Improved Methods for Fourier-Based Microwave Imaging
Fourier-based imaging has been widely adopted for microwave imaging thanks to its efficiency in terms of computational complexity without compromising image resolution. Together with other backpropagation imaging algorithms like delay-and-sum (DAS), they are based on a far-field approach to the elec...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/22/9250 |
| _version_ | 1797457777977720832 |
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| author | Yuri Alvarez López Fernando Las-Heras Andrés |
| author_facet | Yuri Alvarez López Fernando Las-Heras Andrés |
| author_sort | Yuri Alvarez López |
| collection | DOAJ |
| description | Fourier-based imaging has been widely adopted for microwave imaging thanks to its efficiency in terms of computational complexity without compromising image resolution. Together with other backpropagation imaging algorithms like delay-and-sum (DAS), they are based on a far-field approach to the electromagnetic expression relating to fields and sources. To improve the accuracy of these techniques, this contribution presents a modified version of the well-known Fourier-based algorithm by taking into account the field radiated by the Tx/Rx antennas of the microwave imaging system. The impact on the imaged targets is discussed, providing a quantitative and qualitative analysis. The performance of the proposed method for subsampled microwave imaging scenarios is compared against other well-known aliasing mitigation methods. |
| first_indexed | 2024-03-09T16:27:50Z |
| format | Article |
| id | doaj.art-cedcfabd3dce4cceb3bc714d47aff194 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T16:27:50Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-cedcfabd3dce4cceb3bc714d47aff1942023-11-24T15:05:55ZengMDPI AGSensors1424-82202023-11-012322925010.3390/s23229250Improved Methods for Fourier-Based Microwave ImagingYuri Alvarez López0Fernando Las-Heras Andrés1Area of Signal Theory and Communications, Department of Electrical Engineering, Universidad de Oviedo, Edificio Polivalente, Mod. 8, Campus Universitario de Gijón, 33203 Gijón, SpainArea of Signal Theory and Communications, Department of Electrical Engineering, Universidad de Oviedo, Edificio Polivalente, Mod. 8, Campus Universitario de Gijón, 33203 Gijón, SpainFourier-based imaging has been widely adopted for microwave imaging thanks to its efficiency in terms of computational complexity without compromising image resolution. Together with other backpropagation imaging algorithms like delay-and-sum (DAS), they are based on a far-field approach to the electromagnetic expression relating to fields and sources. To improve the accuracy of these techniques, this contribution presents a modified version of the well-known Fourier-based algorithm by taking into account the field radiated by the Tx/Rx antennas of the microwave imaging system. The impact on the imaged targets is discussed, providing a quantitative and qualitative analysis. The performance of the proposed method for subsampled microwave imaging scenarios is compared against other well-known aliasing mitigation methods.https://www.mdpi.com/1424-8220/23/22/9250Fourier-based imagingmicrowave imagingplane wave spectrum (PWS)antenna measurementdelay-and-sum (DAS) |
| spellingShingle | Yuri Alvarez López Fernando Las-Heras Andrés Improved Methods for Fourier-Based Microwave Imaging Sensors Fourier-based imaging microwave imaging plane wave spectrum (PWS) antenna measurement delay-and-sum (DAS) |
| title | Improved Methods for Fourier-Based Microwave Imaging |
| title_full | Improved Methods for Fourier-Based Microwave Imaging |
| title_fullStr | Improved Methods for Fourier-Based Microwave Imaging |
| title_full_unstemmed | Improved Methods for Fourier-Based Microwave Imaging |
| title_short | Improved Methods for Fourier-Based Microwave Imaging |
| title_sort | improved methods for fourier based microwave imaging |
| topic | Fourier-based imaging microwave imaging plane wave spectrum (PWS) antenna measurement delay-and-sum (DAS) |
| url | https://www.mdpi.com/1424-8220/23/22/9250 |
| work_keys_str_mv | AT yurialvarezlopez improvedmethodsforfourierbasedmicrowaveimaging AT fernandolasherasandres improvedmethodsforfourierbasedmicrowaveimaging |