Results 11 to 20 of about 1,653,628 (289)

Filtering via Simulation: Auxiliary Particle Filters [PDF]

open access: yesJournal of the American Statistical Association, 1999
This article analyses the recently suggested particle approach to filtering time series. We suggest that the algorithm is not robust to outliers for two reasons: the design of the simulators and the use of the discrete support to represent the sequentially updating prior distribution. Here we tackle the first of these problems.
Michael K Pitt, Neil Shephard
openaire   +5 more sources

The Generalized Lyapunov Demodulator: High-Bandwidth, Low-Noise Amplitude and Phase Estimation

open access: yesIEEE Open Journal of Control Systems, 2022
Effective demodulation of amplitude and phase is a requirement in a wide array of applications. Recent efforts have increased the demodulation performance, in particular, the Lyapunov demodulator allows bandwidths up to the carrier frequency of the ...
Michael R. P. Ragazzon   +4 more
doaj   +1 more source

Diffraction in grating optical filters with angular-selective light transmission [PDF]

open access: yesКомпьютерная оптика, 2020
The effect of diffraction on the directional light transmittance of grating optical filters designed for smart windows is studied. The filter has an angular selective light transmission due to two thin-film gratings formed by "non-transmissive ...
R.S. Zakirullin
doaj   +1 more source

On the properties of discrete spatial filters for CFD [PDF]

open access: yes, 2016
© 2016. This version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/The spatial filtering of variables in the context of Computational Fluid Dynamics (CFD) is a common practice.
Baez Vidal, Aleix   +3 more
core   +2 more sources

Electrocardiographic reference values for healthy Netherland Dwarf rabbits and the influence of body position, age and gender

open access: yesWorld Rabbit Science, 2017
The aim of this study was to provide reference values for a single, popular breed of pet rabbit. Moreover, additional objectives were to determine whether sex, body position or age alter Netherland Dwarf rabbit electrocardiographic variables and whether ...
J. M. Chapel   +4 more
doaj   +1 more source

New trends in active filters for improving power quality [PDF]

open access: yes, 1995
Since their basic compensation principles were proposed around 1970, active filters have been studied by many researchers and engineers aiming to put them into practical applications.
Akagi, Hirofumi
core   +1 more source

Passive Power Filters [PDF]

open access: yes, 2016
Power converters require passive low-pass filters which are capable of reducing voltage ripples effectively. In contrast to signal filters, the components of power filters must carry large currents or withstand large voltages, respectively. In this paper,
Künzi, R.
core   +3 more sources

Numerical Simulations of Pinhole and Single Mode Fibre Spatial Filters for Optical Interferometers [PDF]

open access: yes, 2001
We use a numerical simulation to investigate the effectiveness of pinhole spatial filters at optical/IR interferometers and to compare them with single-mode optical fibre spatial filters and interferometers without spatial filters.
Baldwin   +18 more
core   +2 more sources

Observations on adaptive vector filters for noise reduction in color images [PDF]

open access: yes, 2004
In a series of papers, Plataniotis et al. proposed a number of filters for noise reduction in color images where the noise type is unknown. In this letter, those filters with a unified notation are summarized, and it is shown that they are essentially ...
Cree, Michael J.
core   +2 more sources

Evaluation of Turbulent Jet Characteristic Scales Using Joint Statistical Moments and an Adaptive Time-Frequency Analysis

open access: yesFluids, 2022
This paper presents an analysis of turbulence characteristic scales and eddy convection velocity of jet flows computed using joint statistical moments, digital filters, and a modified version of the empirical mode decomposition (EMD).
Anderson R. Proença, Stefano Meloni
doaj   +1 more source

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