An Improved Propagator-Based Method for DOA Estimation without the Source Number using a Nested Array.
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| Title: | An Improved Propagator-Based Method for DOA Estimation without the Source Number using a Nested Array. |
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| Authors: | Zhang, Mingfeng1,2 (AUTHOR) 2112204260@mail2.gdut.edu.cn, Gu, Xiaobo1 (AUTHOR) xiaobo.gu@gdut.edu.cn, Chen, Yitong3 (AUTHOR) etone.chan@gmail.com, Fu, Zhe1 (AUTHOR) fuzhe@gdut.edu.cn, Li, Jianzhong1 (AUTHOR) jianzhong.li@gdut.edu.cn |
| Source: | Circuits, Systems & Signal Processing. Aug2025, Vol. 44 Issue 8, p5990-6005. 16p. |
| Subjects: | Multiple Signal Classification, Medical electronics, Random noise theory, Wireless communications, Cumulants |
| Abstract: | Fourth-order cumulants (FOC) are widely adopted in direction of arrival (DOA) estimation due to their capability of mitigating Gaussian noise and constructing virtual arrays. However, the prerequisite of knowing the source number becomes a significant bottleneck when a nested array (NA) is utilized, limiting its practical applications. To address this issue, we propose an improved propagator-based method that eliminates the need for prior knowledge of the source number. By introducing a small-value factor, the proposed method generates an estimator equivalent to the classical multiple signal classification (MUSIC) estimator while retaining the benefits of NA, such as high degrees of freedom and low mutual coupling. Numerical simulations demonstrate the superior performance of the proposed estimator, particularly in scenarios with a large number of signals relative to the number of sensors. Furthermore, experimental results validate the effectiveness of the proposed method in practical situations, showcasing its robustness and accuracy. This approach not only overcomes the limitation of source number estimation but also provides a reliable solution for underdetermined DOA estimation, making it highly applicable in fields such as wireless communications, radar systems, and medical electronics. [ABSTRACT FROM AUTHOR] |
| Copyright of Circuits, Systems & Signal Processing is the property of Springer Nature 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: 186621368 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: An Improved Propagator-Based Method for DOA Estimation without the Source Number using a Nested Array. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Mingfeng%22">Zhang, Mingfeng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> 2112204260@mail2.gdut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Gu%2C+Xiaobo%22">Gu, Xiaobo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> xiaobo.gu@gdut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Yitong%22">Chen, Yitong</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> etone.chan@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Fu%2C+Zhe%22">Fu, Zhe</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> fuzhe@gdut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Jianzhong%22">Li, Jianzhong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jianzhong.li@gdut.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Circuits%2C+Systems+%26+Signal+Processing%22">Circuits, Systems & Signal Processing</searchLink>. Aug2025, Vol. 44 Issue 8, p5990-6005. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Multiple+Signal+Classification%22">Multiple Signal Classification</searchLink><br /><searchLink fieldCode="DE" term="%22Medical+electronics%22">Medical electronics</searchLink><br /><searchLink fieldCode="DE" term="%22Random+noise+theory%22">Random noise theory</searchLink><br /><searchLink fieldCode="DE" term="%22Wireless+communications%22">Wireless communications</searchLink><br /><searchLink fieldCode="DE" term="%22Cumulants%22">Cumulants</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Fourth-order cumulants (FOC) are widely adopted in direction of arrival (DOA) estimation due to their capability of mitigating Gaussian noise and constructing virtual arrays. However, the prerequisite of knowing the source number becomes a significant bottleneck when a nested array (NA) is utilized, limiting its practical applications. To address this issue, we propose an improved propagator-based method that eliminates the need for prior knowledge of the source number. By introducing a small-value factor, the proposed method generates an estimator equivalent to the classical multiple signal classification (MUSIC) estimator while retaining the benefits of NA, such as high degrees of freedom and low mutual coupling. Numerical simulations demonstrate the superior performance of the proposed estimator, particularly in scenarios with a large number of signals relative to the number of sensors. Furthermore, experimental results validate the effectiveness of the proposed method in practical situations, showcasing its robustness and accuracy. This approach not only overcomes the limitation of source number estimation but also provides a reliable solution for underdetermined DOA estimation, making it highly applicable in fields such as wireless communications, radar systems, and medical electronics. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Circuits, Systems & Signal Processing is the property of Springer Nature 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: 10.1007/s00034-025-03078-w Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 5990 Subjects: – SubjectFull: Multiple Signal Classification Type: general – SubjectFull: Medical electronics Type: general – SubjectFull: Random noise theory Type: general – SubjectFull: Wireless communications Type: general – SubjectFull: Cumulants Type: general Titles: – TitleFull: An Improved Propagator-Based Method for DOA Estimation without the Source Number using a Nested Array. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zhang, Mingfeng – PersonEntity: Name: NameFull: Gu, Xiaobo – PersonEntity: Name: NameFull: Chen, Yitong – PersonEntity: Name: NameFull: Fu, Zhe – PersonEntity: Name: NameFull: Li, Jianzhong IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 0278081X Numbering: – Type: volume Value: 44 – Type: issue Value: 8 Titles: – TitleFull: Circuits, Systems & Signal Processing Type: main |
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