Results 41 to 50 of about 9,414,622 (284)

Design and implementation of fiber-optic vibration positioning system based on FPGA

open access: yesDianzi Jishu Yingyong, 2018
Aiming at the problem that the perimeter of defense zone can’t be located in real time when it is invaded, this paper designed and realized a real-time distributed optical fiber vibration positioning system.
Luo Yijun, Fang Li
doaj   +1 more source

Computation of the normalized cross-correlation by fast Fourier transform

open access: yesPLoS ONE, 2018
The normalized cross-correlation (NCC), usually its 2D version, is routinely encountered in template matching algorithms, such as in facial recognition, motion-tracking, registration in medical imaging, etc. Its rapid computation becomes critical in time
Artan Kaso
semanticscholar   +1 more source

Detectability of the 21 cm-CMB cross-correlation from the EoR [PDF]

open access: yes, 2009
The 21-cm line fluctuations and the cosmic microwave background (CMB) are powerful probes of the epoch of reionisation of the universe. We study the potential of the cross-correlation between 21-cm line fluctuations and CMB anisotropy to obtain further ...
Adshead   +32 more
core   +6 more sources

SEVEN-DAY CYCLE IN THE PARAMETERS OF ATMOSPHERIC AEROSOLS ACCORDING TO THE UKRAINIAN AERONET STATIONS DATA

open access: yesRadio Physics and Radio Astronomy, 2019
Purpose: The work is aimed at searching, analyzing and comparison of weekly cycles in the behavior of optical characteristics of atmospheric aerosols, namely, the aerosol optical thickness in the regions of Ukraine with different degrees of anthropogenic
A. V. Soina
doaj   +1 more source

Advanced machine learning-based kharif maize evapotranspiration estimation in semi-arid climate

open access: yesWater Science and Technology, 2023
Accurate Crop Evapotranspiration (ETc) estimation is crucial for understanding hydrological and agrometeorological processes, yet it's challenged by multiple parameters, data variations, and lack of continuity.
Malkhan Singh Jatav   +4 more
doaj   +1 more source

The venetian-blind effect: A preference for zero disparity or zero slant?

open access: yesFrontiers in Psychology, 2013
When periodic stimuli, such as vertical sinewave gratings, are presented to the two eyes, the initial stage of disparity estimation yields multiple solutions stacked in at multiple depths.
Björn N.S. Vlaskamp   +4 more
doaj   +1 more source

Detrended partial cross-correlation analysis of two nonstationary time series influenced by common external forces. [PDF]

open access: yesPhysical review. E, Statistical, nonlinear, and soft matter physics, 2015
When common factors strongly influence two power-law cross-correlated time series recorded in complex natural or social systems, using detrended cross-correlation analysis (DCCA) without considering these common factors will bias the results.
Xi yuan Qian   +5 more
semanticscholar   +1 more source

Detection and Localization for Multiple Stationary Human Targets Based on Cross-Correlation of Dual-Station SFCW Radars

open access: yesRemote Sensing, 2019
This paper demonstrates the feasibility of detection and localization of multiple stationary human targets based on cross-correlation of the dual-station stepped-frequency continuous-wave (SFCW) radars. Firstly, a cross-correlation operation is performed
Yong Jia   +5 more
doaj   +1 more source

Damage Detection of CFRP Stiffened Panels by Using Cross-Correlated Spatially Shifted Distributed Strain Sensors

open access: yesApplied Sciences, 2020
This paper presents a cross-correlation function-based method applied to a spatially shifted differential strain readout vectors using distributed sensors under backscattering random noise and impact excitations.
Monica Ciminello   +5 more
doaj   +1 more source

Supraharmonics Measurement Based on Colored Noise Suppressed Matrix Pencil Method

open access: yesIEEE Access, 2023
Supraharmonics emitted from power electronic devices can cause electromagnetic interference. However, there is currently no unified standard for measuring supraharmonics.
Kaite Li   +3 more
doaj   +1 more source

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