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| 等离子体羽流的低频RCS数值分析 | |
| 引用本文： | 刘波,时家明,金林.等离子体羽流的低频RCS数值分析[J].系统工程与电子技术,2007,29(1):41-44. |
| 作者姓名： | 刘波 时家明 金林 |
| 作者单位： | 1. 空军装备研究院雷达与电子对抗研究所,北京,100085;南京电子技术研究所,江苏,南京,210013 2. 解放军电子工程学院,安徽,合肥,230037 3. 南京电子技术研究所,江苏,南京,210013 |
| 摘 要： | 探讨综合利用时域有限差分法(FDTD)和热力学原理计算等离子体羽流的电磁散射特性。以化学平衡流动为前提,采用最小自由能方法确定火箭发动机喷口处的电子密度;验证了基于辅助差分方程(ADE法)和Z变换方法对羽流电磁特性进行时域建模的正确性。弹道导弹(火箭)羽流雷达截面(RCS)的计算实例表明现有雷达,特别是低频段雷达有可能利用羽流的散射实现对主动段导弹的探测。 |
| 关 键 词： | 时域有限差分法 电磁散射 等离子体 羽流 雷达截面 |
| 文章编号： | 1001-506X(2007)01-0041-04 |
| 修稿时间： | 2006年2月21日 |
RCS simulation of plasma plume of missile |
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| LIU Bo,SHI Jia-ming,JIN Lin.RCS simulation of plasma plume of missile[J].System Engineering and Electronics,2007,29(1):41-44. | |
| Authors: | LIU Bo SHI Jia-ming JIN Lin |
| Abstract: | How to simulate the electromagnetic scattering of the missile plume plasma in HF and VHF band using the finite-difference time-domain(FDTD) algorithm and energetics theory is proposed.Based on the chemical equilibrium flow assumption,the electron density at the exit of the nozzle is determined using the minimum free energy rule.A numerical model based on auxiliary difference equation(ADE) is derived to simulate the plasma in the time domain and the calculating results are compared with that using Z transform.The simulation results of RCS of the missile plume demonstrate the feasibility of detecting the missile plume using radar system,especially low frequency ones. |
| Keywords: | finite-difference time-domain electromagnetic scattering plasma plume radar cross section |
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