Results 1 to 10 of about 196,454 (289)

Use of seismic attributes for sediment classification

open access: yesThe Journal of Engineering, 2015
A study to understand the relationships between seismic attributes extracted from 2D high-resolution seismic data and the seafloor's sediments of the surveyed area.
Fabio Radomille Santana   +1 more
doaj   +2 more sources

Sub-Bottom Sediment Classification Using Reliable Instantaneous Frequency Calculation and Relaxation Time Estimation

open access: yesRemote Sensing, 2021
The shift in IF (instantaneous frequency) series and the corresponding relaxation time have the potential to characterize sediment properties. However, these attributes derived from SBP (sub-bottom profiler) data are seldom used for offshore site ...
Shaobo Li   +3 more
doaj   +1 more source

Automatic Marine Sub-Bottom Sediment Classification Using Feature Clustering and Quality Factor

open access: yesJournal of Marine Science and Engineering, 2023
It has been proven that the quality factor (Q) is important for marine sediment attenuation attribute representation and is helpful for sediment classification.
Zaixiang Zong   +3 more
doaj   +1 more source

Water motion characteristics and water damping correction in gap between ship-to-ship system

open access: yesZhongguo Jianchuan Yanjiu, 2023
ObjectivesThis study seeks to correct the distortion of results caused by the inviscid-flow assumption when potential flow theory is used to calculate a two-ship floating system with a small gap, and analyze the motion response characteristics of the gap
Liqin LIU   +4 more
doaj   +1 more source

Optimizing the Sediment Classification of Small Side-Scan Sonar Images Based on Deep Learning

open access: yesIEEE Access, 2021
Acoustic seabed classification (ASC) is a fast and large-scale seabed sediment survey method. In particular, combining it with an automated classifier can theoretically achieve fast automatic seabed sediment classification.
Xiaoming Qin   +3 more
doaj   +1 more source

Sediment Classification of Acoustic Backscatter Image Based on Stacked Denoising Autoencoder and Modified Extreme Learning Machine

open access: yesRemote Sensing, 2020
Acoustic backscatter data are widely applied to study the distribution characteristics of seabed sediments. However, the ghosting and mosaic errors in backscatter images lead to interference information being introduced into the feature extraction ...
Ping Zhou   +4 more
doaj   +1 more source

A Novel Acoustic Sediment Classification Method Based on the K-Mdoids Algorithm Using Multibeam Echosounder Backscatter Intensity

open access: yesJournal of Marine Science and Engineering, 2021
The modern discrimination of sediment is based on acoustic intensity (backscatter) information from high-resolution multibeam echo-sounder systems (MBES).
Xiaochen Yu   +4 more
doaj   +1 more source

Analysis on Effective UAS Survey Conditions for Classification of Coastal Sediments

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
This study aims to introduce effective unmanned aerial system (UAS) survey conditions for coastal sediment classification, including muddy sand, sand, gravel, and shells in a tidal flat area.
Hyesu Kim   +5 more
doaj   +1 more source

ASSESSMENT OF MULTIBEAM BACKSCATTER TEXTURE ANALYSIS FOR SEAFLOOR SEDIMENT CLASSIFICATION [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Recently, there have been many debates to analyse backscatter data from multibeam echosounder system (MBES) for seafloor classifications. Among them, two common methods have been used lately for seafloor classification; (1) signal-based classification ...
S. A. Samsudin, R. C. Hasan
doaj   +1 more source

Small-Sample Seabed Sediment Classification Based on Deep Learning

open access: yesRemote Sensing, 2023
Seabed sediment classification is of great significance in acoustic remote sensing. To accurately classify seabed sediments, big data are needed to train the classifier.
Yuxin Zhao   +4 more
doaj   +1 more source

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