全捷联激光制导弹药双透镜滚转角测量方法

摘要

针对应用于末制导弹药中滚转角测量方法出现的各种不足,提出一种全捷联激光制导弹药双透镜滚转角测量方法.利用添加透镜光斑与滚转角无关的特点,将非滚转光斑作为滚转角测量基准,通过激光束经过两透镜在阵列位移敏感探测器(Position Sensitive Detector,PSD)光斑坐标间相对位置关系,得到弹体滚转角计算公式.根据测量原理及设计结构,对测量精度进行了分析.将该方法结合弹体六自由度运动模型进行模拟打靶实验,分析测量方法实时精度.实验结果表明:滚转角测量值在各种实验环境下最大误差不超过0.05°,其精度满足激光制导弹药制导与控制需求.%Aiming at the various deficiencies of roll angle measurement method in terminal-guided ammunition,a roll angle measurement method of double lenses in strapdown laser guided ammunition is proposed.The non-roll spot is used as the roll angle measurement benchmark because the lens spot is unrelated to the roll angle.Using the relative positional relationship between the spot coordinates in the position sensitive detector(PSD) after laser beam passes two lenses,the calculation formula of roll angle is obtained.According to measuring principle and designed structure,the measurement accuracy is analyzed.This method is combined with body 6 DOF movement model to simulate the targeting.The results show that:the max measuring error of roll angle in various experimental environment is less than 0.05 degree,and the accuracy meet the guided and control demand of laser guided ammunition.