Results 91 to 100 of about 243,689 (361)

UAV in the advent of the twenties: Where we stand and what is next

open access: yesIsprs Journal of Photogrammetry and Remote Sensing, 2022
has surged in the last two decades, making them popular instruments for a wide range of applications, and leading to a remarkable number of scientific contributions in geoscience, remote sensing and engineering. However, the development of best practices
F. Nex   +8 more
semanticscholar   +1 more source

How Video‐Based Information Affects Farmers' Willingness to Pay for Drone Services

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT Professional service for digital technology like agricultural drones lowers transaction costs and scope thresholds for smallholders. Meanwhile, perceptual adoption barriers remain underexplored. We conduct a two‐stage choice experiment with a randomized video‐based information treatment among 384 Chinese crop farmers to measure its effect on ...
Hua Zhang   +4 more
wiley   +1 more source

Aerodynamic Optimization Design of the Rotor Blade of a Tilt-rotor Aircraft

open access: yesHangkong gongcheng jinzhan, 2019
The aerodynamic design of tilt-rotor needs to synthetically consider the different requirements in helicopter mode and fixed-wing aircraft mode. The multi-objective genetic algorithm based on Kriging surrogate model is used to establish an optimization ...
Sun Kaijun   +3 more
doaj   +1 more source

UAV Communications for 5G and Beyond: Recent Advances and Future Trends [PDF]

open access: yesIEEE Internet of Things Journal, 2019
Providing ubiquitous connectivity to diverse device types is the key challenge for 5G and beyond 5G (B5G). Unmanned aerial vehicles (UAVs) are expected to be an important component of the upcoming wireless networks that can potentially facilitate ...
Bin Li, Zesong Fei, Yan Zhang
semanticscholar   +1 more source

A pan-tilt camera Fuzzy vision controller on an unmanned aerial vehicle

open access: yes, 2009
is paper presents an implementation of two Fuzzy Logic controllers working in parallel for a pan-tilt camera platform on an UAV. This implementation uses a basic Lucas-Kanade tracker algorithm, which sends information about the error between the center ...
Campoy Cervera, Pascual   +10 more
core   +1 more source

Is Precision Agriculture Technology Adoption Persistently Overestimated?

open access: yesAgribusiness, EarlyView.
ABSTRACT Precision agriculture is sometimes assumed to diffuse steadily over time, and industry planning frequently extrapolates early adoption trends forward. This study evaluates the accuracy of such expectations by comparing agricultural input dealers' forecasts of future service offerings with the actual levels of offerings that dealerships ...
Trey Malone   +5 more
wiley   +1 more source

Research on Unsteady Aerodynamic Interference for the Tiltrotor Aircraft in Hover

open access: yesHangkong gongcheng jinzhan, 2019
The high resolution numerical simulation for rotor/wing-body interaction flow-field in hover is crucial for the accurate prediction of aerodynamic performance of the tilt-rotor aircraft, and is the one of the important issues of helicopter aerodynamics ...
Sun Kaijun   +3 more
doaj   +1 more source

Robust Reinforcement Learning Control Framework for a Quadrotor Unmanned Aerial Vehicle Using Critic Neural Network

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Quadrotor unmanned aerial vehicle control is critical to maintain flight safety and efficiency, especially when facing external disturbances and model uncertainties. This article presents a robust reinforcement learning control scheme to deal with these challenges.
Yu Cai   +3 more
wiley   +1 more source

Efficient Face Recognition via Multi-UAV-Edge Collaboration in UAV Delivery Service

open access: yes, 2022
Efficient Face Recognition via Multi-UAV-Edge Collaboration in UAV Delivery ...
A Yao (13306335)   +6 more
core   +1 more source

Research on Autonomous Manoeuvre Decision Making in Within-Visual-Range Aerial Two-Player Zero-Sum Games Based on Deep Reinforcement Learning

open access: yesMathematics
In recent years, with the accelerated development of technology towards automation and intelligence, autonomous decision-making capabilities in unmanned systems are poised to play a crucial role in contemporary aerial two-player zero-sum games (TZSGs ...
Bo Lu   +5 more
doaj   +1 more source

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