An Accurate Millimeter-Wave Imaging Algorithm for Close-Range Monostatic System
An efficient and more accurate millimeter-wave imaging algorithm, applied to a close-range monostatic personnel screening system, with consideration of dual path propagation loss, is presented in this paper. The algorithm is developed in accordance with a more rigorous physical model for the monosta...
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| Format: | Article |
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MDPI AG
2023-05-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/10/4577 |
| _version_ | 1797598449902813184 |
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| author | Xinyi Nie Chuan Lin Yang Meng Anyong Qing Jan K. Sykulski Ian D. Robertson |
| author_facet | Xinyi Nie Chuan Lin Yang Meng Anyong Qing Jan K. Sykulski Ian D. Robertson |
| author_sort | Xinyi Nie |
| collection | DOAJ |
| description | An efficient and more accurate millimeter-wave imaging algorithm, applied to a close-range monostatic personnel screening system, with consideration of dual path propagation loss, is presented in this paper. The algorithm is developed in accordance with a more rigorous physical model for the monostatic system. The physical model treats incident waves and scattered waves as spherical waves with a more rigorous amplitude term as per electromagnetic theory. As a result, the proposed method can achieve a better focusing effect for multiple targets in different range planes. Since the mathematical methods in classical algorithms, such as spherical wave decomposition and Weyl identity, cannot handle the corresponding mathematical model, the proposed algorithm is derived through the method of stationary phase (MSP). The algorithm has been validated by numerical simulations and laboratory experiments. Good performance in terms of computational efficiency and accuracy has been observed. The synthetic reconstruction results show that the proposed algorithm has significant advantages compared with the classical algorithms, and the reconstruction by using full-wave data generated by FEKO further verifies the validity of the proposed algorithm. Finally, the proposed algorithm performs as expected over real data acquired by our laboratory prototype. |
| first_indexed | 2024-03-11T03:21:24Z |
| format | Article |
| id | doaj.art-5e0001464a304104a685c1fdde3deb38 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T03:21:24Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-5e0001464a304104a685c1fdde3deb382023-11-18T03:09:24ZengMDPI AGSensors1424-82202023-05-012310457710.3390/s23104577An Accurate Millimeter-Wave Imaging Algorithm for Close-Range Monostatic SystemXinyi Nie0Chuan Lin1Yang Meng2Anyong Qing3Jan K. Sykulski4Ian D. Robertson5School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, ChinaSchool of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, ChinaSchool of Electronics and Computer Science, University of Southampton, Southampton SO17 1BJ, UKSchool of Electronic and Electrical Engineering, University of Leeds, Leeds LS2 9JT, UKAn efficient and more accurate millimeter-wave imaging algorithm, applied to a close-range monostatic personnel screening system, with consideration of dual path propagation loss, is presented in this paper. The algorithm is developed in accordance with a more rigorous physical model for the monostatic system. The physical model treats incident waves and scattered waves as spherical waves with a more rigorous amplitude term as per electromagnetic theory. As a result, the proposed method can achieve a better focusing effect for multiple targets in different range planes. Since the mathematical methods in classical algorithms, such as spherical wave decomposition and Weyl identity, cannot handle the corresponding mathematical model, the proposed algorithm is derived through the method of stationary phase (MSP). The algorithm has been validated by numerical simulations and laboratory experiments. Good performance in terms of computational efficiency and accuracy has been observed. The synthetic reconstruction results show that the proposed algorithm has significant advantages compared with the classical algorithms, and the reconstruction by using full-wave data generated by FEKO further verifies the validity of the proposed algorithm. Finally, the proposed algorithm performs as expected over real data acquired by our laboratory prototype.https://www.mdpi.com/1424-8220/23/10/4577concealed weapon detectionFourier transform techniquemethod of stationary phasemicrowave imagingnational security |
| spellingShingle | Xinyi Nie Chuan Lin Yang Meng Anyong Qing Jan K. Sykulski Ian D. Robertson An Accurate Millimeter-Wave Imaging Algorithm for Close-Range Monostatic System Sensors concealed weapon detection Fourier transform technique method of stationary phase microwave imaging national security |
| title | An Accurate Millimeter-Wave Imaging Algorithm for Close-Range Monostatic System |
| title_full | An Accurate Millimeter-Wave Imaging Algorithm for Close-Range Monostatic System |
| title_fullStr | An Accurate Millimeter-Wave Imaging Algorithm for Close-Range Monostatic System |
| title_full_unstemmed | An Accurate Millimeter-Wave Imaging Algorithm for Close-Range Monostatic System |
| title_short | An Accurate Millimeter-Wave Imaging Algorithm for Close-Range Monostatic System |
| title_sort | accurate millimeter wave imaging algorithm for close range monostatic system |
| topic | concealed weapon detection Fourier transform technique method of stationary phase microwave imaging national security |
| url | https://www.mdpi.com/1424-8220/23/10/4577 |
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