Results 51 to 60 of about 2,656,564 (343)

A Novel Joint TDOA/FDOA Passive Localization Scheme Using Interval Intersection Algorithm

open access: yesInformation, 2021
Due to the large measurement error in the practical non-cooperative scene, the passive localization algorithms based on traditional numerical calculation using time difference of arrival (TDOA) and frequency difference of arrival (FDOA) often have no ...
Lingyu Ai   +5 more
doaj   +1 more source

Coupling of Active Motion and Advection Shapes Intracellular Cargo Transport

open access: yes, 2012
Intracellular cargo transport can arise from passive diffusion, active motor-driven transport along cytoskeletal filament networks, and passive advection by fluid flows entrained by such motor/cargo motion.
H. K. Versteeg   +3 more
core   +1 more source

Effect of local pumping on random laser modes [PDF]

open access: yes, 2007
We have developed a numerical method based on the transfer matrix to calculate the quasimodes and lasing modes in one-dimensional random systems. Depending on the relative magnitude of the localization length versus the system size, there are two regimes
Cao   +6 more
core   +2 more sources

From Cutting Planes Algorithms to Compression Schemes and Active Learning [PDF]

open access: yes, 2015
Cutting-plane methods are well-studied localization(and optimization) algorithms. We show that they provide a natural framework to perform machinelearning ---and not just to solve optimization problems posed by machinelearning--- in addition to their ...
Louche, Ugo, Ralaivola, Liva
core   +3 more sources

Leveraging Smart Lights for Passive Localization

open access: yes2018 IEEE 15th International Conference on Mobile Ad Hoc and Sensor Systems (MASS), 2018
Localization based on visible light is gaining significant attention. But most existing studies rely on a key requirement: the object of interest needs to carry an optical receiver (camera or photodiode). We remove this requirement and investigate the possibility of achieving accurate localization in a passive manner, that is, without requiring objects
Wang, Weizheng (author)   +3 more
openaire   +3 more sources

Wave propagation through a coherently amplifying random medium [PDF]

open access: yes, 1997
We report a detailed and systematic numerical study of wave propagation through a coherently amplifying random one-dimensional medium. The coherent amplification is modeled by introducing a uniform imaginary part in the site energies of the disordered ...
A. M. Jayannavar   +3 more
core   +2 more sources

Sound Source Localization in a Multipath Environment Using Convolutional Neural Networks

open access: yes, 2017
The propagation of sound in a shallow water environment is characterized by boundary reflections from the sea surface and sea floor. These reflections result in multiple (indirect) sound propagation paths, which can degrade the performance of passive ...
Ferguson, Eric L.   +2 more
core   +1 more source

Effects of localization and amplification on distribution of intensity transmitted through random media [PDF]

open access: yes, 2004
We numerically study the statistical distribution of intensity transmitted through quasi-one dimensional random media by varying the dimensionless conductance $g$ and the amount of absorption or gain.
A. D. Mirlin   +7 more
core   +3 more sources

High Resolution Direct Detection and Position Determination of Sources With Intermittent Emission

open access: yesIEEE Access, 2019
This paper presents our research findings on the direct detection and position determination (DDPD) problem, which is to estimate the positions and the total number of multiple sources with intermittent emission, using the received signals intercepted by
Kegang Hao, Qun Wan
doaj   +1 more source

Interplay between localization and absorption in disordered waveguides [PDF]

open access: yes, 2013
This work presents results of ab-initio simulations of continuous wave transport in disordered absorbing waveguides. Wave interference effects cause deviations from diffusive picture of wave transport and make the diffusion coefficient position- and ...
Payne, Ben, Yamilov, Alexey G.
core   +3 more sources

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