Real-Time Trajectory Planning for Hypersonic Vehicle with Dynamic No-Fly Zone Constraints

This paper pays attention to the trajectory planning method of hypersonic glide vehicle. In the glide phase, the near-space vehicle is vulnerable to be detected and intercept. Therefore, an on-line obstacle avoidance trajectory planning method based on the improved artificial potential field method for the glide section was proposed. Combined with the geometric analysis, the prediction of valid no-fly zone is added to the repulsion potential field, which is beneficial for the vehicle to earlier detect the threat area. According to the multiple constraints and the existence of dynamic environment, the velocity factor is added as an improvement to modify the traditional artificial potential field in three-dimensional space, which can realize the online requirement as well. The simulation results verified the efficiency of proposed algorithm.