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Novelty detection in passive sonar systems using a kernel approach
2017 13th International Conference on Natural Computation, Fuzzy Systems and Knowledge Discovery (ICNC-FSKD), 2017In naval warfare operations, several techniques have been developed for passive sonar signal detection and classification. Sonar systems operate over very noisy conditions and, in modern warfare scenario, it might be necessary to classify ships that were not available for the classifier training process.
Natanael Nunes de Moura Junior +1 more
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An Introduction to Adaptive Processing in a Passive Sonar System
1977In a sonar system the carrier frequencies and system bandwidths are such that, taken together with the rapid reduction in size and cost of computer components, complicated signal processing in real time becomes viable.
J. W. R. Griffiths, J. E. Hudson
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A Passive Sonar System for Searching Acoustic Beacons in Deep Sea
OCEANS 2007, 2007Authors developed a passive sonar system for searching rocket boosters with acoustic beacons, which will be launched by JAXA with H2A rocket, detached from the rocket, and sink under deep sea. The system consists of an underwater unit that can be operated at 6500 m deep and an onboard unit with signal processing and display functions.
Junichi Kojima +2 more
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Design and implementation of passive sonar system based on gigabit ethernet
2012 International Conference on Computer Science and Information Processing (CSIP), 2012A novel array system architecture is proposed to satisfy the need of new technology revolution in this paper. Cascaded Switched Ethernet based data link is used to acquire data. The implementation of the prototype is discussed in detail and the scheme's feasibility is verified by the lake trial results.
null Xuezhi Wang +4 more
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Distributed multi-target tracking in clutter for passive linear array sonar systems
2017 20th International Conference on Information Fusion (Fusion), 2017In a Y-shaped passive linear array sonar (PLAS) system, three sensor legs are configured and report bearings-only measurements, which are complicated due to bearing-ambiguity. As many ghost targets exist, multi-target tracking using a PLAS system is a challenging problem, especially when target miss-detection and clutter are also considered.
Qian Zhang 0048 +2 more
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Implementation of adaptive processing schemes in active and passive sonar systems
The Journal of the Acoustical Society of America, 1996This paper details the implementation of adaptive processing schemes with near-instantaneous convergence in integrated active–passive sonar applications. The adaptive schemes of this investigation include a generalized sidelobe canceller (GSC), a coherent broadband adaptive algorithm based on a multiple steered covariance matrix and the MVDR method ...
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Novelty detection in passive SONAR systems using support vector machines
2015 Latin America Congress on Computational Intelligence (LA-CCI), 2015In naval warfare operations, several techniques have been developed for passive sonar signal detection and classification. Sonar systems operate over very noisy conditions and, eventually have to be identified new classes without loosing much efficiency to classes for which both, the sonar operator (OS) and a given decision support system have been ...
Natanael Nunes de Moura +1 more
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Development of a passive sonar system for localization of an underground sound origin
The Journal of the Acoustical Society of America, 1998The aim of the work described in this paper is to develop a complex underground acoustic system which detects and localizes the origin of an underground hammering sound using an array of hydrophones located about 100 m underground. Three different methods for the sound localization will be presented, a time-delay method, a power-attenuation method and ...
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Target detection using a neural network based passive sonar system
International Joint Conference on Neural Networks, 1989A neural-network (NN)-based system for the passive detection of targetlike signals in underwater acoustic fields is being developed. The input to the NN is an intensity modulated signal, which is a measure of the power of the received signal plus noise at different frequencies as time varies.
null Khotanzad, null Lu, null Srinath
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Theory and Implementation of Advanced Signal Processing for Active and Passive Sonar Systems
2000Several review articles on sonar system technology have provided a detailed description of the mainstream sonar signal processing functions along with the associated implementation considerations. This chapter attempts to extend the scope of these articles by introducing an implementation effort of nonmainstream processing schemes in real-time sonar ...
Stergios Stergiopoulos, Geoffrey Edelson
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