基于自适应滤波的高超声速滑翔目标三维跟踪算法

针对临近空间高超声速滑翔飞行器机动模式复杂,单一运动学模型难以完成三维跟踪的问题,提出一种三维跟踪方法.将飞行器机动弹道分为纵向和横向弹道,根据飞行器机动特性,在纵向上将加速度建模为零均值的二阶时间自相关随机过程,在横向上采用Singer模型和匀加速模型进行交互多模型(interactive multiple mode...

3D tracking algorithm of hypersonic gliding target based on adaptive filtering

In order to solve the problem that the maneuvering mode of hypersonic gliding vehicle is complex and the single kinematic model is difficult to complete the three-dimensional tracking,a three-dimensional tracking method is proposed.The maneuvering trajectory of the vehicle is divided into longitudinal and lateral trajectory.According to the maneuvering characteristics of the vehicle,the acceleration is modeled as a second-order time autocorrelation stochastic process with zero mean in the longitudinal direction,and the Singer+constant acceleration interactive multiple model(IMM)is used in the lateral direction.The unbiased measurement transformation is introduced to transform the radar observation model in spherical coordinate system to Cartesian coordinate system,which avoids the nonlinear filtering of the model.Finally,based on the existing Kalman filtering,an adaptive Kalman filtering algorithm based on multiple fading factors is designed to enhance the adaptive tracking ability of the model for strong maneuvers.The simulation results show that the algorithm can keep better stability and tracking accuracy when tracking hypersonic gliding target.