Design of a Persistent Aerial Relay Node (PARN)

Abstract

This paper presents a focused investigation into advanced computational and architectural strategies that enable Unmanned Aerial Vehicles (UAVs) to function as Persistent Relay Nodes (PRNs) in disaster-affected regions where terrestrial communication networks often fail. During large-scale emergencies, long-endurance aerial communication relays become essential; however, conventional battery-powered UAVs are unable to meet these endurance requirements. To address this gap, the study introduces the Persistent Aerial Relay Node (PARN), a Tethered UAV (T-UAV) platform designed to provide uninterrupted communication capability through a hybrid power architecture. The system integrates continuous high-voltage tethered power with a 6S 8000 mAh LiPo emergency battery, ensuring operational resilience during unexpected tether failures.