Michael Mugnai, Massimo Teppati Losé, Edwin Herrera-Alarcón, Gabriele Baris, Massimo Satler, Carlo Avizzano

An Efficient Framework for Autonomous UAV Missions in Partially-Unknown GNSS-Denied Environments

  • Artificial Intelligence
  • Computer Science Applications
  • Aerospace Engineering
  • Information Systems
  • Control and Systems Engineering
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Nowadays, multirotors are versatile systems that can be employed in several scenarios, where their increasing autonomy allows them to achieve complex missions without human intervention. This paper presents a framework for autonomous missions with low-cost Unmanned Aerial Vehicles (UAVs) in Global Navigation Satellite System-denied (GNSS-denied) environments. This paper presents hardware choices and software modules for localization, perception, global planning, local re-planning for obstacle avoidance, and a state machine to dictate the overall mission sequence. The entire software stack has been designed exploiting the Robot Operating System (ROS) middleware and has been extensively validated in both simulation and real environment tests. The proposed solution can run both in simulation and in real-world scenarios without modification thanks to a small sim-to-real gap with PX4 software-in-the-loop functionality. The overall system has competed successfully in the Leonardo Drone Contest, an annual competition between Italian Universities with a focus on low-level, resilient, and fully autonomous tasks for vision-based UAVs, proving the robustness of the entire system design.

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