Results 21 to 30 of about 5,012,490 (221)

3D Smooth Trajectory Planning for UAVs under Navigation Relayed by Multiple Stations Using Bézier Curves

open access: yesElectronics, 2023
Navigation relayed by multiple stations (NRMS) is a promising technique that can significantly extend the operational range of unmanned aerial vehicles (UAVs) and hence facilitate the execution of long-range tasks. However, NRMS employs multiple external stations in sequence to guide a UAV to its destination, introducing additional variables and ...
Mingfeng Qi, Lihua Dou, Bin Xin
openaire   +1 more source

A Real-Time Flight Safety Alarm System for Multiple UAVs [PDF]

open access: yesMATEC Web of Conferences, 2019
Airborne heterogeneous UAVs can encounter flight control or sensor failures while performing flight tasks. To protect against this, safety alarm systems (SAS) are typically implemented in ground control systems (GCS) to prevent crashes or other failures.
San Khin Thida, Chang Yoon Seok
doaj   +1 more source

Autonomous unmanned aerial vehicle flight control using multi-task deep neural network for exploring indoor environments

open access: yesSICE Journal of Control, Measurement, and System Integration, 2022
In recent years, owing to the advance in image processing using deep learning, autonomous unmanned aerial vehicle (UAV) navigation based on image recognition has become possible.
Viet Duc Bui   +2 more
doaj   +1 more source

Decentralized triangular relative navigation of multiple UAVs based on relative range and inertial measurements

open access: yesISA Transactions, 2023
Abstract In this paper, a novel algorithm for cooperative relative navigation of multiple Unmanned Aerial Vehicles (UAVs) is proposed based on relative range and inertial measurements. In this algorithm, a relative motion estimation model is established for each group of three UAVs that can form a triangle in space.
Meysam Alizad, Hadi Nobahari
openaire   +2 more sources

Towards Autonomy of a Quadrotor UAV [PDF]

open access: yes, 2008
As the potential of unmanned aerial vehicles rapidly increases, there is a growing interest in rotary vehicles as well as fixed wing. The quadrotor is small agile rotary vehicle controlled by variable speed prop rotors.
Cowling, Ian
core   +7 more sources

COMPARING THE ACCURACY OF GNSS POSITIONING VARIANTS FOR UAV BASED 3D MAP GENERATION [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
GNSS stands for Global Navigation Satellite System and is the standard generic term for satellite navigation systems that provide autonomous geo-spatial positioning with global coverage.
H. Haddadi Amlashi   +3 more
doaj   +1 more source

UAV Localization in Low-Altitude GNSS-Denied Environments Based on POI and Store Signage Text Matching in UAV Images

open access: yesDrones, 2023
Localization is the most important basic information for unmanned aerial vehicles (UAV) during their missions. Currently, most UAVs use GNSS to calculate their own position.
Yu Liu   +6 more
doaj   +1 more source

Coordinated motion of UGVs and a UAV [PDF]

open access: yes, 2013
Coordination of autonomous mobile robots has received significant attention during the last two decades. Coordinated motion of heterogenous robot groups are more appealing due to the fact that unique advantages of different robots might be combined to ...
Soner Ulun   +3 more
core   +1 more source

Sensitivity to Time Delays in VDM-Based Navigation

open access: yesDrones, 2019
A recently proposed navigation methodology for aerial platforms based on the vehicle dynamic model (VDM) has shown promising results in terms of navigation autonomy.
Gabriel Laupré   +2 more
doaj   +1 more source

In Situ Calibration and Trajectory Enhancement of UAV and Backpack LiDAR Systems for Fine-Resolution Forest Inventory

open access: yesRemote Sensing, 2023
Forest inventory has been relying on labor-intensive manual measurements. Using remote sensing modalities for forest inventory has gained increasing attention in the last few decades.
Tian Zhou   +5 more
doaj   +1 more source

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