Ka Band Holographic Imaging System Based on Linear Frequency Modulation Radar
Millimeter wave (MMW) technology is expanding rapidly into security screening for dangerous items concealed under clothing. It uses safe non-ionizing radiation and penetrates clothing well. We present a new planar system at Ka band for the three-dimensional simultaneous imaging of both sides of an i...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-11-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/22/6527 |
| _version_ | 1797547849058091008 |
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| author | Yang Meng Chuan Lin Jiefeng Zang Anyong Qing Natalia K. Nikolova |
| author_facet | Yang Meng Chuan Lin Jiefeng Zang Anyong Qing Natalia K. Nikolova |
| author_sort | Yang Meng |
| collection | DOAJ |
| description | Millimeter wave (MMW) technology is expanding rapidly into security screening for dangerous items concealed under clothing. It uses safe non-ionizing radiation and penetrates clothing well. We present a new planar system at Ka band for the three-dimensional simultaneous imaging of both sides of an inspected person where the images are produced in real time by a recently proposed generalized holographic reconstruction algorithm. Low-cost linear frequency modulation (LFM) radar technology is used along with a simple but efficient method for system calibration. Experimental characterization of the spatial resolution and the sensitivity of the system prototype has been carried out. It is established that the achieved spatial resolution is 6 mm or better if the item is not obscured by clothing and it may deteriorate to 7 mm depending on the clothing hiding the item. The spatial sensitivity is confirmed to be at least 2 mm. |
| first_indexed | 2024-03-10T14:51:08Z |
| format | Article |
| id | doaj.art-bb49ecb96e6348418179de33312bd308 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T14:51:08Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-bb49ecb96e6348418179de33312bd3082023-11-20T21:01:56ZengMDPI AGSensors1424-82202020-11-012022652710.3390/s20226527Ka Band Holographic Imaging System Based on Linear Frequency Modulation RadarYang Meng0Chuan Lin1Jiefeng Zang2Anyong Qing3Natalia K. Nikolova4School of Physics, University of Electronic Science and Technology of China, Chengdu 611731, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, ChinaSchool of Physics, University of Electronic Science and Technology of China, Chengdu 611731, ChinaDepartment of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4K1, CanadaMillimeter wave (MMW) technology is expanding rapidly into security screening for dangerous items concealed under clothing. It uses safe non-ionizing radiation and penetrates clothing well. We present a new planar system at Ka band for the three-dimensional simultaneous imaging of both sides of an inspected person where the images are produced in real time by a recently proposed generalized holographic reconstruction algorithm. Low-cost linear frequency modulation (LFM) radar technology is used along with a simple but efficient method for system calibration. Experimental characterization of the spatial resolution and the sensitivity of the system prototype has been carried out. It is established that the achieved spatial resolution is 6 mm or better if the item is not obscured by clothing and it may deteriorate to 7 mm depending on the clothing hiding the item. The spatial sensitivity is confirmed to be at least 2 mm.https://www.mdpi.com/1424-8220/20/22/6527holographic imaginglinear frequency modulationmillimeter wavesecurity check |
| spellingShingle | Yang Meng Chuan Lin Jiefeng Zang Anyong Qing Natalia K. Nikolova Ka Band Holographic Imaging System Based on Linear Frequency Modulation Radar Sensors holographic imaging linear frequency modulation millimeter wave security check |
| title | Ka Band Holographic Imaging System Based on Linear Frequency Modulation Radar |
| title_full | Ka Band Holographic Imaging System Based on Linear Frequency Modulation Radar |
| title_fullStr | Ka Band Holographic Imaging System Based on Linear Frequency Modulation Radar |
| title_full_unstemmed | Ka Band Holographic Imaging System Based on Linear Frequency Modulation Radar |
| title_short | Ka Band Holographic Imaging System Based on Linear Frequency Modulation Radar |
| title_sort | ka band holographic imaging system based on linear frequency modulation radar |
| topic | holographic imaging linear frequency modulation millimeter wave security check |
| url | https://www.mdpi.com/1424-8220/20/22/6527 |
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