Analysis for Scattering of Plasma Sheath of Aircraft by ZT-FDTD Method in Three-dimensional Space
When space vehicles reentry atmosphere at hypersonic speed, a plasma sheath enveloping the spacecraft forms. The plasma sheath is a medium which is frequency dependent and lossy, so reflection and attenuation will happen when radio signals transport through the plasma sheath. In this paper, Finite Difference Time Domain using Z-transform method(ZTFDTD) is used to analyze the problem. At first, Maxwell equations are transformed to make the expression independent of the medium properties, thus, the same equations can be used in different frequency dependent mediums, this technology achieves the feature of code portability. Then the ZT-FDTd method is extended to the three-dimensional space, by comparing the sectional drawing of the result in 3d with that in 1D to make sure of the correctness of the simulation in 3D, and then the method is used to study the scattering characteristics of objects in different situations in 3D. Finally we compare and give the analysis of different situations.
FDTD electromagnetic wave plasma sheath
Yang Yongchang Wei Zhiyong Fang Meihua Chen Guoyun Zhang zixia
Nanjing University of Aeronautics and Astronautics, Nanjing 210016
国际会议
International Conference on Space Information Technology 2009(2009年第三届空间信息技术国际会议)
北京
英文
1-9
2009-11-26（万方平台首次上网日期，不代表论文的发表时间）