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
乔乃轩 1秦栋泽 1盛鹏 2苏建利3
作者信息
- 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
- 折叠
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 23.4dB和 8.9dB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.
Abstract
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/HFSSKey words
laser fuze/electromagnetic shielding/cross-correlation filtering/FPGA/signal filtering/HFSS引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据