Results 21 to 30 of about 1,454,719 (294)

A Single-Site Vehicle Positioning Method in the Rectangular Tunnel Environment

Remote Sensing, 2023
Due to the satellite signals are blocked, it is difficult to obtain the vehicle position in the tunnels. We propose a single-site vehicle localization scheme for the rectangular tunnel environment, where most satellite-based positioning methods can not ...
Suying Jiang, Wei Wang, Peng Peng
doaj   +1 more source

Features of Muon Arrival Time Distributions of High Energy EAS at Large Distances From the Shower Axis [PDF]

, 2002
In view of the current efforts to extend the KASCADE experiment (KASCADE-Grande) for observations of Extensive Air Showers (EAS) of primary energies up to 1 EeV, the features of muon arrival time distributions and their correlations with other observable
, A F Badea, A Haungs, Ambrosio M, Ambrosio M, Antoni T (KASCADE Collaboration), Armitage M L, Armitage M L, Badea A F, Bassi P, Battistoni G, Baxter A J, Bertaina M (KASCADE-Grande Collaboration), Blake P R, Blake P R, Bozdog H, Brancus I M, Brancus I M (KASCADE Collaboration), C D Aiftimiei, Chilingarian A A, Danilova T V, deVilliers E J, Dixon H E, Edge D M, Fesefeldt H, Fletcher R S, Föller M, Goodman J A, Goodman J A, Grieder P K F, H Rebel, Haeusler R, Heck D, Hörandel J (KASCADE Collaboration), I M Brancus, Inoue N, Inoue N, J Oehlschl ger, Jelley J V, Kakimoto F, Kalmykov N N, Kamata K, Khristiansen G B, Lapikens J, Linsley J, Linsley J, Linsley J, Linsley J, M Duma, Nelson W R, Nishimura J, Rebel H, Rebel H, Teshima M, Ulrich R, Walker R, Walker R, Watson A A, Weber J H (KASCADE Collaboration), Woidneck C P, Zabierowski J (KASCADE Collaboration)   +60 more
core   +3 more sources

Probabilistic Time of Arrival Localization [PDF]

IEEE Signal Processing Letters, 2019
In this paper, we take a new approach for time of arrival geo-localization. We show that the main sources of error in metropolitan areas are due to environmental imperfections that bias our solutions, and that we can rely on a probabilistic model to learn and compensate for them.
Fernando Perez-Cruz, Pablo M. Olmos, Michael Minyi Zhang, Howard Huang   +3 more
openaire   +3 more sources

Robust Directional Angle Estimation of Underwater Acoustic Sources Using a Marine Vehicle

Sensors, 2018
Acoustic source localization is used in many underwater applications. Acquiring an accurate directional angle for an acoustic source is crucial for source localization.
Jinwoo Choi, Jeonghong Park, Yoongeon Lee, Jongdae Jung, Hyun-Taek Choi   +4 more
doaj   +1 more source

A Two-Stage Method for Short-Wave Target Localization Using DOA and TDOA Measurements

IEEE Access, 2023
The ionosphere can make the short-wave source localization problem further non-linear, leading to a complicated solution process. This paper proposed a coordinated positioning algorithm based on the ionospheric virtual height (IVH) model to jointly ...
Linqiang Jiang, Tao Tang, Zhidong Wu, Paihang Zhao, Ziqiang Zhang   +4 more
doaj   +1 more source

Time-of-arrival formalism for the relativistic particle [PDF]

, 1996
A suitable operator for the time-of-arrival at a detector is defined for the free relativistic particle in 3+1 dimensions. For each detector position, there exists a subspace of detected states in the Hilbert space of solutions to the Klein Gordon ...
Giannitrapani R, Grot N, Halliwell J J, Hartle J B, Isham C J, J León, Kuchar K V, Leavens C R, Malament D, Marolf D, Schweber S S, Toller M   +11 more
core   +3 more sources

Track mobile devices in a cellular mobile communications system

ACI Avances en Ciencias e Ingenierías, 2009
Este artículo trata sobre el uso de algoritmos estadísticos en la estimación de señales de una red celular y su aplicación al posicionamiento y seguimiento de dispositivos móvil, con la finalidad de conseguir que la red esté en capacidad de proporcionar ...
Santiago Silva, René P. Játiva E.
doaj   +1 more source

Distortions of Experimental Muon Arrival Time Distributions of Extensive Air Showers by the Observation Conditions [PDF]

, 2001
Event-by-event measured arrival time distributions of Extensive Air Shower (EAS) muons are affected and distorted by various interrelated effects which originate from the time resolution of the timing detectors, from fluctuations of the reference time ...
A.F. Badea, Agnetta, Ambrosio, Ambrosio, Antoni, Bassi, Bozdog, Brancus, Danilova, de Villiers, Dixon, Engler, H. Rebel, I.M. Brancus, J. Oehlschläger, Kalmykov, Klages, Linsley, Linsley, R. Haeusler, Rebel, Thielert, Walker, Walker, Watson, Weber   +25 more
core   +2 more sources

Research of underground positioning algorithm based on DOA and TDOA

Gong-kuang zidonghua, 2013
In view of problems that current underground positioning system is sensitive to environmental change and has low positioning accuracy, the paper introduced an underground positioning algorithm based on DOA and TDOA. The algorithm takes advantages of high
ZHAI Yan-rong, HUANG Huan, ZHANG Shen, MA Xiu-ping, LIU Wei, YOU Chun-xia   +5 more
doaj   +1 more source

Optimal Passive Source Localization for Acoustic Emissions

Entropy, 2021
Acoustic emission is a non-destructive testing method where sensors monitor an area of a structure to detect and localize passive sources of elastic waves such as expanding cracks.
Carlos A. Prete, Vítor H. Nascimento, Cássio G. Lopes   +2 more
doaj   +1 more source