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24.408  Articles
1 of 2.442 pages  |  10  records  |  more records»
In an active towed array sonar, it is important to find the optimal operation depth. Generally, the optimal depth can be chosen via numerical simulations for all sonar depths and this imposes great burdens of time and cost.In this paper, an efficient appr... see more

A Chirp sub-bottom sonar investigation was performed in the 150 km2 wideAugustaBasin, located in the eastern Sicily Ionian coast, a region repeatedly hit by strong earthquakes in historical time, with the end of identifying possible evidence of active tec... see more

Modern day combat warships are an integration of a large number of subsystems and components. Each of these systems communicates to a common combat management system. Anti-submarine warfare systems being an integral part of the combat management system, i... see more

Piezoelectric or magnetostrictive materials can be utilised as active materials for electroacoustic underwater transducers. Piezoceramic materials gained edge over the conventional magnetostrictive materials during 1940s due to their unique electro-acoust... see more

The growing torpedo threat to ships and submarines demands effective countermeasures for defence. Detection, classification and localisation of an attacking torpedo is the first step towards launching effective countermeasures. Studies are on the rise to ... see more

Se presenta un sistema tipo sonar activo para medir la distancia a objetivos a corto alcance en aire o agua usando transductores acústicos de ultrasonido. Se pretende desarrollar un sistema de detección de especies acuáticas y la visualización del suelo m... see more

This work sought to study the models of acoustic signal propagation in marine environments according toopen literature currently available, by interpreting the different effects occurring during their propagationand their characteristic principal paramete... see more

A closely spaced set of high-resolution Chirp-Sonar and Sparker profiles and swath bathymetric data was acquired in 2013 for the I-AMICA Project off the Volturno River mouth (Southern Tyrrhenian Sea) by the Istituto per l’Ambiente Marino Costiero (I... see more

The surficial sediment distribution within Long Island Sound has been mapped and described using bottom samples, photography, and sidescan sonar, combined with information from the geologic literature. The distributions of sediment type and total organic ... see more

1 of 2.442 pages  |  10  records  |  more records»