Results 61 to 70 of about 1,834,552 (357)

Hybrid Control Architecture of an Unmanned Surface Vehicle Used for Water Quality Monitoring

open access: yesIEEE Access, 2022
The study of water quality in reservoirs, lakes, and coasts is an activity that mainly uses human-crewed marine vehicles to obtain site parameters such as temperature, conductivity, salinity, pH, and others. This task is facilitated by unmanned vehicles,
Jorch Mendoza-Chok   +4 more
doaj   +1 more source

Design of Sliding Mode Autopilot with Steady-state Error Elimination for Autonomous Underwater Vehicles [PDF]

open access: yes, 2006
Autonomous Underwater Vehicles (AUVs) have nonlinear and time-varying behaviour and unmodelled dynamics. This paper describes the design, development and evaluation of nonlinear sliding mode autopilot system for an AUV to control the speed, steering and ...
Shi, Juan, Juan Shi
core   +1 more source

Unmanned Aerial Vehicles in Agriculture: A Survey

open access: yesAgronomy, 2021
The number of tasks that nowadays are accomplished by using unmanned aerial vehicles is rising across many civil applications, including agriculture. Thus, this work aims at providing the reader with an overview of the agronomical use of unmanned aerial ...
J. del Cerro   +3 more
semanticscholar   +1 more source

Unmanned Aerial Vehicles in Smart Agriculture: Applications, Requirements, and Challenges [PDF]

open access: yesIEEE Sensors Journal, 2020
In the next few years, smart farming will reach each and every nook of the world. The prospects of using unmanned aerial vehicles (UAV) for smart farming are immense.
Praveen Kumar Reddy Maddikunta   +6 more
semanticscholar   +1 more source

Research on Kalman Filter Fusion Navigation Algorithm Assisted by CNN-LSTM Neural Network

open access: yesApplied Sciences
In response to the challenge of single navigation methods failing to meet the high precision requirements for unmanned aerial vehicle (UAV) navigation in complex environments, a novel algorithm that integrates Global Navigation Satellite System/Inertial ...
Kai Chen   +3 more
doaj   +1 more source

Distributed Robust Formation Tracking Control for Quadrotor UAVs with Unknown Parameters and Uncertain Disturbances

open access: yesAerospace, 2023
In this paper, the distributed formation tracking control problem of quadrotor unmanned aerial vehicles is considered. Adaptive backstepping inherently accommodates model uncertainties and external disturbances, making it a robust choice for the dynamic ...
Linxing Xu, Yang Li
doaj   +1 more source

Assessing use of and reaction to unmanned aerial systems in gray and harbor seals during breeding and molt in the UK

open access: yes, 2015
This work was supported by UK NERC National Environmental Research Council National Capability funding to SMRU, NERC grant No. GE08-001358 to PP, through UK DEFRA support to SMRU, and by development grants from MASTS and Chester Zoo.Wildlife biology ...
Pomeroy, Patrick   +2 more
core   +1 more source

Modeling of an unmanned hybrid aerial vehicle

open access: yes2014 IEEE Conference on Control Applications (CCA), 2014
In this paper, the mathematical modeling of ahybrid aerial vehicle is presented. This vehicle is a combinationof a fixed-wing aircraft and a multirotor helicopter. Thisvehicle is thus capable of vertical take off and landing (VTOL)and of cruising forward flight.
Ducard, Guillaume, Hua, Minh Duc
openaire   +2 more sources

Adaptive finite-time fault-tolerant control scheme of UAV against combined faults

open access: yesScientific Reports
The control of unmanned aerial vehicles (UAVs) has been an active area of research over the past decade, particularly for operations in complex environments.
Xiangfeng Yan, Tao Li, Yuan Tian
doaj   +1 more source

Multi-view Multi-person 3D Human Pose Estimation Based on Center-point Attention [PDF]

open access: yesJisuanji kexue
Multi-view multi-person 3D human pose estimation is widely used in various computer vision tasks.Current spatial voxel-based methods are difficult to achieve real-time computing on edge computing devices due to huge resource consumption.However,the ...
JIANG Yiheng, LI Yang, LIU Chunyan , ZHAO Yunlong
doaj   +1 more source

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