Results 81 to 90 of about 336,461 (224)

A Bayes factor high-frequency broadband active sonar discriminant expansion via depth invariant modes [PDF]

JASA Express Letters
A Bayes factor discriminant is constructed for active sonar detection of a scattering body in an underwater refractive environment about which there is some depth uncertainty.
Paul J. Gendron, Kenneth T. Bowers
doaj   +1 more source

Super-Resolution DOA Estimation for Multi Frequency Signals of Polarization Sensitive Array Based on Atomic Norm Minimization

IEEE Open Journal of Signal Processing
This paper presents a super-resolution direction-of-arrival (DOA) estimation framework for multi-frequency (MF) signals received by polarization-sensitive arrays, based on atomic norm minimization (ANM).
Xuejing Hu, Tao Chen, Haolin Xi, Nan Wang   +3 more
doaj   +1 more source

HYBRID AOA AND TDOA MEASUREMENTS BASED MULTI-SOURCE LOCALIZATION USING THE GENETIC ALGORITHM [PDF]

ICTACT Journal on Communication Technology
The multi-source localization in sensor array networks is a major challenge for radar and sonar. Recent advances in array signal processing techniques and hardware technologies have resulted in a significant increase in the accuracy of angle of arrival ...
Un-Il Kim, Hyok Kwak, Chol-Nam Om, Chun-Bom Pak   +3 more
doaj   +1 more source

Underwater detection, classification and localisation : Improving the capabilities of towed sonar arrays

, 2011
The end of the Cold War and the collapse of the Warsaw pact have resulted in a change of operational theatre for the naval forces of the North Atlantic Treaty Organisation (NATO). In particular, the focus of Anti Submarine Warfare forces has shifted from
Colin, M.E.G.D.
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Research on Dynamic Beamforming Methods for Uniform Circular Frequency Diverse Array Sonar

Journal of Marine Science and Engineering
Frequency diverse array (FDA) sonar achieves a range- and azimuth-dependent transmit beam by applying a small frequency increment to each transmitting element.
Weiye Liu, Yixin Yang
doaj   +1 more source

The Pieter Schippers story : Almost 40 years of developments in sonar performance modelling in the Netherlands

, 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., Colin, M.E.G.D., Beerens, S.P.   +2 more
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Application of the gold ring bundles for innovative non-redundant sonar systems

Archives of Acoustics, 2014
The paper involves techniques for configure linear, planar or three-dimensional spacetapered arrays of radar or sonar system, using novel designs based on the Perfect Combinatorial Sequencing Theory, namely the concept of Gold Ring Bundles (GRB)s for ...
V. Riznyk, O. Bandyrska, D. Skrybaylo-Leskiv   +2 more
doaj  

Cluster Computing Architectures and Algorithms for Passive Sonar Arrays

, 1997
This paper summarizes ongoing research and development efforts involving the design, modeling, simulation, experimentation, and analysis of distributed, parallel computing algorithms and architectures for autonomous sonar arrays.
W. Rosen, J. Markwell, L. Hopwood, A. George, R. Fogarty   +4 more
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Triple extended coprime array for single‐snapshot DoA estimation

Electronics Letters
The direction‐of‐arrival (DoA) estimation methods based on coprime array (CA) largely rely on having a sufficient number of snapshots. However, under single‐snapshot conditions typical of vehicle‐mounted imaging radar, CA‐based DoA estimation often ...
Tianyao Long, Lei Huang, Qiang Li, Wei Wang   +3 more
doaj   +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
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