Results 21 to 30 of about 166,620,327 (288)
Confined Quantum Time of Arrivals [PDF]
Physical Review Letters, 2004 We show that formulating the quantum time of arrival problem in a segment of the real line suggests rephrasing the quantum time of arrival problem to finding states that evolve to unitarily collapse at a given point at a definite time. For the spatially confined particle, we show that the problem admits a solution in the form of an eigenvalue problem ...
Galapon, Eric A. +2 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 +4 more
doaj +1 more source
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
Accurate angle-of-arrival measurement using particle swarm optimization [PDF]
, 2010 As one of the major methods for location positioning, angle-of-arrival (AOA) estimation is a significant technology in radar, sonar, radio astronomy, and mobile communications.
Ho, Kwok Shun +5 more
core +4 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
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 +4 more
doaj +1 more source
Relativistic time of arrival and traversal time [PDF]
Journal of Physics A: Mathematical and General, 2002 16 pages, Latex, 8 ...
openaire +3 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 +5 more
doaj +1 more source
Comparative study for broadband direction of arrival estimation techniques [PDF]
, 2012 This paper reviews and compares three different linear algebraic signal subspace techniques for broadband direction of arrival estimation --- (i) the coherent signal subspace approach, (ii) eigenanalysis of the parameterised spatial correlation matrix ...
Weiss, Stephan +3 more
core +3 more sources
Inventions, 2021 The problem of localization of nodes of a wireless sensor network placed in different physical media (anchor nodes above ground and sensor nodes underground) is addressed in this article.
Herman Sahota, Ratnesh Kumar
doaj +1 more source