【摘要】 激光引信在弹道导弹上的作用是用于测量并控制弹头的爆炸高度,而云的消光及后向散射会对激光引信的测高性能造成干扰,本文利用激光引信测高方程及接收信噪比公式具体分析和计算了云的影响程度,得出了具有说服力的结论。为解决云的干扰问题,研究了将时变增益控制、多停止脉冲计数、距离选通、脉宽测量等几项抗干扰测距技术结合起来,设计了一种硬软结合的激光引信信号处理方案,以尽可能减小云的干扰影响。更多还原

【Abstract】 Ballistic missile’s laser fuse is used to measure and control warhead’s blasting height.The cloud’s extinction and backscattering will cause interference to altimetry performance of laser fuse.So the degree of influence is calculated and analyzed through using laser ranging equation and receiver SNR formula.And a convictive conclusion is got.To solve the problem of cloud’s interference,a signal processing scheme is designed,which is a combination of hardware and software.The scheme consists of four anti-interference ranging technologies,viz.time-varying gain control,multistopping pulse-counting,range gating and pulse width measurement,so as to reduce cloud’s interference furthest.更多还原