车载激光侦察告警系统的研究

简述了激光告警器的发展和现状，介绍了车载激光告警器的系统组成、工作原理和特点，并着重对激光探测头和信息处理器设计进行了分析、说明。探测头中的光电探测器采用InGaAsPin光电二极管。信息处理器没有阈值电路，脉宽甄别，二次反射信号抑制等数字化电路，在确认是激光信号后，首先将激光信号数字化，经运算术出激光入射方向，进而通过威胁类型和等级判断电路判别是激光测距信号还是激光制导信号，并根据数据库中存储的数据判断其威胁等级。告警系统具有灵敏度高、响应时间快、动态范围宽等特点，与烟幕施放装置连为一体，实现了激光探测与烟慕干扰的有机结合，并预留了与其他控制设备的通讯接口，便于系统扩展。

Research of vehicular laser passive reconnaissance warning system

The development and actuality of laser passive reconnaissance warning device are sketched. The composition, operation principle and features of the system are introduced. The design of laser probe and data processor of the laser warning device are emphasized. InGaAs Pin photodiode is adopted in the optoelectronic detector of the probe. The data processor comprises threshold circuit, discrimination circuit of pulse bandwidth and twoecho signal restraining circuit. Firstly, the laser signal is digitized under the condition that the signal is affirmed. Then the incident orientation of laser is calculated. Finally, the laser ranging signal and guiding signal are distinguished by threat style and grade curcuit on the basis of threat database. The system has the advantages of high sensitivity, rapid response and wide dynamic range, and it can be linked up with smoke discharging equipment. The system and other defense equipments can be connected by preparatory communication interface.