激光引信信号处理器屏蔽与互相关组合滤波技术  

Laser Fuze Signal Processor Shielding and Cross-correlation Combined Filtering Technology

作　　者：乔乃轩 秦栋泽[1] 盛鹏 苏建利 QIAO Naixuan;QIN Dongze;SHENG Peng;SU Jianli(School of Mechanical and Electrical Engineering,Central North University,Taiyuan 030051,China;Nanyang North Hongyu Electromechanical Manufacturing Co.,Ltd.,Nanyang 473000,China;Beijing Institute of Astronautical Systems Engineering,Beijing 100076,China)

机构地区：[1]中北大学机电工程学院,山西太原030051 [2]南阳北方红宇机电制造有限公司,河南南阳473000 [3]北京宇航系统工程研究所,北京100076

出　　处：《探测与控制学报》2024年第2期60-67,共8页Journal of Detection & Control

摘　　要：针对激光引信内部高压源的干扰以及激光引信定距目标回波信号信噪比低的问题,基于激光引信信号处理器研究了屏蔽壳体与互相关滤波技术结合抗干扰方法。该方法首先对带孔的屏蔽壳体与互相关滤波算法进行设计,通过其所受到的电磁干扰可以近似模拟干扰平面波,使用不同孔、材料的屏蔽壳体与互相关组合抗干扰。使用HFSS与ModelSim仿真得到滤波结果,双孔铜制屏蔽壳体与互相关结合滤波提升信噪比约为33 dB,双孔屏蔽壳体与互相关单独滤波提升信噪比分别为23.4 dB和8.9 dB且大于其他组合。结果表明,双孔铜制屏蔽与数字滤波结合的方法可以提升激光引信信号处理器的抗干扰能力。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.

关 键 词：激光引信 电磁屏蔽 互相关滤波 FPGA 信号滤波 HFSS 

分 类 号：TJ434.2[兵器科学与技术—火炮、自动武器与弹药工程]