Browsing Faculty of Engineering by Subject "Unmanned aerial vehicles"
Now showing items 1-9 of 9
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Composite fading model for aerial MIMO FSO links in the presence of atmospheric turbulence and pointing errors
(IEEE, 2021-06)In this letter, we introduce accurate approximation expressions for composite fading channel model and outage probability of multiple-input multiple-output (MIMO) free space optical (FSO) link between two unmanned aerial ... -
Connectivity considerations for mission planning of a search and rescue drone team
(TÜBİTAK, 2020)In this paper, we analyze the mission success performance and mission times of centralized, distributed, and hybrid path-planning methods for a drone team whose mission is to find a target and inform the ground control. ... -
Joint or decoupled optimization: Multi-UAV path planning for search and rescue
(Elsevier, 2023-01-01)In this paper, we focus on path planning of drone teams deployed for search and rescue missions. The goal of the mission is to detect a target, inform the rescue personnel at the ground base station (BS), and form a ... -
Maintaining connectivity for multi-UAV multi-target search using reinforcement learning
(Association for Computing Machinery, Inc, 2023-10-30)We propose a dynamic path planner that uses a multi-Agent reinforcement learning (MARL) model with novel reward functions for multi-drone search and rescue (SAR) missions. We design a mission environment where a multi-drone ... -
Positioning aerial relays to maintain connectivity during drone team missions
(Elsevier, 2022-04-01)Approaches that aim to maintain the connectivity of unmanned aerial vehicles (UAVs) or drones either utilize cellular networks or propose to jointly optimize connectivity needs with other mission tasks. Therefore, most ... -
UAV-based FSO communications for high speed train backhauling
(IEEE, 2019)In line with the increasing number of high speed train (HST) commuters and their demand for mobile data, railways operators expore means of providing high speed on-board wireless access. The data from all train cars are ... -
Ultraviolet communications for ground-to-air links
(IEEE, 2019)Ultraviolet (UV) communication enables non-line-of-sight (NLOS) wireless connectivity through strong molecular and aerosol scattering. Due to their NLOS nature, UV links bring robustness to blockage or shadowing and relax ... -
Ultraviolet communications for unmanned aerial vehicle networks
(IEEE, 2022)Due to the strong scattering, ultraviolet (UV) communication links enable non-line-of-sight (NLOS) outdoor connectivity and relax the pointing, acquisition, and tracking requirements encountered in infrared links. This ... -
Unmanned-aerial-vehicle-assisted cooperative communications for visible light communications-based vehicular networks
(SPIE, 2019-08)We propose and investigate cooperative visible light communications (VLC) enabled vehicular network architecture with an unmanned aerial vehicle (UAV) relay. In the proposed system, a UAV equipped with an onboard photodetector ...
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