Results 61 to 70 of about 1,454,307 (196)

Performance Analysis of the Anchor-free Localization Algorithm with Low-Complexity Method for Node Distance Estimation Enhancement Using ToA [PDF]

Journal of Electrical and Electronics Engineering, 2013
The Ultra Wide-Band (UWB) communication technology is used in ToA and these systems are capable resolving individual multipath components in the received Channel Impulse Response and determining their time of their arrival very precisely. In this article
CIPOV Vladimír, DOBOŠ Lubomír, PAPAJ Ján   +2 more
doaj  

A Model on Indoor Localization System Based on the Time Difference Without Synchronization

IEEE Access, 2018
Localization has emerged as an attractive solution to enable new business models that rely on location-based services in wireless networks for communication, sensing, and control. In particular, time difference-of-arrival (TDOA) is one of the widely used
Yuan Xue, Wei Su, Hongchao Wang, Dong Yang, Jian Ma   +4 more
doaj   +1 more source

5G Positioning: An Analysis of Early Datasets

Sensors, 2023
Global Navigation Satellite Systems (GNSSs) are nowadays the prevailing technology for positioning and navigation. However, with the roll-out of 5G technology, there is a shift towards ‘hybrid positioning’: indeed, 5G time-of-arrival (ToA) measurements ...
Chiara Pileggi, Florin Catalin Grec, Ludovico Biagi   +2 more
doaj   +1 more source

On the Sources and Sizes of Uncertainty in Predicting the Arrival Time of Interplanetary Coronal Mass Ejections Using Global MHD Models

Space Weather, 2021
Accurate predictions of the properties of interplanetary coronal mass ejection (ICME)‐driven disturbances are a key objective for space weather forecasts.
Pete Riley, Michal Ben‐Nun
doaj   +1 more source

Time of arrival in the presence of interactions [PDF]

, 2000
We introduce a formalism for the calculation of the time of arrival t at a space point for particles traveling through interacting media. We develop a general formulation that employs quantum canonical transformations from the free to the interacting ...
A. M. Steinberg, A. M. Steinberg, C. J. Isham, Ch. Spielmann, E. P. Wigner, F. J. de Urríes, F. T. Smith, G. R. Allcock, G. R. Allcock, G. R. Allcock, J. G. Muga, J. G. Muga, J. Hilgevoord, J. Hilgevoord, J. Julve, J. L. McCauley, J. León, J. León, L. Mandelstamm, M. Büttiker, M. Büttiker, M. Moshinsky, M. Moshinsky, M. Toller, N. Grot, P. A. M. Dirac, P. Busch, P. Busch, P. Pitanga, R. Giannitrapani, R. Giannitrapani, S. Brouard, T. E. Hartman, V. A. Fock, V. Delgado, V. I. Arnold, W. Pauli, Y. Aharonov, Y. Aharonov, Y. Aharonov   +39 more
core   +3 more sources

Event-Based Validation of Swell Arrival Time

Journal of Physical Oceanography, 2016
AbstractThe arrival time of ocean swells is an important factor for offshore and coastal engineering and naval and recreational activities, which can also be used in evaluating the numerical wave model. Using the continuity and pattern of wave heights during the same swell event, a methodology is developed for identifying swell events and verifying ...
Jiang, Haoyu, Babanin, Alexander V., Chen, Ge   +2 more
openaire   +2 more sources

Relativistic free-motion time-of-arrival [PDF]

Journal of Physics A: Mathematical and Theoretical, 2007
Relativistic free-motion time-of-arrival theory for massive spin-1/2 particles is systematically developed. Contrary to the nonrelativistic time-of-arrival operator studied thoroughly in previous literatures, the relativistic time-of-arrival operator possesses self-adjoint extensions because of the particle-antiparticle symmetry.
Wang, Zhi-Yong, Xiong, Cai-Dong
openaire   +2 more sources

A review of the decoherent histories approach to the arrival time problem in quantum theory

, 2010
We review recent progress in understanding the arrival time problem in quantum mechanics, from the point of view of the decoherent histories approach to quantum theory.
Bracken A J, Busch P, Eveson S P, Gell-Mann M, Halliwell J J, Halliwell J J, Hegerfeldt G C, James M Yearsley, Muga J G, Omnès R, Penz M, Peres A, Peres A, See for example, See for example, Yamada N, Yearsley J M   +16 more
core   +1 more source

Constrained Weighted Least-Squares Algorithms for 3-D AOA-Based Hybrid Localization

IEEE Open Journal of Signal Processing
Source localization with time-of-arrival (TOA), time-difference-of-arrival (TDOA), time-delay (TD), received-signal-strength (RSS), or angle-of-arrival (AOA) measurements from several spatially distributed sensors is commonly used in practice.
Yanbin Zou, Wenbo Wu, Jingna Fan, Huaping Liu   +3 more
doaj   +1 more source

A Deep Learning Approach to Position Estimation from Channel Impulse Responses

Sensors, 2019
Radio-based locating systems allow for a robust and continuous tracking in industrial environments and are a key enabler for the digitalization of processes in many areas such as production, manufacturing, and warehouse management.
Arne Niitsoo, Thorsten Edelhäußer, Ernst Eberlein, Niels Hadaschik, Christopher Mutschler   +4 more
doaj   +1 more source