CAJ | 학술논문

针对线性调频引信抗噪声干扰能力比较差的问题，提出了基于自适应陷波器的噪声调频干扰抑制方法。该方法根据线性调频引信差频信号的单频特性，将自适应陷波器应用到线性调频引信中，对噪声调频干扰进行抑制。通过自适应调整陷波器的权值，使陷波器在差频信号的频率点具有陷波特性，从而达到噪声调频干扰抑制的目的。仿真结果表明：SJB=-10 dB时，仍然能达到很好的噪声调频干扰抑制效果。
침대선성조빈인신항조성간우능력비교차적문제，제출료기우자괄응함파기적조성조빈간우억제방법。해방법근거선성조빈인신차빈신호적단빈특성，장자괄응함파기응용도선성조빈인신중，대조성조빈간우진행억제。통과자괄응조정함파기적권치，사함파기재차빈신호적빈솔점구유함파특성，종이체도조성조빈간우억제적목적。방진결과표명：SJB=-10 dB시，잉연능체도흔호적조성조빈간우억제효과。
Aiming at the problem that linear frequency-modulated fuze’s ability of anti-noise interference was poor,the method of noise FM interference suppression based on adaptive notch filter was presented.According to the characteristic that the difference frequency signal of linear frequency-modulated fuze was monochromatic, an adaptive notch filter was adopted to suppress FM interference noise in linear frequency-modulated fuze. Through adj usting notch filter’s weights,the notch filter has the notch characteristics in difference frequency signal's frequency,then noise FM interference was suppressed.The simulation results showed that when SJR=-10dB,FM interference noise could be still suppressed effectively.