Modelling of Electromagnetic Scattering by a Hypersonic Cone-Like Body in Near Space
A numerical procedure for analysis of electromagnetic scattering by a hypersonic cone-like body flying in the near space is presented. First, the fluid dynamics equation is numerically solved to obtain the electron density, colliding frequency, and the air temperature around the body. They are used...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2017/3049532 |
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| author | Ji-Wei Qian Hai-Li Zhang Ming-Yao Xia |
| author_facet | Ji-Wei Qian Hai-Li Zhang Ming-Yao Xia |
| author_sort | Ji-Wei Qian |
| collection | DOAJ |
| description | A numerical procedure for analysis of electromagnetic scattering by a hypersonic cone-like body flying in the near space is presented. First, the fluid dynamics equation is numerically solved to obtain the electron density, colliding frequency, and the air temperature around the body. They are used to calculate the complex relative dielectric constants of the plasma sheath. Then the volume-surface integral equation method is adopted to analyze the scattering properties of the body plus the plasma sheath. The Backscattering Radar Cross-Sections (BRCS) for the body flying at different speeds, attack angles, and elevations are examined. Numerical results show that the BRCS at a frequency higher than 300 MHz is only slightly affected if the speed is smaller than 7 Mach. The BRCS at 1 GHz would be significantly reduced if the speed is greater than 7 Mach and is continuously increased, which can be attributed to the absorption by the lossy plasma sheath. Typically, the BRCS is influenced by 5~10 dBm for a change of attack angle within 0~15 degrees, or for a change of elevation within 30~70 km above the ground. |
| format | Article |
| id | doaj-art-12374ca721ab4635be35854b5b3d582e |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-12374ca721ab4635be35854b5b3d582e2025-02-03T01:07:50ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772017-01-01201710.1155/2017/30495323049532Modelling of Electromagnetic Scattering by a Hypersonic Cone-Like Body in Near SpaceJi-Wei Qian0Hai-Li Zhang1Ming-Yao Xia2School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, ChinaSchool of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 611731, ChinaSchool of Electronics Engineering and Computer Science, Peking University, Beijing 100871, ChinaA numerical procedure for analysis of electromagnetic scattering by a hypersonic cone-like body flying in the near space is presented. First, the fluid dynamics equation is numerically solved to obtain the electron density, colliding frequency, and the air temperature around the body. They are used to calculate the complex relative dielectric constants of the plasma sheath. Then the volume-surface integral equation method is adopted to analyze the scattering properties of the body plus the plasma sheath. The Backscattering Radar Cross-Sections (BRCS) for the body flying at different speeds, attack angles, and elevations are examined. Numerical results show that the BRCS at a frequency higher than 300 MHz is only slightly affected if the speed is smaller than 7 Mach. The BRCS at 1 GHz would be significantly reduced if the speed is greater than 7 Mach and is continuously increased, which can be attributed to the absorption by the lossy plasma sheath. Typically, the BRCS is influenced by 5~10 dBm for a change of attack angle within 0~15 degrees, or for a change of elevation within 30~70 km above the ground.http://dx.doi.org/10.1155/2017/3049532 |
| spellingShingle | Ji-Wei Qian Hai-Li Zhang Ming-Yao Xia Modelling of Electromagnetic Scattering by a Hypersonic Cone-Like Body in Near Space International Journal of Antennas and Propagation |
| title | Modelling of Electromagnetic Scattering by a Hypersonic Cone-Like Body in Near Space |
| title_full | Modelling of Electromagnetic Scattering by a Hypersonic Cone-Like Body in Near Space |
| title_fullStr | Modelling of Electromagnetic Scattering by a Hypersonic Cone-Like Body in Near Space |
| title_full_unstemmed | Modelling of Electromagnetic Scattering by a Hypersonic Cone-Like Body in Near Space |
| title_short | Modelling of Electromagnetic Scattering by a Hypersonic Cone-Like Body in Near Space |
| title_sort | modelling of electromagnetic scattering by a hypersonic cone like body in near space |
| url | http://dx.doi.org/10.1155/2017/3049532 |
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