W-Band FMCW MIMO System for 3-D Imaging Based on Sparse Array
Multiple-input multiple-output (MIMO) technology is widely used in the field of security imaging. However, existing imaging systems have shortcomings such as numerous array units, high hardware costs, and low imaging resolutions. In this paper, a sparse array-based frequency modulated continuous wav...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/13/2/369 |
| _version_ | 1797344252759375872 |
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| author | Wenyuan Shao Jianmin Hu Yicai Ji Wenrui Zhang Guangyou Fang |
| author_facet | Wenyuan Shao Jianmin Hu Yicai Ji Wenrui Zhang Guangyou Fang |
| author_sort | Wenyuan Shao |
| collection | DOAJ |
| description | Multiple-input multiple-output (MIMO) technology is widely used in the field of security imaging. However, existing imaging systems have shortcomings such as numerous array units, high hardware costs, and low imaging resolutions. In this paper, a sparse array-based frequency modulated continuous wave (FMCW) millimeter wave imaging system, operating in the W-band, is presented. In order to reduce the number of transceiver units of the system and lower the hardware cost, a linear sparse array with a periodic structure was designed using the MIMO technique. The system operates at 70~80 GHz, and the high operating frequency band and 10 GHz bandwidth provide good imaging resolution. The system consists of a one-dimensional linear array, a motion control system, and hardware for signal generation and image reconstruction. The channel calibration technique was used to eliminate inherent errors. The system combines mechanical and electrical scanning, and uses FMCW signals to extract distance information. The three-dimensional (3-D) fast imaging algorithm in the wave number domain was utilized to quickly process the detection data. The 3-D imaging of the target in the near-field was obtained, with an imaging resolution of 2 mm. The imaging ability of the system was verified through simulations and experiments. |
| first_indexed | 2024-03-08T10:59:41Z |
| format | Article |
| id | doaj.art-f135027f14f84be3afeb140d36b640b7 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-08T10:59:41Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-f135027f14f84be3afeb140d36b640b72024-01-26T16:14:13ZengMDPI AGElectronics2079-92922024-01-0113236910.3390/electronics13020369W-Band FMCW MIMO System for 3-D Imaging Based on Sparse ArrayWenyuan Shao0Jianmin Hu1Yicai Ji2Wenrui Zhang3Guangyou Fang4Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, ChinaMultiple-input multiple-output (MIMO) technology is widely used in the field of security imaging. However, existing imaging systems have shortcomings such as numerous array units, high hardware costs, and low imaging resolutions. In this paper, a sparse array-based frequency modulated continuous wave (FMCW) millimeter wave imaging system, operating in the W-band, is presented. In order to reduce the number of transceiver units of the system and lower the hardware cost, a linear sparse array with a periodic structure was designed using the MIMO technique. The system operates at 70~80 GHz, and the high operating frequency band and 10 GHz bandwidth provide good imaging resolution. The system consists of a one-dimensional linear array, a motion control system, and hardware for signal generation and image reconstruction. The channel calibration technique was used to eliminate inherent errors. The system combines mechanical and electrical scanning, and uses FMCW signals to extract distance information. The three-dimensional (3-D) fast imaging algorithm in the wave number domain was utilized to quickly process the detection data. The 3-D imaging of the target in the near-field was obtained, with an imaging resolution of 2 mm. The imaging ability of the system was verified through simulations and experiments.https://www.mdpi.com/2079-9292/13/2/369multiple-input multiple-output (MIMO)frequency modulated continuous wave (FMCW)sparse linear arraythree-dimensional (3-D) imagingchannel calibration |
| spellingShingle | Wenyuan Shao Jianmin Hu Yicai Ji Wenrui Zhang Guangyou Fang W-Band FMCW MIMO System for 3-D Imaging Based on Sparse Array Electronics multiple-input multiple-output (MIMO) frequency modulated continuous wave (FMCW) sparse linear array three-dimensional (3-D) imaging channel calibration |
| title | W-Band FMCW MIMO System for 3-D Imaging Based on Sparse Array |
| title_full | W-Band FMCW MIMO System for 3-D Imaging Based on Sparse Array |
| title_fullStr | W-Band FMCW MIMO System for 3-D Imaging Based on Sparse Array |
| title_full_unstemmed | W-Band FMCW MIMO System for 3-D Imaging Based on Sparse Array |
| title_short | W-Band FMCW MIMO System for 3-D Imaging Based on Sparse Array |
| title_sort | w band fmcw mimo system for 3 d imaging based on sparse array |
| topic | multiple-input multiple-output (MIMO) frequency modulated continuous wave (FMCW) sparse linear array three-dimensional (3-D) imaging channel calibration |
| url | https://www.mdpi.com/2079-9292/13/2/369 |
| work_keys_str_mv | AT wenyuanshao wbandfmcwmimosystemfor3dimagingbasedonsparsearray AT jianminhu wbandfmcwmimosystemfor3dimagingbasedonsparsearray AT yicaiji wbandfmcwmimosystemfor3dimagingbasedonsparsearray AT wenruizhang wbandfmcwmimosystemfor3dimagingbasedonsparsearray AT guangyoufang wbandfmcwmimosystemfor3dimagingbasedonsparsearray |