Laser Fuze Signal Processor Shielding and Cross-correlation Combined Filtering Technology
Aiming at the interference of high-voltage sources inside laser fuzes and the low signal-to-noise ratio of laser fuze fixed-distance target echo signals,this paper studied the combination of shielding shell and cross-correlation filtering technology combined with anti-interference based on laser fuze signal processor.Firstly,the shielding shell with holes and cross-correlation filtering algorithm were designed,and the interference plane wave was approximately simulated through the electromagnetic interference received,and the shielding shell and cross-correlation combination of different holes and materials were used to prevent interference.Using HFSS and ModelSim simulation to obtain filtering results,the signal-to-noise ratio of the double-hole copper shielding shell and cross-correlation combined filtering was about 33 dB,and the signal-to-noise ratio of the double-hole shielding shell and cross-correlation separate filtering was 23.4 dB and 8.9 dB,respectively,which was greater than that of other combinations.The results showed that the combination of double-hole copper shielding and digital filtering could improve the anti-interference ability of laser fuze signal processor.
NETL
NSTL
万方数据
维普
