Results 21 to 30 of about 7,240 (212)

Control of Unmanned Surface Vehicle Along the Desired Trajectory Using Improved Line of Sight and Estimated Sideslip Angle

open access: yesPolish Maritime Research, 2021
In order to improve the accuracy and robustness of path following control for an Unmanned Surface Vehicle (USV) suffering from unknown and complex disturbances, a variable speed curve path following a control method based on an extended state observer ...
Li Ligang   +3 more
doaj   +1 more source

Path Planning Method of Unmanned Surface Vehicles Formation Based on Improved A* Algorithm

open access: yesJournal of Marine Science and Engineering, 2023
Unmanned surface vehicle (USV) formation is a hot topic of current research. Path planning is the core technology for USV formation. This paper focuses on a USV formation path planning problem considering kinetic constraints.
Tongtong Sang   +4 more
doaj   +1 more source

A hybrid air-sea cooperative approach combined with a swarm trajectory planning method

open access: yesPaladyn, 2020
This work addresses the issue of ocean monitoring and clean-up of polluted zones, as well as the notion of trajectory planning and fault tolerance for semi-autonomous unmanned vehicles.
Bella Salima   +2 more
doaj   +1 more source

High-Level Path Planning for an Autonomous Sailboat Robot Using Q-Learning

open access: yesSensors, 2020
Path planning for sailboat robots is a challenging task particularly due to the kinematics and dynamics modelling of such kinds of wind propelled boats. The problem is divided into two layers. The first one is global were a general trajectory composed of
Andouglas Gonçalves da Silva Junior   +4 more
doaj   +1 more source

Functional clustering of mouse ultrasonic vocalization data. [PDF]

open access: yesPLoS ONE, 2018
Mouse ultrasonic vocalizations (USVs) are studied in many fields of science. However, various noise and varied USV patterns in observed signals make complete automatic analysis difficult.
Xiaoling Dou   +2 more
doaj   +1 more source

Ultrasonic Vocalizations Emission across Development in Rats: Coordination with Respiration and Impact on Brain Neural Dynamics

open access: yesBrain Sciences, 2021
Rats communicate using ultrasonic vocalizations (USV) throughout their life when confronted with emotionally stimulating situations, either negative or positive.
Julie Boulanger-Bertolus   +1 more
doaj   +1 more source

Analysis of characteristics of foreign unmanned surface vehicle swarm combat application and proposed countermeasures

open access: yesZhongguo Jianchuan Yanjiu, 2023
As an important component of future naval campaigns, the unmanned surface vehicle (USV) swarm is an important direction for the development of unmanned maritime assets in various counties.
Wei FENG   +4 more
doaj   +1 more source

Altered USV production in old Tau.P301L mice. [PDF]

open access: yes, 2013
A1- Rough USV spectrographic display with frequency and time scales in kHz and ms, respectively. A2 – As above but showing the tags (Tg, white dots) placed at slope changes in frequency on the rough USV and the analyzed USV parameters: duration of USV ...
Fred Van Leuven (259572)   +7 more
core   +1 more source

Towards the Use of a Team of USVs for Civilian Harbour Protection: USV Interception of Detected Menaces

open access: yesIFAC Proceedings Volumes, 2010
Abstract The protection of civilian harbours has received an increasing interest after September 11th. One of the areas currently under major investigation is the use of a team of Unmanned Surface Vehicles (USVs), which could be exploited for patrolling purposes and to investigate suspect situations, increasing the effectiveness of the harbor ...
SIMETTI, ENRICO   +4 more
openaire   +2 more sources

Semi-Automated Training of Rat Ultrasonic Vocalizations

open access: yesFrontiers in Behavioral Neuroscience, 2022
Rats produce ultrasonic vocalizations (USVs) for conspecific communication. These USVs are valuable biomarkers for studying behavioral and mechanistic changes in a variety of diseases and disorders. Previous work has demonstrated operant conditioning can
Aaron M. Johnson   +7 more
doaj   +1 more source

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