大视场激光引信目标识别方法研究

Target identifying of large visual angle to the laser fuse

介绍在采用发射扫描、四路大视场接收组合实现对有限尺寸目标的激光大视场探测的方案下,通过采用一片可编程逻辑门阵列器件实现大视场激光引信目标识别信息处理系统的功能。利用可编程逻辑门阵列器件内部相对独立的模块进行并行处理,对扫描的激光脉冲信号进行方位计数、目标距离计数、回波连续性计数,实现了对探测区目标的距离判别、方位判别、尺寸判别。并通过软件仿真该方法对上述功能进行验证,在仿真中可编程逻辑门阵列器件能较好地完成大视场下对有限尺寸目标的识别,对发现引炸距离内的目标实时给出引炸信号,通过方位判别和尺寸判别提高了激光引信抗云雾干扰性能、改善引战配合效率,这表明该方法非常适用于面空导弹和反辐射导弹。

For the targets of limited size,the method of FPGA （field programmable gate array） based information system is proposed for target identifying.The coupling scan of transmission and four branch receiver are used to solve all aspect detecting ,target is identified through four branch information. In the design, range counter, orientation counter, dimension counter are realized. So the target is identified. Through simulating ,experimental result shows the effectiveness.The method can automatically identify conditions of missile-target meeting, advance the anti-fog interference capability of laser fuse,and improve attacking efficiency. The method is adapted to the ai-to-air missile and anti-radialization missile.