摘要
高超声速飞行器在高速飞行中,与周围空气摩擦产生高温使空气电离,进而产生一种强反射、强衰减并且高度不均匀的等离子体壳套,它会包覆于飞行器表面,影响与地面的通信,造成通信"黑障"现象的发生。利用有限元-边界积分[1]方法对等离子体包覆下的微带天线辐射特性进行了仿真,计算了微带天线在包覆等离子体后辐射特性变化。并且证明了通过对等离子体壳套强加磁场,将其磁化,能打开通信窗口,使微带天线正常工作,从而验证了"磁窗天线"[2]方案解决"黑障"现象的可行性。
Aircrafts of high ultrasonic velocity rubbing with surrounding air generate high temperature, which will make air ionize and a plasm shell with strong reflection, strong attenuation and uneven height. The shell will cover the surface of aircraft, influence the communication between the aircraft and ground, cause ＂black barrier＂ phenomenon of communication. This paper uses finite element-boundary integral method to simulate the radiation feature of microstrip antenna wrapped by plasm,calculates the radiation feature change after the microstrip antenna is wrapped with plasm, and proves：forcing magnetic field to the plasm shell and making it magnetized can open the communication window,then the microstrip antenna can operate usually,which validates the feasibility that ＂magnetism window antenna＂ method solves ＂black barrier＂ phenomenon.
出处
《舰船电子对抗》
2015年第6期89-92,共4页
Shipboard Electronic Countermeasure
关键词
等离子体
有限元-边界积分
磁窗天线
plasm
finite element-boundary integral
magnetism window antenna
