小口径激光近炸引信的抗干扰方法  

Anti-interference Methods for Small-sized Laser Proximity Fuse

作　　者：蔡克荣[1] 邓甲昊[1] 王克勇[1] 

机构地区：[1]北京理工大学机电工程与控制国家级重点实验室,北京100081

出　　处：《光电工程》2011年第7期36-41,共6页Opto-Electronic Engineering

基　　金：国防科技重点实验室基金(9140C3601130802)资助项目

摘　　要：相比现有中大口径弹药所配的激光近炸引信,小口径激光近炸引信受体积小的限制,系统功耗也须控制在更小范围,面临更严重的干扰问题。分析了影响系统稳定工作和定距性能的各种干扰源,包括发射模块辐射干扰、电源抖动干扰和假目标干扰,从而在电路设计、PCB制板、光学系统设计及程序设计等方面采取了一系列抗干扰技术措施。以小口径榴弹为依托研制了原型样机,并成功进行了靶试。测试和实验表明,系统功耗低,工作电流小于90mA,对垂直灰铁目标板作用距离大于5m。静态推靶实验和高过载条件下的靶试结果表明,该样机能够有效抵御弹道中各种干扰并可靠作用。A small-sized laser proximity fuse based on CPLD was designed for some small-caliber ammunitions, the common anti-interference methods used for medium-caliber and large-caliber ammunitions will not be suitable, due to the limited space and power. Analyzed the interferences of a small-sized laser proximity fuse, the major ones are： （a） the electromagnetic radiation of laser transmitter module; （b） the unstable power supple disturbs all circuit modules; （c） false targets like tree branch. Kinds of technical measures are adopted in circuit design, PCB design, optical system design, and programming to reduce their influences to ensure the necessary stability, reliability and precision. Using small-caliber ammunition as a base to develop prototyping and conduct targeting experiments successfully. The test experiments show that the power consumption is low and it can detect vertical test board （gray iron） at 5 m far away with no more than 90 mA current （25 V DC）. The test results in high overload conditions indicate that the prototyping can work normally and steadily in the whole trajectory.

关 键 词：抗干扰方法 光学系统 信号处理 激光近炸引信 

分 类 号：TJ439.2[兵器科学与技术—火炮、自动武器与弹药工程]