Results 41 to 50 of about 844,799 (232)

An Improved Gaussian Sum Extended Kalman Filter With Colored Noise for GNSS/SINS Tightly Coupled Positioning and Attitude Determination Systems

open access: yesIEEE Access
The Gaussian sum extended Kalman filter (GSEKF), as a nonlinear non-Gaussian filter, disregards the impact of colored noise components in non-Gaussian noise engendered by external interference, which may compromise the estimation accuracy in global ...
Qing Dai   +3 more
doaj   +1 more source

Hybrid FWF Model For Gaussian Noise Reduction From Images

open access: yesJISR on Computing, 2020
In this paper, the image efficiency is improved by using hybrid model of wiener’s filter and fuzzy filter. It’s a challenging task to remove Gaussian noise (GN) from an image and to protect the picture edges. The Fuzzy - Wiener filter (FWF) hybrid model
Lubna Farhi, Farhan Ur Rehman
doaj   +1 more source

Performance of DPSK Signals with Quadratic Phase Noise

open access: yes, 2004
Nonlinear phase noise induced by the interaction of fiber Kerr effect and amplifier noises is a quadratic function of the electric field. When the dependence between the additive Gaussian noise and the quadratic phase noise is taking into account, the ...
Ho, Keang-Po
core   +2 more sources

Peningkatan Kualitas Citra CT-Scan dengan Penggabungan Metode Filter Gaussian dan Filter Median

open access: yesJurnal Teknologi Informasi dan Ilmu Komputer, 2019
Perkembangan alat teknologi akuisisi citra medis, satu diantaranya adalah teknologi yang lazim disebut CT-scan. CT-Scan (Computed Tomography Scan) adalah prosedur untuk mendapatkan gambaran dari berbagai area kecil dari tulang termasuk tengkorak kepala ...
Sumijan Sumijan Sumijan   +2 more
doaj   +1 more source

Effect of time delay on the onset of synchronization of the stochastic Kuramoto model

open access: yes, 2010
We consider the Kuramoto model of globally coupled phase oscillators with time-delayed interactions, that is subject to the Ornstein-Uhlenbeck (Gaussian) colored or the non-Gaussian colored noise.
Bidhan Chandra Bag   +8 more
core   +1 more source

Bayesian Posterior Contraction Rates for Linear Severely Ill-posed Inverse Problems [PDF]

open access: yes, 2013
We consider a class of linear ill-posed inverse problems arising from inversion of a compact operator with singular values which decay exponentially to zero. We adopt a Bayesian approach, assuming a Gaussian prior on the unknown function.
Agapiou, Sergios   +2 more
core   +3 more sources

Mixed Noise Removal Using Adaptive Median Based Non-Local Rank Minimization

open access: yesIEEE Access, 2021
In this paper, we present an innovative mechanism for image restoration problems in which the image is corrupted by a mixture of additive white Gaussian noise (AWGN) and impulse noise (IN). Mixed noise removal is much more challenging problem in contrast
Dai-Gyoung Kim   +5 more
doaj   +1 more source

Continuous-variable quantum key distribution protocols over noisy channels [PDF]

open access: yes, 2008
A continuous-variable quantum key distribution protocol based on squeezed states and heterodyne detection is introduced and shown to attain higher secret key rates over a noisy line than any other one-way Gaussian protocol.
Cerf, Nicolas J., Garcia-Patron, Raul
core   +2 more sources

Dynamics of Limit Cycle Oscillator Subject to General Noise

open access: yes, 2010
The phase description is a powerful tool for analyzing noisy limit cycle oscillators. The method, however, has found only limited applications so far, because the present theory is applicable only to the Gaussian noise while noise in the real world often
A. Pikovsky   +6 more
core   +1 more source

Phase Statistics of Soliton

open access: yes, 2003
The characteristic function of soliton phase jitter is found analytically when the soliton is perturbed by amplifier noise. In additional to that from amplitude jitter, the nonlinear phase noise due to frequency and timing jitter is also analyzed ...
Bissessur   +30 more
core   +1 more source

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