Phase Shift Migration With SIMO Superposition for MIMO-Sidelooking Imaging at Terahertz Band
In this paper, the enhanced phase shift migration (PSM) algorithm for multi-input-multi-output (MIMO) side-looking (SL) scheme was proposed for the 2-dimension (2D) fast image reconstruction in the terahertz (THz) band. By decomposing the MIMO imaging problem into a superposition of several single-i...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9170503/ |
| _version_ | 1819132703223578624 |
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| author | Guan Yang Chao Li Hang Gao Guangyou Fang |
| author_facet | Guan Yang Chao Li Hang Gao Guangyou Fang |
| author_sort | Guan Yang |
| collection | DOAJ |
| description | In this paper, the enhanced phase shift migration (PSM) algorithm for multi-input-multi-output (MIMO) side-looking (SL) scheme was proposed for the 2-dimension (2D) fast image reconstruction in the terahertz (THz) band. By decomposing the MIMO imaging problem into a superposition of several single-input-multiple-output (SIMO) sub-arrays, the proposed algorithm can be applied to systems with randomly distributed transmitting array. By deriving and applying the modified phase shift factor and necessary phase compensation, zero-padding in the transmitting array and data reorganization in the spatial-frequency domain of the conventional wavenumber domain MIMO algorithm can be totally avoided, which will hopefully further reduce the amount of calculation. A comprehensive MIMO-SL-EPSM algorithm was established in the wavenumber domain. Proof-of-principle experiments in the 0.1-THz band were performed based on a MIMO-SL prototype system. The reconstructed images for different targets with high efficiency and quality demonstrate the theoretical results and the effectiveness of the proposed algorithm. |
| first_indexed | 2024-12-22T09:35:37Z |
| format | Article |
| id | doaj.art-65a231d62c1e4350bb4348fd77999dd8 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-22T09:35:37Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-65a231d62c1e4350bb4348fd77999dd82022-12-21T18:30:50ZengIEEEIEEE Access2169-35362020-01-01820841820842610.1109/ACCESS.2020.30176179170503Phase Shift Migration With SIMO Superposition for MIMO-Sidelooking Imaging at Terahertz BandGuan Yang0https://orcid.org/0000-0002-3357-3046Chao Li1https://orcid.org/0000-0001-5230-3431Hang Gao2https://orcid.org/0000-0001-5832-7768Guangyou Fang3Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaIn this paper, the enhanced phase shift migration (PSM) algorithm for multi-input-multi-output (MIMO) side-looking (SL) scheme was proposed for the 2-dimension (2D) fast image reconstruction in the terahertz (THz) band. By decomposing the MIMO imaging problem into a superposition of several single-input-multiple-output (SIMO) sub-arrays, the proposed algorithm can be applied to systems with randomly distributed transmitting array. By deriving and applying the modified phase shift factor and necessary phase compensation, zero-padding in the transmitting array and data reorganization in the spatial-frequency domain of the conventional wavenumber domain MIMO algorithm can be totally avoided, which will hopefully further reduce the amount of calculation. A comprehensive MIMO-SL-EPSM algorithm was established in the wavenumber domain. Proof-of-principle experiments in the 0.1-THz band were performed based on a MIMO-SL prototype system. The reconstructed images for different targets with high efficiency and quality demonstrate the theoretical results and the effectiveness of the proposed algorithm.https://ieeexplore.ieee.org/document/9170503/Multiple-input-multiple-output (MIMO)phase shift migration (PSM)terahertz (THz)image reconstruction algorithm |
| spellingShingle | Guan Yang Chao Li Hang Gao Guangyou Fang Phase Shift Migration With SIMO Superposition for MIMO-Sidelooking Imaging at Terahertz Band IEEE Access Multiple-input-multiple-output (MIMO) phase shift migration (PSM) terahertz (THz) image reconstruction algorithm |
| title | Phase Shift Migration With SIMO Superposition for MIMO-Sidelooking Imaging at Terahertz Band |
| title_full | Phase Shift Migration With SIMO Superposition for MIMO-Sidelooking Imaging at Terahertz Band |
| title_fullStr | Phase Shift Migration With SIMO Superposition for MIMO-Sidelooking Imaging at Terahertz Band |
| title_full_unstemmed | Phase Shift Migration With SIMO Superposition for MIMO-Sidelooking Imaging at Terahertz Band |
| title_short | Phase Shift Migration With SIMO Superposition for MIMO-Sidelooking Imaging at Terahertz Band |
| title_sort | phase shift migration with simo superposition for mimo sidelooking imaging at terahertz band |
| topic | Multiple-input-multiple-output (MIMO) phase shift migration (PSM) terahertz (THz) image reconstruction algorithm |
| url | https://ieeexplore.ieee.org/document/9170503/ |
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