| 自由电子密度对等离子体隐身的影响 |
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| 引用本文： | 詹康生,胡萍,刘少斌.自由电子密度对等离子体隐身的影响[J].石河子大学学报,2005,23(4):405-408. |
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| 作者姓名： | 詹康生 胡萍 刘少斌 |
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| 作者单位： | [1]广州大学物理与电子工程学院,广东广州510006 [2]南昌大学数理学院,江西南昌330029 [3]南昌大学基础部,江西南昌330029 |
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| 摘 要： | 本文研究了不均匀非磁化等离子体片的自由电子密度与目标隐身的关系,给出不同等离子体自由电子密度分布时,对不同频段的雷达电磁波的衰减.研究发现,等离子体的自由电子密度应与雷达频率相关.雷达在高频、甚高频等低频段工作时,等离子体隐身的效果不理想;雷达工作在L、S、C、X等高频频段时,等离子体隐身效果显著.此外,我们发现对不同的雷达频率,等离子体存在一个最佳碰撞频率使入射电磁波衰减最大,该频率接近入射电磁波的频率.
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| 关 键 词： | 等离子体隐身 雷达散射截面 不均匀等离子体 电磁波 |
| 文章编号： | 1007-7383(2005)04-0405-04 |
| 收稿时间： | 2005-07-30 |
| 修稿时间： | 2005年7月30日 |
Research on the Relation between the Free Electron Density in a Unmagnetized Plasma and the Stealth of Target |
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| ZHAN Kang-sheng, HU Ping, LIU Shao-bin.Research on the Relation between the Free Electron Density in a Unmagnetized Plasma and the Stealth of Target[J].Journal of Shihezi University(Natural Science),2005,23(4):405-408. |
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| Authors: | ZHAN Kang-sheng HU Ping LIU Shao-bin |
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| Institution: | 1 Scool of Physics and Electronic Engineering, Guangzhou University, Guangzhou, Guangdong 510006, China ; 2 Science College, Nanchang University Nanchang,Jiangxi 330029, China; 3 Department of Basic Courses Nanchang University, Nanchang,Jiangxi 330029,China |
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| Abstract: | The relation between the free electron density in a unmagnetized plasma and the stealth of target is investigated in this paper.For different plasma-density profiles,the reduction of electromagnetic waves with different frequencies is given.The results illustrate that the free electron density must relate to the electromagnetic wave frequency.The plasma system isn't successful when the EM wave frequency is low.And it is efficient when the EM wave frequency is large. Meanwhile,we discover that there is a best collision frequency for a given EM wave frequency.The absorption reaches a peak at the collision frequency.The collision frequency is near the EM wave frequency. |
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| Keywords: | plasma stealth RCS inhomogeneous plasma electromagnetic waves |
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