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Results 181 to 190 of about 14,844 (255)

Estimation of Error Margin in the Quantification of Large Wood Volumes in River From In Situ and UAV Measurements

Earth Surface Processes and Landforms, Volume 51, Issue 10, October 2026.
Large wood (LW) plays a key role in river dynamics and biodiversity, but quantifying its volume and budget remains challenging. This study compared in situ and UAV‐based measurements of LW jams in two Gaspé Peninsula rivers (Québec, Canada), highlighting strong variability mainly due to operator bias. A new methodology reduced this variability, leading
Maxime Gillet +4 more
wiley +1 more source

A distributed task allocation approach for multi-UAV persistent monitoring in dynamic environments. [PDF]

Sci Rep
Zhang C, Xu C, Li G, He B.
europepmc +1 more source

Drought Risk in Mango and Avocado Orchards: Insights Into Plant Water Relations and Irrigation‐Related Agronomic Solutions

Irrigation and Drainage, Volume 75, Issue 4, Page 1738-1763, Otober 2026.
ABSTRACT Climate change is making water availability more uncertain, with growing consequences for the productivity and long‐term sustainability of tropical and subtropical fruit orchards. Mangifera indica L. and Persea americana Mill. both require large amounts of water to sustain growth and productivity.
Eleonora Cataldo
wiley +1 more source

Integrated method for multi-UAV task assignment and trajectory planning with deadlock based on Three-dimensional dubins path. [PDF]

Sci Rep
Wu W, Zhang L, Le J, Lu Z.
europepmc +1 more source

Unmanned Aerial Systems for Corrosion Detection: Multi‐Sensor Technologies, Challenges, and Opportunities for Next‐Generation Inspection

Quality and Reliability Engineering International, Volume 42, Issue 6, Page 3565-3583, October 2026.
ABSTRACT Corrosion remains a critical threat to the integrity and service life of infrastructure in industries such as oil, gas, construction, renewable energy, and transportation. Traditional inspection methods, being labor‐intensive, hazardous, and often subjective, fall short in addressing modern inspection demands.
Alhossein Alharbi +3 more
wiley +1 more source

Multi-UAV Collaborative Target Search Method in Unknown Dynamic Environment. [PDF]

Sensors (Basel)
Yang L, Hao Y, Xu J, Li M.
europepmc +1 more source

Age Replacement for Balanced Systems Under Mission Durations

Quality and Reliability Engineering International, Volume 42, Issue 6, Page 3369-3384, October 2026.
ABSTRACT With advances in technology, systems such as Unmanned Aerial Vehicles (UAV) and planetary landing vehicles whose operation requires maintaining balance across sectors have attracted increasing attention within the balanced systems literature.
Ferhan BAŞ KAMAN
wiley +1 more source

Research on multi-UAV autonomous obstacle avoidance algorithm integrating improved dynamic window approach and ORCA. [PDF]

Sci Rep
Chang X, Wang J, Li K, Zhang X, Tang Q.
europepmc +1 more source

Deep Reinforcement Learning Based Autonomous Decision‐Making for Cooperative Uncrewed Aerial Vehicles: A Search and Rescue Real World Application

Journal of Field Robotics, Volume 43, Issue 7, Page 4382-4401, October 2026.
ABSTRACT This paper presents the first end‐to‐end framework that combines guidance, navigation, and centralized task allocation for multiple UAVs performing autonomous search‐and‐rescue (SAR) in GNSS‐denied indoor environments. A twin delayed deep deterministic policy gradient controller is trained with an artificial potential field (APF) reward that ...
Thomas Hickling +3 more
wiley +1 more source

Multi-UAV Escape Target Search: A Multi-Agent Reinforcement Learning Method. [PDF]

Sensors (Basel)
Liao G, Wang J, Yang D, Yang J.
europepmc +1 more source

path planning
uav