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Measurement and Modeling of Narrowband Channels for Ultrasonic Underwater Communications
2016
Sensors
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Fading in underwater channels has been previously measured and modeled in the audio band. However, there have been few attempts to study it at ultrasonic frequencies. ...
In this paper, a campaign of measurements of ultrasonic underwater acoustic channels in Mediterranean shallow waters conducted by the authors is presented. ...
The data analysis, fading modeling and capacity estimation were conducted by ...
doi:10.3390/s16020256
pmid:26907281
pmcid:PMC4801632
fatcat:x3zrhwlxcrdaxmilb6vbpv7lui
XXXIV Symposium on Hydroacoustics Jastarnia, Poland, May 23 – 26, 2017
2017
Archives of Acoustics
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The proposed approach allows detection of pulses of unknown parameters, which may be used in passive hydrolocation or jamming detection in underwater communication. ...
Inertial Sensors Applications in Underwater Measurements Bikonis Krzysztof, Technological progress have made the use of remotely controlled objects moving on the surface and underwa-Unauthenticated Download ...
The paper presents the results of narrowband and onethird-octave frequency analyzes of remote-controlled surface and underwater vehicles. ...
doi:10.1515/aoa-2017-0058
fatcat:erjvspfxg5fkpmnu7y6skvzgf4
An Airborne Sonar System for Underwater Remote Sensing and Imaging
2020
IEEE Access
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The limited number of channels currently feasible for multi-point LDVs cannot provide sufficient spatial sampling of the underwater acoustic signals for large-scale imaging. ...
Many works have studied the generation of an underwater acoustic source through a noncontact manner for applications including communication and sensing [13] - [16] , [31] . ...
.: An Airborne Sonar System for Underwater Remote Sensing and Imaging The first term of the Green's Function in (16) accounts for the downward propagating wave while the second term realizes the reflected ...
doi:10.1109/access.2020.3031808
fatcat:gmh6yommwfbhdf6n6zagl3cyri
Challenges and implications of using ultrasonic communications in intra-body area networks
2012
2012 9th Annual Conference on Wireless On-Demand Network Systems and Services (WONS)
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Acoustic waves are the transmission technology of choice for underwater communications, since they are known to propagate better than their RF counterpart in media composed mainly of water. ...
Then, we discuss future research challenges for ultrasonic networking of intra-body devices at the physical, medium access and network layers of the protocol stack. ...
Ultrasonic Transducers To accurately model the ultrasonic communication channel in tissues we need to understand how propagation parameters are affected by the characteristics of the transmitting and receiving ...
doi:10.1109/wons.2012.6152227
dblp:conf/wons/GalluccioMPS12
fatcat:kqpnp6aby5cpfhkgcdmyx3gtpu
A Software-Defined Ultrasonic Networking Framework for Wearable Devices
2017
IEEE/ACM Transactions on Networking
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We contend that this is not the only possible approach, and we introduce U-Wear, the first networking framework for wearable medical devices based on ultrasonic communications. ...
Index Terms-Body area networks, body sensor networks, wearable medical devices, ultrasonic communications and networking, acoustic communications and networking. 1063-6692 ...
This feature makes GMSK the signaling scheme of choice for narrowband communications in the near-ultrasonic frequency range based on COTS speakers and microphones. ...
doi:10.1109/tnet.2016.2616724
fatcat:j4ome4cjrrbt7iu7dyomylitni
Bioinspired metagel with broadband tunable impedance matching
2020
Science Advances
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Furthermore, we experimentally show that the metagel device offers efficient implementation in broadband underwater ultrasound detection with the benefit of being soft and tunable. ...
However, existing design of acoustic impedance matching, which extends exactly by a quarter wavelength, sets a fundamental limit of narrowband transmission. ...
Data and materials availability: All data needed to evaluate the conclusions in the paper are present in the paper and/or the Supplementary Materials. ...
doi:10.1126/sciadv.abb3641
pmid:33127672
fatcat:l3qwxt4doffwzppobogz7likxu
Software-Defined Ultrasonic Communication System with OFDM for Secure Video Monitoring
2022
IEEE Access
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Also, pipelines and chemical containers have metal structures that can be used as channels for ultrasonic communications. ...
In this paper, we investigate the architecture of a reconfigurable softwaredefined ultrasonic communication (SDUC) platform that can make use of the complete channel bandwidth for real-time video transmission ...
Most advancements in ultrasonic communication are made for underwater applications [6] . ...
doi:10.1109/access.2022.3168706
fatcat:5e6tfpcxqzbsvpx76h4e6dzkwm
Compact Elliptical UWB Antenna for Underwater Wireless Communications
2021
Micromachines
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However, previous designs of similar work for underwater communications were very complicated, uneasy to fabricate, and large. ...
