Risk Sensitive Rendezvous Algorithm for Heterogeneous Agents in Urban Environments

Demand for fast and inexpensive parcel deliveries in urban environments has risen considerably in recent years. A framework is envisioned to enforce efficient last mile delivery in urban environments by leveraging a network of ride-sharing vehicles, where Unmanned Aerial Systems (UASs) drop packages on said vehicles which then cover the majority of the distance to finally be picked up by another UAS for delivery. This approach presents many engineering challenges, including the safe rendezvous of both agents: the UAS and the human-operated ground vehicle. In this paper, we introduce a framework to minimize the risk of failure, while allowing for optimal usage of the controlled agent. We formulate a compact fast planner to drive a UAS to a passive ground vehicle with inexact behavior, while providing intuitive and meaningful procedures to guarantee safety with minimal sacrifice of optimality. The resulting algorithm is shown to be fast and implementable in real-time via numerical tests.