Results 31 to 40 of about 46,415 (246)

UAV-Derived Multispectral Bathymetry

open access: yesRemote Sensing, 2020
Bathymetry is considered an important component in marine applications as several coastal erosion monitoring and engineering projects are carried out in this field.
Lorenzo Rossi   +2 more
doaj   +1 more source

Numerical modeling and simulation technique in time-domain for multibeam echo sounder

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2018
A Multibeam Echo Sounder (MBES) is commonly used for rapid seafloor mapping. We herein present a time-domain integrated system simulation technique for MBES development. The Modeling and Simulation (M&S) modules consist of four parts: sensor array signal
Donghwan Jung, Jeasoo Kim, Gihoon Byun
doaj   +1 more source

A Novel Cone Model Filtering Method for Outlier Rejection of Multibeam Bathymetric Point Cloud: Principles and Applications

open access: yesSensors, 2023
The utilization of multibeam sonar systems has significantly facilitated the acquisition of underwater bathymetric data. However, efficiently processing vast amounts of multibeam point cloud data remains a challenge, particularly in terms of rejecting ...
Xiaoyang Lv   +3 more
doaj   +1 more source

Discovering the Fine-Scale Morphology of the Gulf of Cádiz: An Underwater Imaging Analysis

open access: yesJournal of Marine Science and Engineering, 2022
The dense and deep water flow that leaves the Mediterranean Sea to the Atlantic flows through the upper and middle slope of the Gulf of Cádiz as a powerful bottom stream that models and interacts with bathymetry.
Raúl Jiménez-Romero   +4 more
doaj   +1 more source

Research on the Optimization of Multibeam Bathymetry Survey Line Layout Based on Simulated Annealing Algorithm

open access: yesHighlights in Science Engineering and Technology
Multibeam bathymetry systems are widely used in water depth measurement, and their principle is based on the propagation characteristics of sound waves in water. The system has multiple advantages, such as high resolution, high accuracy, wide measurement
Yingminhui Xiao
semanticscholar   +1 more source

Maximum A Posteriori Resampling of Noisy, Spatially Correlated Data [PDF]

open access: yes, 2006
In any geologic application, noisy data are sources of consternation for researchers, inhibiting interpretability and marring images with unsightly and unrealistic artifacts. Filtering is the typical solution to dealing with noisy data.
Calder, Brian R.   +2 more
core   +2 more sources

Bathymetry and Geomorphology of Shelikof Strait and the Western Gulf of Alaska

open access: yesGeosciences, 2019
We defined the bathymetry of Shelikof Strait and the western Gulf of Alaska (WGOA) from the edges of the land masses down to about 7000 m deep in the Aleutian Trench.
Mark Zimmermann   +2 more
doaj   +1 more source

Sources and Impacts of Bottom Slope Uncertainty on Estimation of Seafloor Backscatter from Swath Sonars

open access: yesGeosciences, 2019
Seafloor backscatter data from multibeam echosounders are now widely used in seafloor characterization studies. Accurate and repeatable measurements are essential for advancing the success of these techniques.
Mashkoor Malik
doaj   +1 more source

A Crossover Adjustment Method Considering the Beam Incident Angle for a Multibeam Bathymetric Survey Based on USV Swarms

open access: yesJournal of Marine Science and Engineering
Multibeam echosounder systems (MBESs) are widely used in unmanned surface vehicle swarms (USVs) to perform various marine bathymetry surveys because of their excellent performance. To address the challenges of systematic error superposition and edge beam
Qiang Yuan   +3 more
doaj   +1 more source

Improved Arctic Ocean Bathymetry Derived From DTU17 Gravity Model

open access: yesEarth and Space Science, 2019
The existing bathymetry map of the Arctic is a compilation of ship soundings and digitized contours. Due to the presence of all‐year sea ice, costly operations and political restrictions, dense and full coverage of the Arctic is not possible, leaving ...
Adili Abulaitijiang   +2 more
doaj   +1 more source

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