Results 91 to 100 of about 336,461 (224)

FPGA-Based Sonar Processing

, 1998
This paper presents the application of time-delay sonar beamforming and discusses a multi-board FPGA system for performing several variations of this beamforming method in real-time for realistic sonar arrays. Additionally, we show that our proposed FPGA
Paul Graham, Brent Nelson
core   +1 more source

Parametric Study and Experimental Validation of Acoustic Leaky Wave Antenna in Spatial Localization

IEEE Access
Acoustic signals, which have been utilized for decades in the spatial localization of objects, have found applications in fields as diverse as sonar for underwater navigation, communication, and object detection.
Alejandro Fernandez-Garrido, Maria Campo-Valera, Elena Abdo-Sanchez, Ruben Pico, Antonio-Javier Garcia-Sanchez, Rafael Asorey-Cacheda   +5 more
doaj   +1 more source

Pentagram Arrays: A New Paradigm for DOA Estimation of Wideband Sources Based on Triangular Geometry

Remote Sensing
Antenna arrays are used for signal processing in sonar and radar direction of arrival (DOA) estimation. The well-known array geometries used in DOA estimation are uniform linear array (ULA), uniform circular array (UCA), and rectangular grid array (RGA).
Mohammed Khalafalla, Kaili Jiang, Kailun Tian, Hancong Feng, Ying Xiong, Bin Tang   +5 more
doaj   +1 more source

ESTIMATION OF SIGNAL PARAMETERS FOR MULTIPLE TARGET LOCALIZATION [PDF]

ICTACT Journal on Communication Technology, 2014
Target detection and localization is an active research area due to its importance in a wide range of application such as biomedical and military applications.
X. Susan Christina, S. Ramya, S. Maheswari   +2 more
doaj  

SoNaR-1. Corpus van 1 miljoen woorden verrijkt met diverse semantische annotaties

, 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.
core  

The effects of sound propagation and avoidance behaviour on naval sonar levels received by cetaceans [PDF]

, 2012
The use of active sonar is deemed to be essential for naval operations, but its potential impact on marine life has raised concerns worldwide. In a risk-assessment framework, characterisation of risk of harm is accomplished by combining exposure ...
Wensveen, Paul J.
core  

Numerical Techniques for Efficient Sonar Bearing

, 2007
This article describes a numerical method that may be used to efficiently locate and track underwater sonar targets in the near-field, with both bearing and range estimation, for the case of very large passive ...
And Range Searching, A. J. Keane, D. J. Edwards   +2 more
core  

Multifrequency wideband sonar array [PDF]

, 2012
This paper describes of new approach to Multifrequency Wideband Arrays (MWA), applied piezocomposite technologies of the array elements. MWA operating in transmitting (Tx) and receiving (Rx) mode on two or three bands, requires state-of-the-art ...
Elminowicz, A., Zajączkowski, L., Lis, W.   +2 more
core  

SoNaR-500 STEVIN Nederlandstalig Referentiecorpus (corpus geschreven Nederlands, 500 miljoen woorden)

, 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.
core  

Anti-submarine warfare with continuously active sonar

, 2011
Existing surveillance sonar systems for anti-submarine warfare (ASW) use a pulsed sonar deployed at a low duty cycle. Continuously active sonar (CAS) is of special interest since the technique could provide better detection performance than conventional ...
Vossen, R. van, Spek, E. van der, Beerens, S.P.   +2 more
core