The increasing needs of free licensed frequency bands like Industrial, Scientific, and Medical (ISM), Wireless Local Area Network (WLAN), and 5G for underwater communications required more bandwidth (BW ...
Acknowledgments: The authors would like to express their Gratitude to the Ministry of Education and the deanship of scientific research-Najran University-Kingdom of Saudi Arabia for their financial and ...
doi:10.3390/mi12040411
pmid:33917167
pmcid:PMC8067856
fatcat:5ppr3e7zjfct7lox4567samrda
Cross-Medium Photoacoustic Communications: Challenges, and State of the Art
2022
Sensors
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Particularly it has been conventionally assumed that a surface node will be deployed to act as a relay using acoustic links for underwater nodes and radio links for air-based communication. ...
While numerous studies have been dedicated to tackling the challenges for underwater communication, little attention has been paid to effectively interfacing the underwater networks to remote entities. ...
Thus, modeling the acoustic communication channel in underwater configuration has been the target of multiple studies where the effect of Sound Speed Profile (SSP) onto the propagating acoustic signal ...
doi:10.3390/s22114224
pmid:35684851
fatcat:25vasivpsncthmhysdoo7zlt7u
Multi-Media and Multi-Band Based Adaptation Layer Techniques for Underwater Sensor Networks
2019
Applied Sciences
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In the last few decades, underwater communication systems have been widely used for the development of navy, military, business, and safety applications, etc. ...
For the channel selection mechanism, two phases are involved: 1. Finding the distance of near and far nodes using Manhattan method, and 2. ...
By dividing the wide band frequency selective channel into narrowband smooth fading sub channels, OFDM is more robust in terms of frequency fading. ...
doi:10.3390/app9153187
fatcat:upz6pxry6fc6fnuo3qa6nupkfq
Assessment of Wide-Sense Stationarity of an Underwater Acoustic Channel Based on a Pseudo-Random Binary Sequence Probe Signal
2020
Applied Sciences
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The performances of Underwater Acoustic Communication (UAC) systems are strongly related to the specific propagation conditions of the underwater channel. ...
The results are similar, and thus, it is possible to assess if the UAC channel can be modelled as a WSS stochastic process without the need for TVIR estimation. ...
A trend-stationary channel model was proposed in [12] for underwater communication system. ...
doi:10.3390/app10041221
fatcat:dac2eyt5czfydj6easeuwly7za
Ultrasonic networking for E-health applications
2013
IEEE wireless communications
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Two major classes of channel models are typically considered, i.e., • Statistical models • Deterministic propagation models Statistical models are typically based on measurement data, while deterministic ...
ULTRASONIC CHANNEL MODELING The first step towards the design of high-performance ultrasonic networked systems is to characterize in detail the ultrasonic propagation channel in tissues -for which, unfortunately ...
doi:10.1109/mwc.2013.6590053
fatcat:4okve343zrbl7lbofcxx3c6rqi
Using Fast Frequency Hopping Technique to Improve Reliability of Underwater Communication System
2020
Applied Sciences
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The test results obtained for three channels of different lengths are discussed. ...
Acoustic underwater communication systems designed to work reliably in shallow coastal waters must overcome major limitations such as multipath propagation and the Doppler effect. ...
Acknowledgments: Special thanks to Iwona Kochańska and Krzysztof Liedtke for technical support in experimental tests.
Conflicts of Interest: The author declares no conflict of interest in this work. ...
doi:10.3390/app10031172
fatcat:vtqgd7hecfforkwlvh2a4lavqm
Analysis of order-statistic CFAR threshold estimators for improved ultrasonic flaw detection
1992
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
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Ultrasonic pulse+xho measurement schematic of steel blocks and the micrographs of the two steel specimens used for experimental studies. ...
Adaptive threshold performance for OS-, TM-, and CA-CFAR detectors for (a) moderate and (b) extreme censoring using Data 111 with PFA =
PULSE-ECHO ULTRASONIC TYPE 1018 STEEL MEASUREMENT SYSTEM SPECIMEN ...
Professor and Director of the Ultrasonic Information Processing Laboratory. ...
doi:10.1109/58.156180
pmid:18267673
fatcat:akgcptkcmve6falxswj4jh4dui
Toward virtual biopsy through an all fiber optic ultrasonic miniaturized transducer: a proposal
2003
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
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Created by The Institute of Electrical and Electronics Engineers (IEEE) for the benefit of humanity. ...
channels ........Channel allocation ........Channel capacity ........Channel estimation ........Channel models ........Channel spacing ........Channel state information ........Gaussian channels ..... ...
doi:10.1109/tuffc.2003.1244749
fatcat:l3jre4etsvcqzfyz2jqggji3gy
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