摘要
针对激光引信目标散射回波建模存在信息利用不完善的问题,提出了一种考虑时间因子的目标散射回波建模方法。该方法采用功率的实测值对引信视场内的光照度分布进行了拟合计算,并引入了目标不同位置处面元光程差对回波脉冲幅度和宽度的调制效应,研究了激光引信的发射光束与基于光照度的面元散射回波建模原理,在此基础上建立了激光引信目标散射回波的仿真模型。采用该模型计算了正迎头、正尾追及侧迎头交会条件下目标的散射回波。仿真结果表明,目标散射回波随弹目交会参数的变化差异显著,不同弹道的目标散射回波幅值差异可达1~2个数量级。采用该方法可模拟弹目相对位置变化时目标散射回波的时域特征,可用于弹目交会时激光引信回波的数字仿真实验,也可为引信目标识别算法参数的设计与验证提供一定参考。
A method of scattering echo rrtxteling of laser fuze considering time factor was proposed in this paper. Modula- tion effect to amplitude and width of echo pulse was analyzed, Mhich was caused by optical path difference between facets at different position of the target. The transmitted light rrtxtel and the scattering echo rr^el based on illuminance were fo- cused on in this paper. The illuminance distribution in field of laser fuze was calculated by use of experimental power data. Finally the simulation rrtxtel of scattered echo for laser fuze was established. The scattered echo was calculated in head-on, catching-up and crossrange state The results showed that the echo changed apparently with different ballistic parameters while the echo amplitude difference up to one or more orders of magnitude. The model could be used to simulate the time domain characteristic of scattered echo while the relative position changes between missile and target, also it could be used in the digital simulation experiment of laser fuze, which provided a reference in design and verification of target recognition algorithm for laser fuze.
出处
《探测与控制学报》
CSCD
北大核心
2015年第4期11-15,19,共6页
Journal of Detection & Control
