摘要
根据末敏弹毫米波交流辐射计探测金属目标时弹目交会特点和信号处理电路特性,提出了一种基于波形诱骗的毫米波有源干扰新方法。分析并建立了辐射计探测干扰源信号时的天线温度模型,与探测地面金属目标相比,天线温度信号脉宽明显展宽,幅度保持恒定。该信号经视频放大器低频截止作用后,使输入的等幅宽时信号发生频率失真,输出具有正、负脉冲形式的波形分裂信号,其中负脉冲部分可以模拟探测地面金属目标的输出信号。实验结果验证了设计方法的正确性和有效性,为毫米波末敏弹有源干扰提供了一种可行的方法。
According to the characteristics of the encaunter between terminal-sensitive projectile and met- al target and the signal processing circuit of millimeter-wave （MMW） alternating current radiometer, a novel method of MMW active jamming based on waveform deception is proposed. An antenna temperature model for the interference source detection is analyzed and established. The antenna temperature signal has wider pulse width and constant amplitude compared with the output signal in ground metal target de- tection. Then the signal frequency is distorted by the inherent low-frequency cut-off feature of the video amplifier in the radiometer, generating the split signals of positive and negative pulse waveforms, in which the negative waveform pulse can be used to simulate the output signal in ground metal target detec- tion. The experimental results demonstrate the validity and feasibility of the proposed method, which pro- vides an approach for MMW terminal-sensitive active jamming.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2014年第1期49-54,共6页
Acta Armamentarii
基金
中国博士后科学基金项目(20100481151)
关键词
兵器科学与技术
末敏弹
有源干扰
波形诱骗
宽时信号
毫米波交流辐射计
ordnance science and technology
terminal-sensitive projectile
active jamming
waveform deception
widetime signal
millimeter-wave alternating current radiometer
