Results 21 to 30 of about 10,853,875 (318)

On one approximate method for recovering a function from its autocorrelation function

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2022
Background. When solving many physical and technical problems, a situation arises when only operators (functionals) from the objects under study (signals, images, etc.) are available for observations (measurements). It is required to restore the object
I.V. Boykov, A.A. Pivkina
doaj   +1 more source

Decorrelation scales for Arctic Ocean hydrography – Part I: Amerasian Basin [PDF]

open access: yesOcean Science, 2018
Any use of observational data for data assimilation requires adequate information of their representativeness in space and time. This is particularly important for sparse, non-synoptic data, which comprise the bulk of oceanic in situ observations in ...
H. Sumata   +13 more
doaj   +1 more source

Autocorrelation function of eigenstates in chaotic and mixed systems [PDF]

open access: yes, 2001
We study the autocorrelation function of different types of eigenfunctions in quantum mechanical systems with either chaotic or mixed classical limits. We obtain an expansion of the autocorrelation function in terms of the correlation length.
Abramowitz M   +42 more
core   +3 more sources

The analysis of partial autocorrelation function in predicting maximum wind speed

open access: yesIOP Conference Series: Earth and Environment, 2019
The stationary and non-stationary testing of the data set can be done using a plot analysis of the Partial Autocorrelation Function of the data, by viewing the maximum number of the expected value of Partial Autocorrelation. The Autocorrelation Function (
G. M. Tinungki
semanticscholar   +1 more source

Characterization of Localized Atmospheric Turbulence Layer Using Laser Light Backscattered off Moving Target

open access: yesApplied Sciences, 2020
A concept of atmospheric turbulence characterization using laser light backscattered off a moving unresolved target or a moving target with a glint is considered and analyzed through wave-optics numerical simulations.
Victor A. Kulikov   +3 more
doaj   +1 more source

A Novel in-Band OSNR Measurement Method Based on Normalized Autocorrelation Function

open access: yesIEEE Photonics Journal, 2018
We propose and experimentally demonstrate a novel in-band optical signal-to-noise ratio (OSNR) measurement method based on normalized autocorrelation function.
Zhuili Huang   +7 more
semanticscholar   +1 more source

Damage Identification of Ancient Timber Structure Based on Autocorrelation Function

open access: yesAdvances in Civil Engineering, 2021
A damage location method for the autocorrelation peak value change rate based on the vibration response of a random vibration structure is established.
Yanfang Hou   +4 more
doaj   +1 more source

On the Statistical Analysis of the Harmonic Signal Autocorrelation Function

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2021
The article presents new tools for investigating the statistical properties of the harmonic signal autocorrelation function (ACF). These tools enable identification of the ACF estimator errors in measurements in which the triggering of the measurements ...
Sienkowski Sergiusz, Krajewski Mariusz
doaj   +1 more source

An Algorithm for Estimating the Signal Frequency at the Output of a Channel with a Controlled Information Flow under Phase Noise Conditions

open access: yesМоделирование и анализ информационных систем, 2021
Research in the field of efficient frequency estimation algorithms is of great interest. The reason for this is the redistribution of the role of additive and phase noise in many modern radio-engineering applications.
Leonid Nikolaevich Kazakov   +2 more
doaj   +1 more source

Nature of self-diffusion in two-dimensional fluids [PDF]

open access: yes, 2017
Self-diffusion in a two-dimensional simple fluid is investigated by both analytical and numerical means. We investigate the anomalous aspects of self-diffusion in two-dimensional fluids with regards to the mean square displacement, the time-dependent ...
Choi, Bongsik   +5 more
core   +3 more sources

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