脉冲多普勒引信抗有源噪声干扰性能研究

为提高脉冲多普勒引信抗有源噪声干扰性能，定量研究有源噪声干扰对其作用机理，以处理增益为表征参量，基于功率谱定量研究了脉冲多普勒引信的抗有源噪声干扰性能。理论推导了在射频噪声、噪声调幅和噪声调频干扰作用下脉冲多普勒引信从接收回波至相关检测这一过程的输入、输出信干比和处理增益，获得了影响脉冲多普勒引信抗有源噪声干扰能力的信号特征参数，并进行了仿真验证。定量分析与仿真结果表明：脉冲多普勒引信具有较强的抗有源噪声干扰能力，抗有源噪声干扰能力主要决定于脉冲占空比与多普勒滤波器带宽。

Anti-active Noise Jamming Performance of Pulse Doppler Fuze

The anti-active noise jamming performance of pulse Doppler (PD) fuze is quantitatively studied based on the characterization parameters of processing gain and power spectrum in order to reveal the jamming mechanism and improve the anti-jamming performance of PD fuze. The input signal-to-jamming ratio, output signal-to-jamming ratio and processing gain of the procedure from the echo reception to the correlation detection under the radio frequency noise jamming, noise amplitude modulation jamming and noise frequency modulation jamming are deduced. The signal feature parameters affecting the anti-active noise jamming performance of PD fuze are obtained, and the simulation verification is carried out. The quantitative analysis and simulation results indicate that the PD fuze has the strong performance of anti-active noise jamming, and its performance of anti-active noise jamming is mainly determined by the pulse duty cycle and the bandwidth of Doppler filter.