激光引信双向驱动单发单收大视场探测技术研究

由于受系统功耗和空间的限制,常规弹药激光引信无法采取多个激光器和多个激光接收器实现多发多收,同时传统的激光大视场探测方式无法满足小型化、结构简单的需求。提出一种新型的双向驱动单发单收大视场探测方案,建立弹目交汇捕获率数学模型,分析了不同弹目距离以及不同转速下目标捕获率。并针对系统电磁干扰影响因素,采用多种方法复合屏蔽电磁信号对回波信号的干扰,加工制作了原理样机,进行了抗电磁干扰实验以及不同距离动态旋转目标探测实验,结果表明本方案能够有效屏蔽系统电磁干扰,在转速50 000 r/ min 时能保证距离为8 m 的目标可靠捕获,使大视场全向探测激光引信在常规弹药上的应用成为可能。

Research on Large FOV Single Transceiver Bidirectional-driving Detection Technology for Laser Fuze

Due to the limitations of system power consumption and space, the conventional ammunition laser fuze is unable to use a plurality of lasers and laser receivers for multi-transmitting and multi-receiving,and therefore the traditional large field-of-view (FOV) laser detection method can not meet the requirements of system miniaturization. A new large FOV single transceiver bidirectional-driving detection scheme is proposed,a mathematical model is established, and the target acquisition rates at the different projectile-target distances and the different projectile spin rates are analyzed. For the electromagnetic interference factors, a prototype is manufactured, and a variety of methods are used to shield the electro-magnetic signals. The anti-electromagnetic interference experiment and the detection experiment of targets at different distances are performed. The results show that the scheme can effectively shield the electro-magnetic interference; ensure that a target can be captured at the distance of 8 m when the spin rate of project tile is 50 000 r/ min; and make the application of laser fuze with large FOV detection capability in conventional ammunition possible.