Results 31 to 40 of about 303,765 (264)

Performance Comparison of ToA and TDOA Based Tracking In Underwater Multipath Environments Using Bernoulli Filter

Polish Maritime Research, 2023
Underwater localization and tracking is a challenging problem and Time-of-Arrival and Time-Difference-of-Arrival approaches are commonly used. However, the performance difference between these approaches is not well understood or analysed adequately ...
Gunes Ahmet
doaj   +1 more source

Free motion time-of-arrival operator and probability distribution [PDF]

, 1999
We reappraise and clarify the contradictory statements found in the literature concerning the time-of-arrival operator introduced by Aharonov and Bohm in Phys. Rev. {\bf 122}, 1649 (1961).
A. Galindo, A.S. Holevo, D.T. Pegg, E. Recami, G. Ludwig, G.R. Allcock, G.R. Allcock, G.R. Allcock, H. Paul, I. L. Egusquiza, J. G. Muga, J. Kijowski, J. Kijowski, J. León, J. Oppenheim, J.G. Muga, J.G. Muga, J.G. Muga, J.G. Muga, M. Razavi, M. Toller, N. Grot, N.I. Akhiezer, P. Busch, P. Busch, R. Giannitrapani, R. Sala, R. Werner, V. Delgado, V.S. Olkhovsky, Y. Aharonov, Y. Aharonov   +31 more
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Relativistic time of arrival and traversal time [PDF]

Journal of Physics A: Mathematical and General, 2002
16 pages, Latex, 8 ...
openaire   +3 more sources

Time-of-arrival distribution for arbitrary potentials and Wigner's time-energy uncertainty relation [PDF]

, 1999
A realization of the concept of "crossing state" invoked, but not implemented, by Wigner, allows to advance in two important aspects of the time of arrival in quantum mechanics: (i) For free motion, we find that the limitations described by Aharonov et ...
A. D. Baute, E. P. Wigner, I. L. Egusquiza, J. G. Muga, J. Kijowski, J. P. Palao, J.G. Muga, J.G. Muga, J.G. Muga, M. Bauer, M.S. Marinov, M.S. Marinov, N. Grot, P. Busch, P. Busch, R. Giannitrapani, R. Kosloff, R. Sala Mayato, R. Werner, S. Brouard, V. Delgado, V. Delgado, Y. Aharonov, Y. Aharonov   +23 more
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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

An Efficient NLOS Errors Mitigation Algorithm for TOA-Based Localization

Sensors, 2020
In time-of-arrival (TOA) localization systems, errors caused by non-line-of-sight (NLOS) signal propagation could significantly degrade the location accuracy.
Yanbin Zou, Huaping Liu
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

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

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
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Cramer-Rao bounds in the estimation of time of arrival in fading channels [PDF]

, 2018
This paper computes the Cramer-Rao bounds for the time of arrival estimation in a multipath Rice and Rayleigh fading scenario, conditioned to the previous estimation of a set of propagation channels, since these channel estimates (correlation between ...
René Jativa, E., Vidal Manzano, José
core   +2 more sources