基于无控弹道信息的水平风速辨识方法

摘要

风对飞行器的无控飞行轨迹具有重要的影响,若无法获取飞行高度范围内的风速变化规律,则很难准确估计出常规炮弹及修正弹的落点.为了提高弹道预测的精度,提出了一种利用无控弹道测量数据及气动参数进行水平风速辨识的方法.推导了有风条件下炮弹的动力平衡角变化规律,并进一步给出了飞行过程中炮弹加速度与风速之间的关系方程.采用序列二次规划的方法,利用弹道测量得到的弹丸加速度数据估算出不同高度下纵向及侧向水平风速的大小.仿真结果表明,所提出的方法可以有效地估计出不同高度及方向上的水平风速.%The wind has an important influence on the uncontrolled flight trajectories of projectiles. It is difficult to estimate the location of the conventional projectiles and correction projectiles if the wind speed variation in the flight range can not be obtained accurately. In order to improve the accuracy of trajectory prediction, a horizontal wind speed identification method using uncontrolled trajectory data and aerodynamic parameters is proposed. The law of dynamic equilibrium angle of projectile under wind condition is deduced, and then the relation equations between projectile accelerations and wind speeds are given. By sequential quadratic programming (SQP) method, the longitudinal and lateral horizontal wind speeds in different heights are estimated by using the acceleration data obtained by trajectory measurements. The simulation results show that the pro-posed method can estimate the horizontal wind speed in different heights and directions efficiently.