物理学报Issue(24)：1-7,7.DOI:10.7498/aps.63.244101
热防护层覆盖弹体目标雷达散射截面的修正的等效电流近似法和图形计算电磁学法分析
Mo dified equivalent current approximation and graphical electromagnetic computing metho d of analyzing radar cross section of missile target scatterer covered with thermal protection layer
朱艳菊 1江月松 1华厚强 1张崇辉 1辛灿伟1
作者信息
- 1. 北京航空航天大学电子信息工程学院，北京 100191
- 折叠
摘要
Abstract
In this paper, we combine the modified equivalent current approximate method and graphical electromagnetic computing method to solve the electromagnetic scattering problems in the missile target covered with the thermal protective layer. The modified equivalent current approximate method is used to calculate the lossy dielectric and combining graphical electromagnetic method, and using a computer display technology, blanking and occlusion, a three-dimensional surface is projected on a computer screen, and the pixels are calculated. The calculation in three-dimensional space is converted into the calculation in two-dimensional space, thereby greatly reducing the computation time and complexity. The results show that when the incident frequency is low, the thickness of the thermal protection layer does not affect the radar cross section value. When the frequency is increased with the thickness of the thermal protection layer , the radar cross section value continuously decreases, which indicates that the thermal barrier coating is a lossy medium: the bigger the imaginary part of the dielectric, the stronger the ability to consume the energy is and the more obvious the change of missile radar cross section is. When the thermal protective layer has pores, the higher the porosity, the greater the value of the radar cross section is; when the porosity is zero, the value of the radar cross section is minimal; when the porosity is the same, the thinner the thermal protection layer, the bigger the radar cross section is. When the projectile phenomenon occurs, it does not affect the radar cross section.关键词
热防护层/雷达散射截面/修正的等效电流法/电磁散射Key words
thermal protection layer/radar cross section/the modified equivalent current approximation/electromagnetic scattering引用本文复制引用
朱艳菊,江月松,华厚强,张崇辉,辛灿伟..热防护层覆盖弹体目标雷达散射截面的修正的等效电流近似法和图形计算电磁学法分析[J].物理学报,2014,(24):1-7,7.
