: Zhou, Wenjing
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            NameFull: Zhou, Hongen
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            NameFull: Shen, Mingwei
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            – D: 15
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
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            – TitleFull: Journal of Electromagnetic Waves & Applications
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