Results 91 to 100 of about 188,325 (304)
PLoS ONE, 2015 The geometric features of agricultural trees such as canopy area, tree height and crown volume provide useful information about plantation status and crop production.
J. Torres-Sánchez +4 more
semanticscholar +1 more source
PLANTS, PEOPLE, PLANET, EarlyView.Colombia's forests play a crucial role in preserving biodiversity and mitigating climate change, but they are currently facing severe degradation, particularly after the 2016 Peace Agreement. Our literature review highlights a growing research interest in this topic and demonstrates how interdisciplinary approaches combining diverse methods can enhance
Estefanía Muñoz +13 more
wiley +1 more source
Small UAV Target Detection Algorithm Using the YOLOv8n-RFL Based on Radar Detection Technology
SensorsTo improve the unmanned aerial vehicle (UAV) detection and recognition rate based on radar detection technology, this paper proposes to take the radar range-Doppler planar graph that characterizes the echo information of the UAV as the input of the ...
Zhijun Shi, Zhiyong Lei
doaj +1 more source
Pest Management Science, EarlyView.Operators are exposed to concentrated formulation during mixing of pesticide into the nurse tank and to an in‐use dilution during loading the drone; stratification of exposure for mixing and loading would inform the exposure assessment approach by applying the appropriate dermal absorption considerations.
Edgars Felkers +4 more
wiley +1 more source
UAV/UGV Autonomous Cooperation: UAV Assists UGV to Climb a Cliff by Attaching a Tether
, 2019 This paper proposes a novel cooperative system for an Unmanned Aerial Vehicle (UAV) and an Unmanned Ground Vehicle (UGV) which utilizes the UAV not only as a flying sensor but also as a tether attachment device.
Hori, Koichi +2 more
core +1 more source
In Situ Water Quality Measurements Using an Unmanned Aerial Vehicle (UAV) System
, 2018 An unmanned aerial vehicle-assisted water quality measurement system (UAMS) was developed for in situ surface water quality measurement. A custom-built hexacopter was equipped with an open-source electronic sensors platform to measure the temperature ...
Cengiz Koparan +3 more
semanticscholar +1 more source
Frontiers in Plant Science, 2018 Plant nitrogen concentration (PNC) is a critical indicator of N status for crops, and can be used for N nutrition diagnosis and management. This work aims to explore the potential of multispectral imagery from unmanned aerial vehicle (UAV) for PNC ...
Hengbiao Zheng +6 more
semanticscholar +1 more source
Quality and Reliability Engineering International, EarlyView.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
Sliding Mode Control in Aerospace Applications: A Survey
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley +1 more source
Path Planning for Cooperative Routing of Air-Ground Vehicles
, 2016 We consider a cooperative vehicle routing problem for surveillance and reconnaissance missions with communication constraints between the vehicles.
Casbeer, David +2 more
core +1 more source