Results 11 to 20 of about 166,700 (296)

Exploring Underwater Environments with Curiosity [PDF]

open access: yes2014 Canadian Conference on Computer and Robot Vision, 2014
This paper presents a novel approach to modeling curiosity in a mobile robot, which is useful for monitoring and adaptive data collection tasks. We use ROST, a real time topic modeling framework to build a semantic perception model of the environment, using which, we plan a path through the locations in the world with high semantic information content.
Yogesh Girdhar, Gregory Dudek
openaire   +1 more source

Underwater light environment in Arctic fjords

open access: yesEarth System Science Data, 2023
Abstract. Most inhabitants of the Arctic live near the coastline, which includes fjord systems where socio-ecological coupling with coastal communities is dominant. It is therefore critically important that the key aspects of Arctic fjords be measured as well as possible.
R. W. Schlegel   +11 more
openaire   +10 more sources

Battery-free wireless imaging of underwater environments

open access: yesNature Communications, 2022
AbstractImaging underwater environments is of great importance to marine sciences, sustainability, climatology, defense, robotics, geology, space exploration, and food security. Despite advances in underwater imaging, most of the ocean and marine organisms remain unobserved and undiscovered.
Sayed Saad Afzal   +6 more
openaire   +3 more sources

Reactive Control for Collision Evasion with Extended Obstacles

open access: yesSensors, 2022
Evading collisions in three-dimensional underwater environments is critical in exploration of an Autonomous Underwater Vehicle (AUV). In underwater environments, AUV measures an obstacle surface by utilizing a three-dimensional active sonar. This article
Jonghoek Kim
doaj   +1 more source

DANAE++: A Smart Approach for Denoising Underwater Attitude Estimation

open access: yesSensors, 2021
One of the main issues for the navigation of underwater robots consists in accurate vehicle positioning, which heavily depends on the orientation estimation phase.
Paolo Russo   +2 more
doaj   +1 more source

Krill: An exploration in underwater sensor networks [PDF]

open access: yes, 2005
While sensor networks have now become very popular on land, the underwater environment still poses some difficult problems. Communication is one of the difficult challenges under water. There are two options: optical and acoustic.
Chen, P.   +7 more
core   +3 more sources

Joint Model-Order and Robust DoA Estimation for Underwater Sensor Arrays

open access: yesSensors, 2023
The direction-of-arrival (DoA) estimation algorithms have a fundamental role in target bearing estimation by sensor array systems. Recently, compressive sensing (CS)-based sparse reconstruction techniques have been investigated for DoA estimation due to ...
Umar Hamid   +2 more
doaj   +1 more source

Underwater detection of dangerous substances: status the SABAT project [PDF]

open access: yes, 2017
The Neutron Activation Analysis (NAA) plays an exceptional role in the modern nuclear engineering, especially in detection of hazardous substances. However, in the aquatic environment, there are still many problems to be solved for effective usage of ...
Moskal, P.   +5 more
core   +2 more sources

A Node-Based Method for SLAM Navigation in Self-Similar Underwater Environments: A Case Study

open access: yesRobotics, 2017
This work deals with the development of a node-based monocular visual methodology for autonomous vehicle navigation which has the goal of exploring unknown regions of the sea bottom with a posterior safe revisiting of them.
Emanuel Trabes, Mario Alberto Jordan
doaj   +1 more source

Optimized Environment Exploration for Autonomous Underwater Vehicles [PDF]

open access: yes2018 IEEE International Conference on Robotics and Automation (ICRA), 2018
Achieving full autonomous robotic environment exploration in the underwater domain is very challenging, mainly due to noisy acoustic sensors, high localization error, control disturbances of the water and lack of accurate un- derwater maps. In this work we present a robotic exploration algorithm for underwater vehicles that does not rely on prior ...
Vidal, Eduard   +3 more
openaire   +1 more source

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