scholarly journals KM3NeT acoustic positioning and detection system

2019 ◽  
Vol 216 ◽  
pp. 02006 ◽  
Author(s):  
Salvatore Viola
Keyword(s):  
Cherenkov Radiation ◽  
Detection System ◽  
Charged Particles ◽  
Positioning System ◽  
Atmospheric Neutrinos ◽  
Neutrino Telescopes ◽  
Strongly Connected ◽  
Radiation Induced ◽  
Better Than ◽  
Acoustic Positioning

In the Mediterranean Sea, the KM3NeT Collaboration is constructing a the deep-sea research infrastructure hosting next generation neutrino telescopes. In the KM3NeT telescopes the Cherenkov radiation induced by the secondary charged particles produced in the interaction of cosmic and atmospheric neutrinos within an effective volume between megaton and several cubic kilometers of water are detected by an array of thousands of photomultipliers. The capability of the telescope to determine the direction of secondary charged particles and to point back to the neutrino source is strongly connected to the accuracy on photomultipliers positions. In KM3NeT, the photomultiplier positions are continuously monitored by an acoustic positioning system, designed by the KM3NeT Collaboration to reach an accuracy of the photomultiplier positions better than 20 cm.

Design of Passive Acoustic Location System Based on Double Arrays

2012 ◽  
Vol 490-495 ◽  
pp. 1857-1861
Author(s):  
Li Qing Fang ◽  
Hong Kai Wang ◽  
Kai Chen
Keyword(s):  
High Performance ◽  
Value Engineering ◽  
Positioning System ◽  
Positioning Error ◽  
Single Base ◽  
Blind Area ◽  
Passive Acoustic ◽  
Locating System ◽  
Better Than ◽  
Acoustic Positioning

The biggest advantage passive acoustic positioning system based on single array is that it has high performance on orientation. However, its positioning error is usually larger. Locating based on multi-array not only gives more information to enhance the locating accurate, but also can eliminate the blind area generated by single array. So its locating performance is better than single-base array. In this paper, taking the system of double arrays for instance, built a passive acoustic positioning system, gave the plan of the system, and designed the tests to compare the accuracy between the single array and double arrays. According to the tests, it further verified that locating system based on double arrays has higher accuracy than the system of single array. And it also has high value engineering.

Sustainable Security for the Internet of Things Using Artificial Intelligence Architectures

2021 ◽  
Vol 21 (3) ◽  
pp. 1-22
Author(s):  
Celestine Iwendi ◽  
Saif Ur Rehman ◽  
Abdul Rehman Javed ◽  
Suleman Khan ◽  
Gautam Srivastava
Keyword(s):  
Internet Of Things ◽  
Detection System ◽  
Experimental Testing ◽  
Cyber Attacks ◽  
Internet Technology ◽  
The Internet ◽  
Business Operations ◽  
Private Data ◽  
The Internet Of Things ◽  
Better Than

In this digital age, human dependency on technology in various fields has been increasing tremendously. Torrential amounts of different electronic products are being manufactured daily for everyday use. With this advancement in the world of Internet technology, cybersecurity of software and hardware systems are now prerequisites for major business’ operations. Every technology on the market has multiple vulnerabilities that are exploited by hackers and cyber-criminals daily to manipulate data sometimes for malicious purposes. In any system, the Intrusion Detection System (IDS) is a fundamental component for ensuring the security of devices from digital attacks. Recognition of new developing digital threats is getting harder for existing IDS. Furthermore, advanced frameworks are required for IDS to function both efficiently and effectively. The commonly observed cyber-attacks in the business domain include minor attacks used for stealing private data. This article presents a deep learning methodology for detecting cyber-attacks on the Internet of Things using a Long Short Term Networks classifier. Our extensive experimental testing show an Accuracy of 99.09%, F1-score of 99.46%, and Recall of 99.51%, respectively. A detailed metric representing our results in tabular form was used to compare how our model was better than other state-of-the-art models in detecting cyber-attacks with proficiency.

Oliver Heaviside: an accidental time traveller

2018 ◽  
Vol 376 (2134) ◽  
pp. 20170448
Author(s):  
Paul J. Nahin
Keyword(s):  
Cherenkov Radiation ◽  
Charged Particles ◽  
Electromagnetic Theory ◽  
Time Travel ◽  
Characteristic Radiation ◽  
Theme Issue ◽  
The Past ◽  
Faster Than Light

A little discussed aspect of Heaviside's work in electromagnetics concerned faster-than-light (FTL) charged particles, precursors to the hypothetical tachyon and his discovery that such motion should produce a characteristic radiation signature (now called Cherenkov radiation ). When Heaviside wrote, the time travel implications of FTL were not known (Einstein was still a teenager), and in this paper some speculations are offered on what Heaviside would have thought of FTL time travel, and of the associated (now classic) time travel paradoxes, including the possibility (or not) of sending information into the past. This article is part of the theme issue ‘Celebrating 125 years of Oliver Heaviside's ‘Electromagnetic Theory’’.

