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| 等离子体球对离轴高斯波束的电磁散射 | |
| 引用本文： | 李海英,吴振森. 等离子体球对离轴高斯波束的电磁散射[J]. 电波科学学报, 2009, 24(4) |
| 作者姓名： | 李海英 吴振森 |
| 作者单位： | 西安电子科技大学理学院,陕西,西安,710071 |
| 基金项目： | 国家自然科学基金资助 |
| 摘 要： | 基于高斯波束波形因子的局域近似解和电磁场的球矢量波函数展开方法,研究了离轴高斯波束入射均匀各向异性磁化等离子体球的电磁散射特性.数值计算了波束参数和粒子参数对雷达散射截面(RCS)随散射角分布的影响.分析了改变波束束腰半径和粒子偏离波束轴距离时,RCS的分布特点.结果表明:前向散射截面与束腰半径的变化成正比关系;束腰半径的变化对RCS随散射角分布有很大影响;球粒子偏离波束轴距离的大小影响RCS极值的位置和角分布特点. |
| 关 键 词： | 高斯波束 等离子体球 矢量波函数 电磁散射 |
Electromagnetic scattering of a plasma-sphere in an off-axis Gaussian beam |
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| LI Hai-ying,WU Zhen-sen. Electromagnetic scattering of a plasma-sphere in an off-axis Gaussian beam[J]. Chinese Journal of Radio Science, 2009, 24(4) | |
| Authors: | LI Hai-ying WU Zhen-sen |
| Abstract: | Based on localized approximation to Gaussian beam coefficients and expansions of electromagnetic wave by spherical vector wave functions,scattering of a plasma-sphere illustrated by an off-axis Gaussian beam is provided.The effects of beam parameters and particle parameters on the variations of radar cross section(RCS) with scattering angles are analyzed.It is revealed that the forward RCS is in direction proportion to the waist radius of the incident Gaussian beam,and the waist radius has an effect on the ... |
| Keywords: | Gaussian beam plasma-sphere spherical vector wave functions electromagnetic scattering |
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