Results 101 to 110 of about 5,081,602 (245)

Sonar Signal Enhancement Using Fractional Fourier Transform [PDF]

, 2005
In this paper we present an approach for signal enhancement of sonar signals. Work reported is based on sonar data collected by the Volume Search Sonar (VSS), as well as VSS synthetic data.
Trahan, Russell E., Barbu, Madalina, Kaminsky, Edit J.   +2 more
core  

Studies into the detection of buried objects (particularly optical fibres) in saturated sediment. Part 4: experimental investigations into the acoustic detection of objects buried in saturated sediment

, 2007
This report is the fourth in a series of five, designed to investigate the detection oftargets buried in saturated sediment, primarily through acoustical or acoustics-relatedmethods.
Evans, R.C.P.
core   +1 more source

Topology‐based Visual Analysis of Hydrothermal Plumes

Computer Graphics Forum, EarlyView.
Abstract Hydrothermal plumes are turbulent structures of intense heat and mineral smoke that rise and disperse into the deep ocean. Existing models generally characterize these systems as a single axisymmetric plume originating from a point source. However, this assumption breaks down in weakly venting, spatially distributed systems, where low‐flux ...
Adhitya Kamakshidasan, Tushar Jain, Karen Bemis, Valerio Pascucci   +3 more
wiley   +1 more source

Exploring pangolin rehabilitation practices and challenges in Africa and Asia

Conservation Science and Practice, EarlyView.
Wildlife rehabilitation is often overlooked in conservation. Pangolins rescued from wildlife trade, vehicle collisions, habitat destruction, and other human‐induced threats are sent to rehabilitation centers for recovery and release. This study provides baseline information on the rehabilitation of pangolins across Africa and Asia while simultaneously ...
Rodriguez Asael, Christina Hiller, Daniel J. Ingram   +2 more
wiley   +1 more source

SoNaR-1

, 2014
Item does not contain fulltextHet SoNaR-corpus is een tekstcorpus dat bestaat uit twee delen, nl. SoNaR-500 en SoNaR-1. SONAR-500 bevat meer dan 500 miljoen woorden tekst afkomstig uit uiteenlopende domeinen en genres.
Reynaert, M., Reynaert, Martin, Schuurman, Ineke, Clercq, O. De, Hoste, Veronique, van den Heuvel, Henk, Desmet, B., Hoste, V., Heuvel, H. van den, Desmet, Bart, De Clercq, Orphée, Reynaert, M.W.C., Oostdijk, Nelleke, Monachesi, P., Monachesi, Paola, Schuurman, I., Oostdijk, N.H.J.   +16 more
core  

Acoustic signal processing in passive sonar system with towed array [PDF]

, 2008
The aim of this document is to introduce acoustic signal processing in passive sonar system with towed array. The concept of the "acoustic signals processing" includes all possible operations on analogue signals such as amplifying, filtering, sampling ...
Rudnicki, M., Raganowicz, A., Schmidt, J.   +2 more
core  

Acoustic models and sonar systems

, 1993
Acoustic models are used extensively in simulating sonar-system performance. Lately, such models have assumed a still more important role as they are incorporated in the signal processing algorithms.
Porter, Michael B.
core   +1 more source

Underwater Small Target Classification Using Sparse Multi-View Discriminant Analysis and the Invariant Scattering Transform

Journal of Marine Science and Engineering
Sonar automatic target recognition (ATR) systems suffer from complex acoustic scattering, background clutter, and waveguide effects that are ever-present in the ocean.
Andrew Christensen, Ananya Sen Gupta, Ivars Kirsteins   +2 more
doaj   +1 more source

Examining the Impact of Derelict Pots on Blue Crab (Callinectes sapidus) Catch and Harvest Within a Recreational Fishery

Fisheries Management and Ecology, EarlyView.
ABSTRACT Derelict fishing gear can negatively affect marine ecosystems through mortality in coastal environments. This study explored the impact of derelict and active crab pots on recreational blue crab (Callinectes sapidus) catch rates and landings in a Mid‐Atlantic estuary by deploying experimental pots in four habitat strata within three sections ...
Randy J. Feris Serrano, Jennifer E. Repp, Kaylin M. Regan, Arthur C. Trembanis, Matthew J. Oliver, Edward A. Hale   +5 more
wiley   +1 more source

Unbiased Injection of Signal-Dependent Noise in Variance-Stabilized Range

, 2016
<p>The design, optimization, and validation of many image processing or image-based analysis systems often requires testing of the system performance over a dataset of images corrupted by noise at different signal-to-noise ratio regimes.
Vieira, Marcelo, Borges, Lucas, Foi, Alessandro   +2 more
core   +1 more source