2D plane standoff tracking based on Chaos-Lyapunov guidance vector field

In order to solve the problem that when UAV converges to target circle in the process of tracking target based on existing Lyapunov vector field, the flight path is fixed and easy to be detected, an improved Lyapunov guidance vector field based on Chaos theory (CLGVF) is proposed. CLGVF can achieve the standoff tracking of static or dynamic target and meet UAV's flight dynamics constraint at the same time. The flight path generated overcomes the shortcoming of existing method and its feasibility is verified by simulation in the end.