Results 41 to 50 of about 35,165 (291)

MONITORING THE VEGETATION OF AGRICULTURAL CROPS USING DRONES AND REMOTE SENSING - COMPARATIVE PRESENTATION [PDF]

Scientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2021
Precision farming is agricultural land management, involving the introduction of efficient technologies and machinery to make farming more efficient and ensure production control.
Cristinel FERTU, Liviu Marian DOBROTA, Daniela Lavinia BALASAN, Silvius STANCIU   +3 more
doaj  

Autonomous Collision avoidance for Unmanned aerial systems [PDF]

, 2014
Unmanned Aerial System (UAS) applications are growing day by day and this will lead Unmanned Aerial Vehicle (UAV) in the close future to share the same airspace of manned aircraft.This implies the need for UAS to define precise safety standards ...
Melega, Marco
core  

Metasurface‐Enabled Active‐Like Passive Radar

Advanced Science, EarlyView.
A programmable space‐time‐coding metasurface embeds distinct spatiotemporal tags into ambient wireless signals, allowing passive radar to operate in an active‐like manner. By enabling code‐correlated reconstruction under interference, the approach supports robust real‐time UAV tracking in complex environments and points to intelligent, low‐power ...
Mingyi Li, Jiawen Xu, Hanting Zhao, Xu Zhao, Yanjin Chen, Tie Jun Cui, Vincenzo Galdi, Lianlin Li   +7 more
wiley   +1 more source

Synchronized Motion-Based UAV–USV Cooperative Autonomous Landing

Journal of Marine Science and Engineering, 2022
A synchronous motion-based control strategy for unmanned aerial vehicle (UAV) landing on an unmanned surface vehicle (USV) is proposed to address the problem of low accuracy or even failure of UAV landing on the surface of a USV under wave action ...
Wenzhan Li, Yuan Ge, Zhihong Guan, Gang Ye   +3 more
doaj   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

Advanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source

Features of the use of unmanned aerial vehicles for agriculture applications

Aviation, 2013
Micro-UAVs (unmanned aerial vehicles) with a total weight below 5 kg are interesting alternative carriers for agricultural applications. Compared to standard airborne aerial surveys, UAVs are much more flexible and weather independent. As a result, micro-
Aleksandrs Urbahs, Ieva Jonaite
doaj   +1 more source

Modeling and control of a tiltrotor unmanned aerial vehicle for path tracking [PDF]

, 2015
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Automação e Sistemas, Florianópolis, 2015.Abstract : This master thesis deals with the modeling and control of a small scale ...
Donadel, Rodrigo
core  

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

, 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, Martínez Luna, Carol Viviana, Olivares Méndez, Miguel Ángel, Mondragon, Ivan, Mondragon Bernal, Ivan Fernando, Pascual Campoy, Martinez, Carol, Campoy, Pascual, Miguel A. Olivares-Mendez, Carol Martinez, Ivan Mondragon   +10 more
core   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Uniform terminology for unmanned aerial vehicles: their concept and legal regulation

Jus Strictum
The field of legal regulation for unmanned aerial vehicles (UAVs) lacks a unified terminology, and the prevailing trend is either to replace the term “unmanned aerial vehicle” or to abandon it altogether.
Aleksandr V. Moiseev, Valentina Yu. Moiseeva   +1 more
doaj   +1 more source