Results 91 to 100 of about 594,002 (213)
, 2014 This paper is dedicated to the work of Pieter Schippers and gives an overview of his achievement in sonar performance modelling over his career. This publication is the last of a long list, many of which published at UDT [1-5].
Schippers, P. +2 more
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A Fully Complex-Valued Underwater Acoustic Signal Enhancement Model for Passive Sonar Systems
IEEE Open Journal of Signal ProcessingPassive sonar systems offer stealth and low-energy consumption advantages while facing highly complex signal conditions. Underwater acoustic signal (UWAS) enhancement for passive sonar systems aims to improve the quality of vessel-radiated signals ...
Zhengzhe Zhang +4 more
doaj +1 more source
SELF-SUPERVISED PRE-TRAINING FOR PASSIVE SONAR
This study explores the effectiveness of self-supervised learning techniques in automated ship detection using passive sonar data. Passive sonar offers rich acoustic signatures that are valuable for ship detection, yet much of this data remains unlabeled
Pelham, James S.
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Active sonar performance modelling for Doppler-sensitive pulses
, 2021 Accurate sonar performance modelling is essential to predict likely detection ranges that can be obtained by employing active anti-submarine warfare sonars. Reverberation forms an important source of interference for active sonar performance, the effects
Prior, M.K., Colin, M., Hartstra, I.E.
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Perceptual strategies in active and passive hearing of neotropical bats [PDF]
, 2008 Basic spectral and temporal sound properties, such as frequency content and timing, are evaluated by the auditory system to build an internal representation of the external world and to generate auditory guided behaviour. Using echolocating bats as model
Goerlitz, Holger R.
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, 2012 Item does not contain fulltextHet SoNaR-project is een project dat gefinancierd wordt in het kader van het Nederlands-Vlaams STEVIN-programma. Het project beoogt de aanleg van een groot corpus (minimaal 500 miljoen woorden) geschreven Nederlands.
et al., Oostdijk, N.H.J.
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Killer whale presence in relation to naval sonar activity and prey abundance in northern Norway
, 2013 In this study, retrospective data on naval sonar activity and prey abundance were correlated with killer whale sightings within a fjord basin in northern Norway. In addition, passive acoustic and visual marine mammal surveys were conducted before, during,
Kvadsheim, P.H. +3 more
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Methods in Ecology and EvolutionPassive acoustic recording is a cost‐effective method for monitoring vocal animals. Within this field, there is an increasing focus on automated detection algorithms for counting calls and estimating call density (in space and time).
Brian S. Miller +7 more
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Digital mono-pulse method in cylindrical antenna
Archives 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
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