Results 31 to 40 of about 17,614 (301)

Hyperspectral Sea Ice Image Classification Based on the Spectral-Spatial-Joint Feature with Deep Learning

open access: yesRemote Sensing, 2019
Sea ice is one of the causes of marine disasters. The classification of sea ice images is an important part of sea ice detection. The labeled samples in hyperspectral sea ice image classification are difficult to acquire, which causes minor sample ...
Yanling Han   +4 more
doaj   +1 more source

The Problem of the Instrument Stabilization During Hydrographic Measurements

open access: yesReports on Geodesy and Geoinformatics, 2016
Performing any measurement on watercraft is connected with many additional difficulties caused by the sea-environment. The most important is the problem of spatial stabilization of measurement systems, which are usually fastened to craft body. As soon as
Felski Andrzej   +2 more
doaj   +1 more source

Optimization of fairway design parameters: Systematic approach to manoeuvring safety

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2020
The article presents a systematic approach to design of marine navigation channels parameters resulting from manoeuvring and operational safety. Relations between the parameters of waterway system elements and the conditions of safe ship operation have ...
Stanisław Gucma, Paweł Zalewski
doaj   +1 more source

Research on Wavelet Singularity Detection Based Fault-Tolerant Federated Filtering Algorithm for INS/GPS/DVL Integrated Navigation System

open access: yesJournal of Applied Mathematics, 2014
Soft faults in navigation sensors will lead to the degradation of the accuracy and reliability of integrated navigation system. To solve this problem, a wavelet analysis and signal singularities based soft fault detection method are given out.
Jianhua Cheng   +4 more
doaj   +1 more source

Environment Potential Field Modeling for Ship Automatic Collision Avoidance in Restricted Waters

open access: yesIEEE Access, 2022
The accurate environment potential field (EPF) modeling method and highly efficient collision avoidance (CA) approach are key technologies for maritime autonomous surface ships (MASS).
Zhongxian Zhu   +3 more
doaj   +1 more source

Simulation Tool for Winter Navigation Decision Support in the Baltic Sea

open access: yes, 2022
This article presents a novel simulation tool for the analysis of winter navigation operations in the Baltic Sea in the context of the Finnish–Swedish Winter Navigation System (FSWNS). The aim of the tool is to simulate the performance of the FSWNS
Ketki Kulkarni   +7 more
core   +1 more source

An Adaptive Unscented Kalman Filtering Algorithm for MEMS/GPS Integrated Navigation Systems

open access: yesJournal of Applied Mathematics, 2014
MEMS/GPS integrated navigation system has been widely used for land-vehicle navigation. This system exhibits large errors because of its nonlinear model and uncertain noise statistic characteristics.
Jianhua Cheng   +4 more
doaj   +1 more source

Harmonised Portrayal of e-Navigation-related Information

open access: yes, 2013
A Guideline on the Harmonised Portrayal of e-Navigation-related Information was recently completed by IALA. The purpose of this Guideline is to provide guidance regarding the presentation and display of e-Navigation-related information.
Porathe, Thomas   +8 more
core   +1 more source

Kalman filter based team navigation for Multiple Unmanned Marine Vehicles [PDF]

open access: yes, 2008
In applications employing Multiple Unmanned Marine Vehicles (MUMVs), the navigation has a very great importance to guarantee formation preservation and collision avoidance. While single vehicles usually base their navigation on absolute measurements (GPS,
Jacobi, Marco   +11 more
core   +1 more source

Offshore Ship Detection in Foggy Weather Based on Improved YOLOv8

open access: yesJournal of Marine Science and Engineering
The detection and surveillance of ship targets in coastal waters is not only a crucial technology for the advancement of ship intelligence, but also holds great significance for the safety and economic development of coastal areas.
Shirui Liang   +4 more
doaj   +1 more source

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