Marginal tracking algorithm for hypersonic reentry gliding vehicle
Chen‐long Yu, Xian‐si Tan, Zhiguo Qu, Hong Wang, Fei Xie · IET Radar Sonar & Navigation · 2018
Here, the trajectory of hypersonic reentry gliding vehicle is tracked in the East–North–Up (ENU) coordinate system (CS) using a novel marginal tracking algorithm. Firstly, the trajectories are compared and analysed through numerical simulation. The authors try to establish the manoeuvring models based on flight path angle and heading angle. However, they are all invisible in the ENU CS. Fortunately, inclination angle and azimuth angle can be utilised to replace them. Secondly, the trajectory is projected onto the longitudinal and horizontal observation planes and is tracked synchronously in them. The three‐dimensional tracking is achieved through measurement data preprocessing, marginal filtering, and state merging. Finally, the parameters of manoeuvring models in two observation planes are set. Simulation shows that the algorithm has a good robustness and high tracking precision.