小型化脉冲激光周向四象限近程方位探测技术  

Miniaturized Pulsed Laser Circumferential Four-quadrant Proximity Azimuth Detection Technology

作　　者：冯涛[1] 张祥金[1] 姚宗辰 Feng Tao;Zhang Xiangjin;Yao Zongchen(Nanjing University of Science and Technology,Nanjing,Jiangsu 210094,China)

机构地区：[1]南京理工大学

出　　处：《应用激光》2019年第2期322-327,共6页Applied Laser

摘　　要：脉冲激光探测系统应用于常规弹药过程中,单光束前向探测结构无法满足周向定位需求。同时,系统结构要求尽量简单,故传统的光束布局方式无法直接应用。为此,提出了一种多光束大视场脉冲激光周向探测方案。根据激光收发系统光场特性与探测需求,基于非球面光学设计理论,设计出激光整形扩束与大视场接收的阵列透镜光学系统,并设计了窄脉冲大电流脉冲激光驱动电路和高灵敏度高信噪比光电放大电路。提出基于FPGA目标方位判别和抗干扰策略,有效提高了系统抗干扰能力,建立了弹目交会模型,并进行了目标捕获率分析。加工制作了原理样机并进行静态实验,结果表明,样机能有效探测不小于5m的近程目标,实现常规弹药激光近炸引信360°大视场周向探测。When the pulsed laser detection system is applied to the conventional ammunition process, the single-beam forward detection structure cannot meet the circumferential positioning requirements. At the same lime, the system structure requirements are as simple as possible,so the traditional beam layout cannot be directly applied. Therefore,a multi-beam large field of view pulse laser circumferential detection scheme is proposed. According to the optical field characteristics and detection requirements of the laser transceiver system, based on the aspherical optical design theory, the array lens optical system of laser shaping expansion and large field of view is designed,and the narrow pulse high current pulse laser driving circuit, high sensitivity and high signal to noise ratio photoelectric amplifying circuit are designed. Based on the FPGA target azimuth discrimination and anti-interference strategy, the anti-interference ability of the system is effectively improved. The projectile rendezvous is established, and the model is also analyzed for target capture rate. The prototype machine is processed and static experiments are carried out. The results show that the prototype can effectively detect the short-range targets of not less than 5 m, and realize the 360 degree large-field circumferential detection of conventional ammunition laser proximity fuze.

关 键 词：激光近炸引信 周向探测 四象限 FPGA 

分 类 号：TN249[电子电信—物理电子学]