运动靶标激波检靶定位模型

Model of Moving Target's Shock Wave Trigged Positioning System

为提高运动靶标的激波检靶定位精度,对定位模型和求解算法进行研究。采用几何方法推导弹丸激波到达传声器阵列时间的模型,通过非线性最小二乘法求解弹丸飞行速度、命中坐标、入射角等参数。利用该模型进行仿真,分析靶标速度误差、激波到达时间误差和弹丸速度等对检靶精度的影响。结果表明:忽略快速运动靶标的速度会带来较大检靶定位误差,必须在激波检靶建模求解时考虑靶标运动速度。

For improving the positioning accuracy of moving target with shock wave trigged scoring system,the positioning model and solution algorithm are studied.The projectile shock wave arrival time is derived by geometric method,and the velocity,hit coordinate,incidence angle of projectile are solved by nonlinear least-squares method.The model is used to simulate and analyze the influences of target velocity error,shock wave arrival time error and projectile velocity on target positioning accuracy.The simulation results show that ignoring the velocity of the fast target will lead to large target positioning error,so the velocity of the target must be considered in the modeling and solving.