摘要
本文首次用直线法分析计算了电大尺寸波导中本征模的截止波数及场分布函数。由此求出的直圆管RCS分布曲线,与已知的计算和测试曲线在主要关心的角度范围内吻合很好。在此基础上依据耦合波理论求得本征模在弯波导段中的传输参量,最后由Stratton—Chu积分求得S弯管的后向散射场。计算及其与测试结果的比较表明,本文方法省时、简便且有较高精度,是计算圆截面S弯管雷达散射截面的一种有效方法。
This paper originally calculated the cut-oil wave numbers and field functions of the eigen-modes in electrically large—size waveguides by line method. The resultant radar cross section (RCS) curves of a straight circular waveguide fit the known results very well in mainly concerned extent. On the base of line method analysis, the transmission matrix of eigin—modes in curved waveguide segments is derived by means of coupling wave theory. Then the RCS of S—shape curved circular waveguides is deduced from Stratton—Chu integral. Comparison between the calculated and measured results shows that the method developed in this paper is a convenient, accurate and therefore an effective method.
出处
《微波学报》
CSCD
北大核心
1992年第4期33-42,共10页
Journal of Microwaves
关键词
直线法
圆截面
雷达散射截面
electromagnetic scattering, radar cross section, line method, coupling wavetheory,curved waveguide
