Results 131 to 140 of about 1,765,935 (236)

High-Resolution Sonars: What Resolution Do We Need for Target Recognition?

EURASIP Journal on Advances in Signal Processing, 2010
Target recognition in sonar imagery has long been an active research area in the maritime domain, especially in the mine-counter measure context. Recently it has received even more attention as new sensors with increased resolution have been developed ...
Pailhas Yan, Petillot Yvan, Capus Chris
doaj  

Holographic sonar imaging via soft meta-structures

Autonomous underwater vehicles (AUVs) are used for underwater ranging, exploration, and communication. However, the limited space in AUVs restricts the number of array elements and imaging capability of sonar systems.
Fang, Nicholas X., Su, Xiaochun, Gao, Zhanyuan, Yang, Chen, Liu, Sheng, Zhang, Yu, Zhang, Fei, Wang, Zhenyu, Zhang, Jinhu, Dong, Erqian   +9 more
core   +1 more source

Adaptive Beamforming for Active Sonar Imaging.

, 2012
As of today, sonar imaging is the most effective means of documenting the subsea environment. Existing sonar imaging systems generally rely on conventional beamforming methods to form the image. While conventional beamformers are robust and simple, they leave many of the challenges of sonar imaging unresolved.
openaire   +2 more sources

Super-resolution phased array sonar imaging

, 2005
Includes bibliographical references (p. 101-102).This dissertation applies super-resolution signal processing alogrithms to image reconstruction for a multibeam phased array sonar.
Eccles, Etienne Frederick
core   +1 more source

Intelligent underwater mine detection using multi-backbone feature fusion with temporal attention-gated unit on side-scan sonar imaging. [PDF]

Sci Rep
Alakhtar R, Alsobhi H, Khawaja A, Alkhudhayr H, Binyamin SS, Ragab M.   +5 more
europepmc   +1 more source

Side looking sonar image quality assessment using reference targets

, 2018
Side-looking sonar systems, including side-scan sonar and synthetic aperture sonar, are widely used for seabed characterization. They also have applications in the detection and classification of objects on the seabed.
Beckers, A.L.D., Vossen, R. van, Velsen, A.L. van   +2 more
core  

Three-Dimensional Reconstruction and Visualization of Underwater Bridge Piers Using Sonar Imaging. [PDF]

Sensors (Basel)
Luo J, Jiang S, Zeng Y, Lai C.
europepmc   +1 more source

Side-scan sonar imaging data of underwater vehicles for mine detection. [PDF]

Data Brief
Pessanha Santos N, Moura R, Sampaio Torgal G, Lobo V, Neto MC.   +4 more
europepmc   +1 more source

Design, Fabrication, Characterization, and Simulation of AlN-Based Piezoelectric Micromachined Ultrasonic Transducer for Sonar Imaging Applications. [PDF]

Micromachines (Basel)
Chen W, Ma S, Lai X, Wang Z, Zhao H, Zha Q, Chiu Y, Jin Y.   +7 more
europepmc   +1 more source

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