CAJ | 학술논문

为了提高通信对抗系统对干扰信号的抑制能力,提出采用主接收天线为对数周期天线、辅助天线为全向天线的自适应旁瓣对消方法,推导出了无互耦条件下旁瓣对消后输出信号信干比的解析表达式,为辅助天线增益的选取提供了理论依据,计算机仿真结果证实了该方法对干扰信号的抑制能力,提高了通信对抗系统的侦察能力.
위료제고통신대항계통대간우신호적억제능력,제출채용주접수천선위대수주기천선、보조천선위전향천선적자괄응방판대소방법,추도출료무호우조건하방판대소후수출신호신간비적해석표체식,위보조천선증익적선취제공료이론의거,계산궤방진결과증실료해방법대간우신호적억제능력,제고료통신대항계통적정찰능력.
In order to improve the inhibiting ability of communication countermeasure system to the interference signal,a method of adaptive side?lobe cancellation is proposed in the paper,in which the main receiving antenna is adopted as the log periodic antenna,and the auxiliary antenna as omni?directional antenna. Without considering the effects of mutual coupling,the analytic expressions for signal?interference?ratio of output signals after side?lobe cancellation are derived,which can serve as a useful theoretical base for selection of auxiliary antennas gain. The computer simulation the results confirm the inhibiting ability of method to suppress any jamming signal. The method improved the detection capability of communication countermeasure system.