自适应陷波器在连续波引信噪声抑制中的应用  

Application of Adaptive Notch Filter in Continuous-wave Fuze Noise Suppression

作　　者：路翠华[1] 李国林[1] 粘朋雷[1] 

机构地区：[1]海军航空工程学院七系,山东烟台264001

出　　处：《电讯技术》2011年第1期23-26,共4页Telecommunication Engineering

摘　　要：为提高连续波多普勒无线电引信在噪声干扰环境中的工作可靠性,分析了噪声干扰对连续波多普勒无线电引信的影响。根据连续波引信信号的单频率特点,将单频率自适应陷波器应用到引信中,用来对引信通带内的噪声干扰进行抑制,分析了噪声抑制原理,并对噪声抑制效果进行了仿真。仿真结果表明,信噪比为-10 dB时,利用单频率自适应陷波器仍然可以达到很好的噪声抑制效果。In order to improve continuous-wave（CW） fuze＇s reliability under the circumstance of noise interference, the effect of noise interference on CW Doppler fuze is analysed. According to the character that the signal of CW fuze is monochromatic, monochromatic adaptive notch filter is used to suppress noise. The principle of anti-noise is analysed, and the effect of anti-noise is simulated. The simulation results show that when the SNR （Signal to Noise Ratio） is - 10 dB,noise can be still suppressed effectively.

关 键 词：连续波多普勒引信 自适应陷波器 噪声抑制 

分 类 号：TN911.4[电子电信—通信与信息系统] TJ43[电子电信—信息与通信工程]