Results 31 to 40 of about 12,103 (274)

Object Tracking for an Autonomous Unmanned Surface Vehicle

Machines, 2022
The conventional algorithm used for target recognition and tracking suffers from the uncertainties of the environment, robot/sensors and object, such as variations in illumination and viewpoint, occlusion and seasonal change, etc.
Min-Fan Ricky Lee, Chin-Yi Lin
doaj   +1 more source

Unmanned Aerial Vehicle Surveying For Monitoring Road Construction Earthworks

The Baltic Journal of Road and Bridge Engineering, 2019
Unmanned aerial vehicle photogrammetry is a surveying technique that enables generating point clouds, 3D surface models and orthophoto mosaics. These are based on photos captured with a camera placed on an unmanned aerial vehicle. Within the framework of
Kalev Julge, Artu Ellmann, Romet Köök
doaj   +1 more source

Natural superficial water storage and aquifer recharge assessment in Brazilian savanna wetland using unmanned aerial vehicle and geophysical survey

, 2020
Human pressure on the water resources provided by natural isolated wetlands has intensified in Brazil due to an increase in agricultural land equipped with irrigation.
Moreira, César Augusto [UNESP], Furlan, Lucas Moreira [UNESP], Ferreira, Manuel Eduardo, Bueno, Guilherme Taitson, De Sousa Coelho, Carla Vanessa [UNESP], Furlan, Lucas Moreira, Rosolen, Vania [UNESP], Salles, Jepherson, Mounier, Stéphane, Coelho, Carla Vanessa de Sousa, Rosolen, Vania, Moreira, César Augusto   +11 more
core   +1 more source

Design, integration and sea trials of 3D printed unmanned aerial vehicle and unmanned surface vehicle for cooperative missions [PDF]

, 2021
In recent years, Unmanned Surface Vehicles (USV) have been extensively deployed for maritime applications. However, USV has a limited detection range with sensor installed at the same elevation with the targets. In this research, we propose a cooperative
Yin, Hujun, Pietro Liguori, Hanlin Niu, Ze Ji, Hujun Yin, Joaquin Carrasco, Ji, Ze, Liguori, Pietro, Niu, Hanlin, Carrasco, Joaquin   +9 more
core   +1 more source

Proposed Efficient Design for Unmanned Surface Vehicles

CoRR, 2020
Recently worldwide interest is growing toward commercial, military or scientific Unmanned Surface Vehicle (USV) and hence there is required to develop their guidance, navigation, and control (GNC) systems. Real USVs are a relatively new advent, so the drawbacks of each model will be modified during the time.
Pouyan Asgharian, Zati Hakim Azizul
openaire   +2 more sources

Path‐following algorithms and experiments for an unmanned surface vehicle [PDF]

Journal of Field Robotics, 2009
AbstractThis paper addresses the problem of path following in two‐dimensional space for underactuated unmanned surface vehicles (USVs), defining a set of guidance laws at the kinematic level. The proposed nonlinear Lyapunov‐based control law yields convergence of the path‐following error coordinates to zero.
Marco Bibuli, Gabriele Bruzzone, Massimo Caccia, Lionel Lapierre   +3 more
openaire   +2 more sources

BINOCULAR VISUAL ENVIRONMENT PERCEPTION TECHNOLOGY FOR UNMANNED SURFACE VEHICLE [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Binocular vision system is an essential way for target localization in many fields, which has been widely used as payload of unmanned surface vehicles (USV). High resolution cameras, which can provide richer information, are utilized more often on a USV.
Y. Wang, M. Peng, Z. Liu, W. Wan, K. Di, C. Hu, C. Hu, L. Liu, T. Lv, C. Yang   +9 more
doaj   +1 more source

Control of an Unmanned Surface Vehicle With Uncertain Displacement and Drag [PDF]

IEEE Journal of Oceanic Engineering, 2017
Experimental testing of an unmanned surface vehicle (USV) has been performed to evaluate the performance of two low-level controllers when displacement and drag properties are time-varying and uncertain. The USV is a 4.3 meter long, 150 kilogram wave adaptive modular vessel (WAM-V) with an inflatable twin hull configuration and waterjet propulsion ...
Wilhelm B. Klinger, Ivan R. Bertaska, Karl D. von Ellenrieder, M. R. Dhanak   +3 more
openaire   +2 more sources

Collision avoidance planning for unmanned surface vehicle based on eccentric expansion

International Journal of Advanced Robotic Systems, 2019
The International Regulations for Preventing Collisions at Sea (COLREGS) specify certain navigation rules for ships at risk for collision. Theoretically, the safety of unmanned surface vehicles and traffic boats would be guaranteed when they comply with ...
Lifei Song, Zhuo Chen, Zaopeng Dong, Zuquan Xiang, Yunsheng Mao, Yiran Su, Kai Hu   +6 more
doaj   +1 more source

An Unmanned Vessel Path Planning Method for Floating-Waste Cleaning Based on an Improved Ant Colony Algorithm

Journal of Marine Science and Engineering
Efficient cleaning of floating waste using an intelligent unmanned surface vehicle is an important development trend in inland water governance. Path planning is the core of the decision-making module for unmanned surface vehicle waste cleaning and is ...
Yong Li, Changjun Tang, Sen Yan, Ruichen Wang, Dongxu Gao   +4 more
doaj   +1 more source