脉冲激光引信发射接收模块的电磁干扰  

Electromagnetic interference technique of transmitter and receiver modules for pulsed laser fuze

作　　者：冯颖[1] 张合[1] 张祥金[1] 

机构地区：[1]南京理工大学智能弹药技术国防重点学科实验室,南京210094

出　　处：《强激光与粒子束》2011年第1期249-254,共6页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(60908037);国家部委基金项目(9140A05070508BQ0245)

摘　　要：针对脉冲激光引信应用于中小口径常规弹药过程,由于体积严格受限而造成引信内部电磁干扰严重的问题,结合发射、接收模块工作原理,说明在其内部采取电磁干扰抑制措施的必要性。通过分析发射、接收模块电磁干扰产生机理,提出采用双重屏蔽方法抑制辐射干扰,采用线性阻抗稳定网络、缓冲网络和共差模合成扼流圈结合的多重滤波技术抑制传导干扰。对各措施作用效果进行仿真与实验,结果表明:厚度为1.55 mm钢材料对辐射干扰具有良好屏蔽效果;接收模块输出干扰信号峰峰值减小至70 mV,约为原干扰信号的1/40。这些方法大幅度降低了脉冲激光引信内部的电磁干扰,且工作稳定可靠。For the serious electromagnetic interference（EMI） problem in fuze arisen from volume constraints in the application of pulsed laser fuze to medium/small caliber conventional ammunition,the paper analyzes the necessity of adopting anti-interference measures internally with the principle of transmitter and receiver modules.Dual shielding which inhibits radiated interference（RI） and multi-filtering technique composed of linear impedance stabilization circuit,buffer network,CM-DM integrated choke,which inhibits conducted interference are proposed by analyzing EMI mechanism of transmitter module and receiver module.Simulations show that steel shield with the thickness of 1.55×10-3 m has good shielding effect on RI.Experiments prove that the peak value of receiver module interference signal reduces to 70 mV,which is only a fortieth of original noise.These strategies which greatly reduce internal EMI of pulsed laser fuze are feasible and effective.

关 键 词：脉冲激光引信 电磁干扰 电磁兼容 线性阻抗稳定网络 缓冲网络 扼流圈 

分 类 号：TJ43[兵器科学与技术—火炮、自动武器与弹药工程]