鸭式布局双旋弹建模及弹道重构

建立了一种新型旋转弹丸的7自由度弹道模型,根据该模型对弹丸的弹道特性进行了数值分析,并利用无迹卡尔曼滤波算法对双旋弹的弹道进行重构和滤波,使弹载设备的测量信息更加精确,为制导系统提供更加精确、可靠的测量数据。通过数值仿真的表明:双旋弹和传统旋转弹的主要区别是在其弹轴方向上增加了一个自由度,弹丸前体低速旋转甚至静止不动以提高弹载控制系统的控制精度,后体高速旋转保持其陀螺稳定性。通过无迹卡尔曼滤波算法进行弹道重构能够有效地提高测量数据的精度,消除测量误差,得到较为准确的测量数据。

Modeling and reconstruction for dual-spinning projectiles with canards

A seven degree ballistic model for a new type of guided projectile is established. The numerical simulation for the ballistic property is analyzed according to the established mathematical model. The unscented Kalman filter (UKF) is also used for the reconstruction and filtering for the measured ballistic data. This process can make the measured ballistic data more accurate and can supply reliable measurement data for the guided system. The simulation result shows that the main difference between dual-spinning projectile and traditional spinning projectile is that the spinning rate along the symmetric axis is divided into two parts. The former part keeps a lower spinning rate or even static to make the property of control system to be better and the aft part maintains a higher spinning rate to hold the gyroscopic stability. The UKF is also used to eliminate the errors in the measured data.