Results 131 to 140 of about 46,952 (245)
Sonar Equations for Planets and Moons
, 2015 A set of equations to describe the performance of sonar systems, collectively known as the “sonar equations”, was developed during and after the Second World War.
Ainslie, M.A., Leighton, T.G.
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Naval sonar disrupts foraging in humpback whales
, 2016 Modern long-range naval sonars are a potential disturbance for marine mammals and can cause disruption of feeding in cetaceans. We examined the lunge-feeding behaviour of humpback whales Megaptera novaeangliae before, during and after controlled exposure
Curé, C. +8 more
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Potential for population-level disturbance by active sonar in herring
, 2014 For conservation purposes, it is important to evaluate potential population consequences of noise disturbance. Based on maximum reported sound levels of no response to sonar, a mathematical model is used to predict the potential risk to the population of
Kvadsheim, P.H. +2 more
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Sonar target enhancement by shrinkage of incoherent wavelet coefficients
, 2014 Background reverberation can obscure useful features of the target echo response in broadband low-frequency sonar images, adversely affecting detection and classification performance.
Hunter, A.J., Vossen, R. van
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MSPOT a performance optimisation tool for ASW sonar
, 2012 Several navies are operating or procuring low-frequency active sonar systems (LFAS) as the primary part of their ASW capability. Since LFAS is a relatively new sensor with a performance strongly depending on environmental conditions, the proper ...
Beerens, S.P., Benders, F.P.A.
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Single-Beam Sonar Motion Deformation Compensation and Localization Method for Underwater Robots in Confined Waters. [PDF]
Sensors (Basel)Ding T, Xu Z, Liu X.
europepmc +1 more source
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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A Variational Bayesian Constrained EKF for Sonar-Based Underwater Target Tracking in Shallow Water. [PDF]
Sensors (Basel)Zhou H +5 more
europepmc +1 more source
, 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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Echo- and Image-Domain Fusion for Micro-Leak Detection and Localization in Subsea Gas Pipelines. [PDF]
Sensors (Basel)Liu H, Li J, Jiang X, Luo Y.
europepmc +1 more source