SIMULATION OF PARTICLE FLUXES IN THE EARTH'S VICINITY

2002 ◽  
Vol 17 (12n13) ◽  
pp. 1733-1741 ◽  
Author(s):  
VASSILI PLYASKIN
Keyword(s):  
Charged Particles ◽  
Atmospheric Neutrinos ◽  
Particle Fluxes

The results of calculations of the fluxes of charged particles and atmospheric neutrinos are discussed. Results on charged particles are compared with the AMS measurements.

Modeling AUV Localization Error in a Long Baseline Acoustic Positioning System

2018 ◽  
Vol 43 (4) ◽  
pp. 955-968 ◽  
Author(s):  
Dugald J. M. Thomson ◽  
Stan E. Dosso ◽  
David R. Barclay
Keyword(s):  
Positioning System ◽  
Localization Error ◽  
Long Baseline ◽  
Acoustic Positioning

scholarly journals A MODEL OF PETROLEUM PIPELINE SPILLAGE DETECTION SYSTEM FOR USE IN THE NIGER DELTA REGION OF NIGERIA

2016 ◽  
Vol 4 (12) ◽  
pp. 1-16
Author(s):  
Franklin OvueleloloOkorodudu ◽  
Philip OgheneogagaOkorodudu ◽  
Ekerikevwe Kennedy Irikefe
Keyword(s):  
Niger Delta ◽  
Detection System ◽  
Base Station ◽  
Drastic Reduction ◽  
Niger Delta Region ◽  
Switching Unit ◽  
Signal Path ◽  
Data Book ◽  
Microcontroller Unit ◽  
Better Than

In recent times, petroleum pipeline vandalism resulting into spillage has become a significant challenge in Nigeria. Citizens are regularly inundated with reported cases of vandalism which often lead to spillage and a drastic reduction in government’s revenue as is currently the case in Nigeria. This paper focuses on the design of petroleum pipeline spillage detection system. The design consists of the power supply unit, the comparator unit, the microcontroller unit, the switching unit, the transceiver unit and the base station. Simulation of the various units was done individually using the procedural programming application Proteus 8. Most of the components used were according to design specifications from data book with alternatives used in cases where they are unavailable. Wiring sensors which provided continuous electrical paths to break the signal path and trigger an alarm at the base station were used The design was done in units and were tested individually and the whole system was tested to perform the required task of detecting petroleum spillage and alerting the control room for action. It is found that the designed system had the advantage of responding to intrusion and vandalism better than existing systems.

scholarly journals Indoor Localization System Using Wireless Sensor Network

2018 ◽  
pp. 29-38
Keyword(s):  
Indoor Localization ◽  
Low Cost ◽  
Wide Band ◽  
Human Movement ◽  
Indoor Positioning ◽  
Positioning System ◽  
Wireless System ◽  
Anchor Nodes ◽  
Indoor Positioning System ◽  
Better Than

Building a precise low cost indoor positioning and navigation wireless system is a challenging task. The accuracy and cost should be taken together into account. Especially, when we need a system to be built in a harsh environment. In recent years, several researches have been implemented to build different indoor positioning system (IPS) types for human movement using wireless commercial sensors. The aim of this paper is to prove that it is not always the case that having a larger number of anchor nodes will increase the accuracy. Two and three anchor nodes of ultra-wide band with or without the commercial devices (DW 1000) could be implemented in this work to find the Localization of objects in different indoor positioning system, for which the results showed that sometimes three anchor nodes are better than two and vice versa. It depends on how to install the anchor nodes in an appropriate scenario that may allow utilizing a smaller number of anchors while maintaining the required accuracy and cost.

scholarly journals INFLUENCE OF PRIMARY COSMIC RADIATION MASS COMPOSITION ON THE ESTIMATION OF EAS ENERGY

2005 ◽  
Vol 20 (29) ◽  
pp. 6897-6899 ◽  
Author(s):  
S. P. KNURENKO ◽  
A. A. IVANOV ◽  
V. A. KOLOSOV ◽  
Z. E. PETROV ◽  
I. YE. SLEPTSOV ◽  
...  
Keyword(s):  
Cosmic Radiation ◽  
Cherenkov Radiation ◽  
Charged Particles ◽  
Mass Composition ◽  
Mixed Composition ◽  
Radiation Data ◽  
Primary Particles ◽  
Primary Cosmic Radiation ◽  
Electron Photon ◽  
Photon Component

Fraction of energy, E em /E0, transferred to the electron-photon component of EAS at E0 = 1015 ± 1019 eV was estimated by using the Cherenkov radiation data and the data on charged particles obtained at the Yakutsk EAS array. The results are compared with predictions of different models for energy dissipation into the EAS electron-photon component and with calculations performed with different primary nuclei content. In the energy ranges 1015 ± 1016 eV and 1018 ± 1019 eV , the ratio E em /E0 is equal to (77 ± 2)% and (88 ± 2)%, respectively, that does not contradict to a mixed composition of primary particles in the first energy interval and purely proton composition in the second one.

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