Results 131 to 140 of about 5,081,602 (245)

Quantifying Deep Ocean Methane Along the Central Chilean Margin

open access: yesGeophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Cold seeps are dynamic seafloor environments that provide conduits for methane (CH4) to be transferred from marine sediments to the global ocean and, in shallow settings, the atmosphere. These seeps are ubiquitous along continental margins yet their spatial extent and impact on the marine carbon cycle are poorly constrained.
Scott T. Wieman   +10 more
wiley   +1 more source

The Multivariate Normal Inverse Gaussian distribution: EM-estimation and analysis of synthetic aperture sonar data [PDF]

open access: yes, 2004
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 likelihood function, parameter estimation
Øigård, Tor Arne   +2 more
core  

Short-Range Sonar Development [PDF]

open access: yes, 2011
Our project involves the development of a short-range detection sonar system using Matlab signal processing techniques. Currently, the necessary equipment has been researched and purchased, and the preliminary work on output signal creation, transmission,
McGuffey, Alex, LaRue, Matthew
core  

Bispectral analysis of heart rate variability signal

open access: yes, 2002
11th European Signal Processing Conference, EUSIPCO 2002 --3 September 2002 through 6 September 2002 -- --This article explores the potential of third-order statistics to analysis of heart rate variability (HRV) signal. Bispectral analysis of short-term
Saliu S., Birand A., Kudaiberdieva G.
core   +1 more source

Contributions to independent component analysis, sensor array and complex valued signal processing [PDF]

open access: yes, 2010
Array and multichannel signal processing techniques are key technologies in wireless communications, radar, sonar and biomedical systems. In array signal processing, signals from multiple sources arrive simultaneously at a sensor array, so that each ...
Ollila, Esa
core  

Digital mono-pulse method in cylindrical antenna

open access: yesArchives of Acoustics, 2014
The article presents a method designed to improve the accuracy of cylindrical antenna multi-beam sonar performance. The method is based on the mono-pulse method used in radars and sonars.
W. Leśniak   +4 more
doaj  

Sonar Signal Processing Based On Cots Components

open access: yes, 2006
Publication in the conference proceedings of EUSIPCO, Florence, Italy ...
openaire   +2 more sources

Sonar Transducer Characteristics for Underwater Detection;

open access: yes, 2014
This paper presents the results of a study on sonar transducer characteristics for detection and quantification purpose. The main objectives was to provide Sonar tool for the evaluation of underwater target. The echo signal of the underwater target using
M. Manik, Henry
core  

A thermophone-based FM sonar for airborne ultrasonic sensing under drone flight noise. [PDF]

open access: yesSci Rep
Yamada Y   +5 more
europepmc   +1 more source

Novel implementation technique for a wavelet-based broadband signal detection system [PDF]

open access: yes
This thesis reports on the design, simulation and implementation of a novel Implementation for a Wavelet-based Broadband Signal Detection System. There is a strong interest in methods of increasing the resolution of sonar systems for the detection of ...
Cheng, Sheng
core  

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