Finite-Time Standoff Target Tracking in the Presence of Wind

In this paper, we propose a novel vector-field based guidance law for an unmanned aircraft (UA) to track a stationary and a moving target while maintaining a desired standoff distance under constant vehicle speed conditions in the absence and presence of wind. The guidance law achieves the convergence of the path of UA to the desired standoff distance with its heading angle to the desired heading angle in finite-time. We analyze the theoretical properties of the proposed guidance law using Lyapunov theory and evaluate the performance of the proposed guidance law through simulations and hardware experiments.