Results 191 to 200 of about 336,461 (224)

Sonar array characterization, experimental results

IEEE Journal of Oceanic Engineering, 1998
Measurements in the Levantine Sea with a seismic-type array [i.e., the high-frequency array (27 wavelengths at 348 Hz), the mid-frequency array (27 wavelengths at 175 Hz), and the low-frequency array (21 wavelengths at 58 Hz)] were found to have on average results within 1 dB of the theoretical signal gain.
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Processing techniques for circular sonar arrays

6th International Conference on Electronic Engineering in Oceanography, 1994
Briefly reviews the properties of modally-excited circular and cylindrical arrays and their application to sonar systems. The authors present the basis of two new techniques, namely: (i) sectoral phase modes, which are directional patterns with the same spatial variation of phase as phase modes, allowing direction finding with improved immunity to ...
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Adaptive motion compensation in sonar array processing.

2006
In recent years, sonar performance has mainly improved via a significant increase in array ap-erture, signal bandwidth and computational power. This thesis aims at improving sonar array processing techniques based on these three steps forward. In applications such as anti-submarine warfare and mine hunting motion of the sonar needs to be accounted for.
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Striation-Based Beamforming for Active Sonar With a Horizontal Line Array

Journal of the Acoustical Society of America, 2012
Daniel Rouseff
exaly  

A Numerical Method for Analyzing the Influence of Underwater Vehicle Flow Field on Dynamic Behavior of Towed Sonar Cable Array

Ocean Engineering, 2019
Xiaoxu Du
exaly  

Sonar Array Screens

2008
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Hydrodynamic Modelling of Towed Array Sonars

Warship 87 - Anti-submarine Warfare, 1987
R N Andrew, P W Bull, S L Smith
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Sonar Sequences From Costas Arrays and the Best Known Sonar Sequences With Up to 100 Symbols

IEEE Transactions on Information Theory, 1993
R A Games, O Moreno, H Taylor
exaly  

Broadband 3-D Sonar System Using a Sparse Array for Indoor Navigation

IEEE Transactions on Robotics, 2013
Andre Boen, Jan Steckel
exaly  

Adaptive Beamforming Applied to a Cylindrical Sonar Array Using an Interpolated Array Transformation

IEEE Journal of Oceanic Engineering, 2012
Andreas Austeng, Ann E A Blomberg
exaly