Results 41 to 50 of about 4,672,975 (205)
International Journal of Distributed Sensor Networks, 2016 Energy-efficient data aggregation is important for underwater acoustic sensor networks due to its energy constrained character. In this paper, we propose a kind of energy-efficient data aggregation scheme to reduce communication cost and to prolong ...
Deqing Wang, Ru Xu, Xiaoyi Hu, Wei Su
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STLFM Signal Based Adaptive Synchronization for Underwater Acoustic Communications
IEEE Access, 2019 In underwater acoustic communications (UAC), signal synchronization plays a key role in the performance. It is usually performed using a known preamble transmitted prior to the data. However, the underwater acoustic (UWA) channel is characterized as time-
Fei Yuan +3 more
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The Impact of the Latest 3D Technologies on the Documentation of Underwater Heritage Sites [PDF]
, 2013 Documenting underwater cultural heritage is a challenging undertaking. Underwater environment is not a man’s natural habitat and special equipment and devices had to be invented so that he could enter and study this environment.
Kovačič, Rok +5 more
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Ship Radiated Noise Recognition Using Resonance-Based Sparse Signal Decomposition
Shock and Vibration, 2017 Under the complex oceanic environment, robust and effective feature extraction is the key issue of ship radiated noise recognition. Since traditional feature extraction methods are susceptible to the inevitable environmental noise, the type of vessels ...
Jiaquan Yan +4 more
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Laser based underwater communication systems [PDF]
2016 18th International Conference on Transparent Optical Networks (ICTON), 2016 We report on recent progress in the field of visible light communications including direct modulation of blue laser devices at data rates beyond 10 Gbit/s, and the transmission of 2.5 Gbit/s OOK data through water. We also discuss the advantages of operating with single mode laser devices and matched filtering at the receiver in the context of ...
Giuliano, Giovanni +5 more
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On the reliability of the Autosub autonomous underwater vehicle [PDF]
, 2003 As autonomous underwater vehicles (AUVs) enter operational service an assessment of their reliability is timely. Using the Autosub AUV as an example, several design issues affecting reliability are discussed, followed by an analysis of recorded faults ...
Stevenson, P. +8 more
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Covert underwater acoustic communications
The Journal of the Acoustical Society of America, 2010 Low probability of detection (LPD) communications are conducted at a low received signal-to-noise ratio (SNR) to deter eavesdroppers to sense the presence of the transmitted signal. Successful detection at intended receiver heavily relies on the processing gain achieved by employing the direct-sequence spread-spectrum (DSSS) technique.
Jun Ling +4 more
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Channel modeling for underwater optical communication [PDF]
2011 IEEE GLOBECOM Workshops (GC Wkshps), 2011 We consider in this paper channel modeling for underwater optical channels. In particular, we focus on the channel impulse response and quantify the channel time dispersion under different conditions of water type, link distance, and transmitter/receiver parameters.
Chadi Gabriel +4 more
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High-speed Underwater Wireless Optical Communication: Potential, Challenges, and Possible Solutions [PDF]
, 2017 Traditional underwater communication systems rely on acoustic modems due their reliability and long range. However their limited data rates, lead to the exploration of alternative techniques.
Alouini, Mohamed-Slim
core
Underwater Channel Characterization to Design Wireless Sensor Network by Bellhop [PDF]
, 2016 Acoustic underwater link due to low attenuation is employed for underwater sensor network (UWSN). Due to water changing physical properties and different environmental conditions, the sound propagation for every underwater channel are different.
Bahrami, Nima; Universiti Teknologi Malaysia +3 more
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