Results 101 to 110 of about 15,242 (220)

Unmanned Surface Vessel–Unmanned Aerial Vehicle Cooperative Path Following Based on a Predictive Line of Sight Guidance Law

Journal of Marine Science and Engineering
This paper explores the cooperative control of unmanned surface vessels (USVs) and unmanned aerial vehicles (UAVs) in maritime rescue and coastal surveillance.
Hugan Zhang, Jiaming Fan, Xianku Zhang, Haitong Xu, C. Guedes Soares   +4 more
doaj   +1 more source

Fixed-Time Formation Control for Multi-Unmanned Surface Vessel Systems with Input Delay

水下无人系统学报
In recent years, fixed-time formation control has become a major research focus in multi-unmanned surface vessel(USV) systems. A critical challenge in achieving fixed-time formation in these systems is handling input delays.
Jianxiang LI, Wenle ZHANG, Ming LI
doaj   +1 more source

Solving Heterogeneous USV Scheduling Problems by Problem-Specific Knowledge Based Meta-Heuristics with Q-Learning

Mathematics
This study focuses on the scheduling problem of heterogeneous unmanned surface vehicles (USVs) with obstacle avoidance pretreatment. The goal is to minimize the overall maximum completion time of USVs.
Zhenfang Ma, Kaizhou Gao, Hui Yu, Naiqi Wu   +3 more
doaj   +1 more source

Assessment of the Steering Precision of a Hydrographic Unmanned Surface Vessel (USV) along Sounding Profiles Using a Low-Cost Multi-Global Navigation Satellite System (GNSS) Receiver Supported Autopilot. [PDF]

Sensors (Basel), 2019
Specht M, Specht C, Lasota H, Cywiński P.   +3 more
europepmc   +1 more source

Method for Obstacle Avoidance Path Planning of Unmanned Surface Vessel Based on Improved Artificial Potential Field Method

水下无人系统学报
To solve the problem of local path planning for obstacle avoidance of unmanned surface vessels, an artificial potential field framework was proposed, and a local path planning method for obstacle avoidance based on the dynamic construction of the water ...
Yabo ZHANG, Hongrui WANG, Haiyan ZHANG, Qiang XIAO, Yuxin LIU   +4 more
doaj   +1 more source

Preliminary description of the modified JPL 25-ft space simulator [PDF]

Design, and instrumentation of modified space environment simulator for spacecraft ...
Argoud, M. J.
core   +1 more source

Advanced-power-reactor design concepts and performance characteristics [PDF]

Five reactor cooling concepts which allow continued reactor operation following a single rupture of the coolant system are presented for application with the APR.
Davison, H. W., Kirchgessner, T. A., Springborn, R. H., Yacobucci, H. G.   +3 more
core   +1 more source

Design of a Thermal and Micrometeorite Protection System for an Unmanned Lunar Cargo Lander [PDF]

The first vehicles to land on the lunar surface during the establishment phase of a lunar base will be unmanned lunar cargo landers. These landers will need to be protected against the hostile lunar environment for six to twelve months until the next ...
Hernandez, Carlos A., Sunder, Sankar, Vestgaard, Baard   +2 more
core   +1 more source

CatOne, un nuovo robot navigante per rilievi idrogeologici ed ambientali

GEOmedia, 2012
Visitando gli spazi espositivi della manifestazione Euregeo, recentemente tenutasi a Bologna, ci siamo imbattuti in un innovativo catamarano robotizzato specializzato per prospezioni nel settore idrogeologico ed ambientale senza operatori a bordo ...
Redazione GEOmedia
doaj  

CORAL-Catamaran for Underwater Exploration: Development of a Multipurpose Unmanned Surface Vessel for Environmental Studies. [PDF]

Sensors (Basel)
Cocchi L, Muccini F, Locritani M, Spinelli L, Cocco M.   +4 more
europepmc   +1 more source