Generalized Radar Range Equation Applied to the Whole Field Region
Most terahertz (THz) radar systems can only work in the near-field region, because the THz source power is limited and the size of the target scattered near field is up to tens of kilometers. Such conditions will result in the conventional radar range equation being unsuitable. Therefore, the near-f...
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| Format: | Article |
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MDPI AG
2022-06-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/12/4608 |
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| author | Luyin Xiao Yongjun Xie Shida Gao Junbao Li Peiyu Wu |
| author_facet | Luyin Xiao Yongjun Xie Shida Gao Junbao Li Peiyu Wu |
| author_sort | Luyin Xiao |
| collection | DOAJ |
| description | Most terahertz (THz) radar systems can only work in the near-field region, because the THz source power is limited and the size of the target scattered near field is up to tens of kilometers. Such conditions will result in the conventional radar range equation being unsuitable. Therefore, the near-field radar cross section (RCS) formula is given according to the numerical simulation on different targets. By modifying the parameters in the near field, including the gain of radar antennas and the RCS of targets, the generalized radar range equation is proposed. The THz radar working efficiency in the whole range and the simulation of the near-field RCS simulation model were employed to validate its effectiveness. Through comparison with the radar range equation, it can be concluded that the calculation results of the proposed equation are smaller in the near field, and the outcomes in the far field are identical. The proposed generalized radar range equation can be applied to the whole radiation area including the near field and the far field. Furthermore, more complicated real targets are calculated according to the generalized radar range equation and it can be extended from the submillimeter wave band to a much wider band range. Finally, the near-field radar theory is established, which shows its potential application to the radar cross section estimation in the extremely high frequency and fine design of THz radar systems. |
| first_indexed | 2024-03-09T22:31:14Z |
| format | Article |
| id | doaj.art-c3150bf67eb141e5a5a883d95e6bb773 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T22:31:14Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-c3150bf67eb141e5a5a883d95e6bb7732023-11-23T18:56:03ZengMDPI AGSensors1424-82202022-06-012212460810.3390/s22124608Generalized Radar Range Equation Applied to the Whole Field RegionLuyin Xiao0Yongjun Xie1Shida Gao2Junbao Li3Peiyu Wu4School of Electronic and Information Engineering, Beihang University, Beijing 100191, ChinaSchool of Electronic and Information Engineering, Beihang University, Beijing 100191, ChinaSchool of Electronic and Information Engineering, Beihang University, Beijing 100191, ChinaSchool of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150080, ChinaSchool of Electronic and Information Engineering, Beihang University, Beijing 100191, ChinaMost terahertz (THz) radar systems can only work in the near-field region, because the THz source power is limited and the size of the target scattered near field is up to tens of kilometers. Such conditions will result in the conventional radar range equation being unsuitable. Therefore, the near-field radar cross section (RCS) formula is given according to the numerical simulation on different targets. By modifying the parameters in the near field, including the gain of radar antennas and the RCS of targets, the generalized radar range equation is proposed. The THz radar working efficiency in the whole range and the simulation of the near-field RCS simulation model were employed to validate its effectiveness. Through comparison with the radar range equation, it can be concluded that the calculation results of the proposed equation are smaller in the near field, and the outcomes in the far field are identical. The proposed generalized radar range equation can be applied to the whole radiation area including the near field and the far field. Furthermore, more complicated real targets are calculated according to the generalized radar range equation and it can be extended from the submillimeter wave band to a much wider band range. Finally, the near-field radar theory is established, which shows its potential application to the radar cross section estimation in the extremely high frequency and fine design of THz radar systems.https://www.mdpi.com/1424-8220/22/12/4608THz radar systemgeneralized radar range equationnear-field RCSnear-field radar theory |
| spellingShingle | Luyin Xiao Yongjun Xie Shida Gao Junbao Li Peiyu Wu Generalized Radar Range Equation Applied to the Whole Field Region Sensors THz radar system generalized radar range equation near-field RCS near-field radar theory |
| title | Generalized Radar Range Equation Applied to the Whole Field Region |
| title_full | Generalized Radar Range Equation Applied to the Whole Field Region |
| title_fullStr | Generalized Radar Range Equation Applied to the Whole Field Region |
| title_full_unstemmed | Generalized Radar Range Equation Applied to the Whole Field Region |
| title_short | Generalized Radar Range Equation Applied to the Whole Field Region |
| title_sort | generalized radar range equation applied to the whole field region |
| topic | THz radar system generalized radar range equation near-field RCS near-field radar theory |
| url | https://www.mdpi.com/1424-8220/22/12/4608 |
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