Analysis of the influence of sheath positions,flight parameters and incident wave parameters on the wave propagation in plasma sheath  

作　　者：Qifan ZHANG Yiping HAN Qinlu DONG Chang DONG 张启凡;韩一平;董秦鲁;董畅(School of Physics and Optoelectronic Engineering,Xidian University,Xi'an 710071,People's Republic of China)

机构地区：[1]School of Physics and Optoelectronic Engineering,Xidian University,Xi'an 710071,People's Republic of China

出　　处：《Plasma Science and Technology》2022年第3期33-40,共8页等离子体科学和技术（英文版）

摘　　要：The plasma sheath covering hypersonic vehicles has a significant effect on the propagation of electromagnetic waves.Based on the calculation of the flow field of a conical cylindrical,this work studies the propagation of electromagnetic waves in plasma sheath at L-band and Ku-band,and discusses the propagation characteristics in the head,side and tail of the sheath.The dielectric properties of plasma sheath are related to flight speed and altitude.A flight condition corresponds to a unique distribution of dielectric properties.For the conical cylindrical,the results show that flight speed is generally negatively correlated with the transmissivity of the plasma sheath.The reflection characteristics of electromagnetic waves at the L-band and Kuband when obliquely incident to the plasma sheath show a downward trend.When the frequency is increased to Ku-band,the propagation characteristics of electromagnetic waves in the plasma sheath are related to the position of the sheath.

关 键 词：plasma sheath reflection and transmission flow field 

分 类 号：V41[航空宇航科学与技术—航空宇航推进理论与工程]