提高近程脉冲激光探测系统精度研究

Research on improving measurement precision of pulse laser fuse

为了提高脉冲激光引信探测系统对距离的判别精度,分析了主要的误差来源。利用恒比定时原理,采用浮动阈值电路来消除脉冲激光引信回波信号强弱变化造成的测距误差;同时利用引信炸高已知的特点,用测量距离和设定距离进行比较来减小±1误差。实验证明,该系统在满足激光引信体积,实时性,抗干扰,功耗的前提下,提高了测量精度。

To improve the measurement precision of pulse laser fuse,the main error factor is analysed.To eliminate the distance meter error caused by echo laser energy,fluctuating threshold circuit based on the principle of constant fraction discriminator is designed.Considering the characteristic of fixed burst distance of pulse laser fuse,compare the measure distance and setting distance to reduce the ±1 error.In the experiment,the system can satisfy the pulse laser fuse demand of volume,real time,anti-jamming,meter precision.