Results 21 to 30 of about 2,766 (193)

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

ISA 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

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

The 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, F. Samadzadegan, F. Dadrass Javan, M. Savadkouhi   +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

Drones, 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, Jing Bai, Gang Wang, Xiaobo Wu, Fangde Sun, Zhengqiang Guo, Hujun Geng   +6 more
doaj   +1 more source

Sensitivity to Time Delays in VDM-Based Navigation

Drones, 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, Mehran Khaghani, Jan Skaloud   +2 more
doaj   +1 more source

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

Remote 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, Radhika Ravi, Yi-Chun Lin, Raja Manish, Songlin Fei, Ayman Habib   +5 more
doaj   +1 more source

Towards Flocking Navigation and Obstacle Avoidance for Multi-UAV Systems through Hierarchical Weighting Vicsek Model

Aerospace, 2021
Flocking navigation and obstacle avoidance in complex environments remain challenging for multiple unmanned aerial vehicle (multi-UAV) systems, especially when only one UAV (termed as information UAV) knows the predetermined path and the communication ...
Xingyu Liu, Chao Yan, Han Zhou, Yuan Chang, Xiaojia Xiang, Dengqing Tang   +5 more
doaj   +1 more source

Scalable and Cooperative Deep Reinforcement Learning Approaches for Multi-UAV Systems: A Systematic Review

Drones, 2023
In recent years, the use of multiple unmanned aerial vehicles (UAVs) in various applications has progressively increased thanks to advancements in multi-agent system technology, which enables the accomplishment of complex tasks that require cooperative ...
Francesco Frattolillo, Damiano Brunori, Luca Iocchi   +2 more
doaj   +1 more source

Learning Highly Dynamic Skills Transition for Quadruped Jumping Through Constrained Space

Advanced Robotics Research, EarlyView.
A quadruped robot masters dynamic jumps through constrained spaces with animal‐inspired moves and intelligent vision control. This hierarchical learning approach combines imitation of biological agility with real‐time trajectory planning. Although legged animals are capable of performing explosive motions while traversing confined spaces, replicating ...
Zeren Luo, Jiahui Zhang, Yimin Han, Ji Ma, Minghao Lu, Ioannis Havoutis, Peng Lu   +6 more
wiley   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

A CNN-Based Micro-UAV System for Real-Time Flower Detection and Target Approach

Automation
This paper presents the application of a micro unmanned aerial vehicle (UAV) that acts as a pollination agent in a controlled environment simulating greenhouse conditions.
Mohd Ismail Yusof, Fatin Nabilah Mohd Yasin, Ayu Gareta Risangtuni, Narendra Kurnia Putra, Siti Hafshar Samseh, Azavitra Zainal, Mohd Aliff Afira Sani   +6 more
doaj   +1 more source