摘要
将发动机进气道等效为波导结构模型，分析了进气道中喷气发动机旋转叶片对雷达回波的调制效应，这种调制效应可用目标ＲＣＳ的变化规律及调制谱表示。实践表明，喷气发动机的Ｊ．Ｅ．Ｍ效应，尽管对飞机机身散射的有用信号是个大的干扰，但调制谱对目标识别是十分有用的。
The modulating effect of radar echo wave caused by the revolvingvane is analyzed in this paper. It is expressed as a changing law of target RCS and modulation spectrum.It is made clear from experiment that J.E.M effect is a big interference to useful signal scattered by an jet aircraft body, but its modulation spectrum is advantageous for target recognition.The engine intake is equivalent as a waveguide model.
出处
《电波科学学报》
EI
CSCD
1999年第2期136-143,共8页
Chinese Journal of Radio Science
关键词
J.E.M效应
调制谱
电磁散射
RCS
喷气发动机
J.E.M effect
Modulation spectra
EM scattering
Polarized scattering matrix
RCS
Modal method
