Search
Now showing items 1-10 of 28
A new method for underwater archaeological surveying using sensors and unmanned platforms
(2016)
As most of the world’s oceans are inaccessible to diving archaeologists, we must rely on advanced underwater technology and marine robotics to explore, map and investigate ship wrecks in these areas. New sensors and unmanned ...
The Multivariate Normal Inverse Gaussian distribution: EM-estimation and analysis of synthetic aperture sonar data
(2015)
The heavy-tailed Multivariate Normal Inverse Gaussian (MNIG)
distribution is a recent variance-mean mixture of a multivariate
Gaussian with a univariate inverse Gaussian distribution. Due to
the complexity of the ...
Bayesian seabed classification using angle-dependent backscatter data from multibeam echo sounders
(2014)
Acoustical seabed classification is a technology for mapping seabed sediments. Processed multibeam sonar data yield the variation of the seabed scattering strength with incidence angle, and this paper examines the effect ...
Wideband Synthetic Aperture Sonar Back Projection with Maximization of Wave Number Domain Support
(2017)
Wideband and widebeam synthetic aperture sonar (SAS) can provide information on the frequency- and aspect-dependent scattering in a scene. We suggest an approach to predict the quality of the sensor data over the available ...
Challenges in Seafloor Imaging and Mapping With Synthetic Aperture Sonar
(2011)
Synthetic aperture sonar (SAS) is emerging as an imaging technology that can provide centimeter resolution over hundreds-of-meter range on the seafloor. Although the principle of SAS has been known for more than 30 years, ...
The use of synthetic aperture sonar to survey seafloor massive sulfide deposits
(2015)
With the advent of advanced deep sea mining technology, seafloor mining is poised to begin on a
global scale. For the success of any mining operation, it is crucial that both the operators and
regulatory bodies possess ...
The Effect of Internal Wave-Related Features on Synthetic Aperture Sonar
(2015)
In October 2012, the Centre for Maritime Research and Experimentation (CMRE, La Spezia, Italy) conducted trials from the NATO research vessel (RV) Alliance, off Elba Island, Italy. During this trial, data were collected ...
A Radon-Transform-Based Image Noise Filter - With Applications to Multibeam Bathymetry
(2015)
This paper describes a linear-image-transform-based algorithm for reducing stripe noise, track line artifacts, and motion-induced errors in remote sensing data. Developed for multibeam bathymetry (MB), the method has also ...
Automatic detection of marine gas seeps using an interferometric sidescan sonar
(2016)
There is a significant need for reliable, cost-effective, and preferably automatic methods for detecting and monitoring marine gas seeps. Seeps at the seafloor may originate from natural sources including sediments releasing ...