Results 1 to 10 of about 97,955 (160)

Novel Fourier quadrature transforms and analytic signal representations for nonlinear and non-stationary time-series analysis [PDF]

open access: yesRoyal Society Open Science, 2018
The Hilbert transform (HT) and associated Gabor analytic signal (GAS) representation are well known and widely used mathematical formulations for modelling and analysis of signals in various applications.
Pushpendra Singh
doaj   +4 more sources

OFDR Distributed Demodulation Optimization Algorithm Using Discrete-Time Analytic Signal Backscattered Rayleigh Spectrum [PDF]

open access: yesSensors
We propose a novel distributed demodulation optimization algorithm for optical frequency domain reflectometry (OFDR). This algorithm applies discrete-time analytic (DTA) signals to the Rayleigh backscattered signal (RBS) reconstruction.
Shuaipeng Wang   +4 more
doaj   +2 more sources

Hardware-Efficient Phase Demodulation for Digital ϕ-OTDR Receivers with Baseband and Analytic Signal Processing [PDF]

open access: yesSensors
This paper presents hardware-efficient phase demodulation schemes for FPGA-based digital phase-sensitive optical time-domain reflectometry (ϕ-OTDR) receivers.
Shangming Du   +5 more
doaj   +2 more sources

Geophysical Investigation of a Fault Zone from Aeromagnetic Data over the Ageva Area of Okene Kogi State, Nigeria [PDF]

open access: yesPhysics Access, 2021
High-resolution aeromagnetic data over a part of Ageva fault zone in Nigeria have been analyzed with a view to estimate sedimentary thicknesses within the studied area.
Ahmed A Lawal   +2 more
doaj   +1 more source

APPLICATION OF GENERALIZED DERIVATIVE OPERATOR ON BOUGUER ANOMALY FOR DETECTING GEOLOGICAL STRUCTURES

open access: yesJGE, 2022
Generalized Derivative Operator (GDO) is one of the first-order derivative filters that could control the derivative’s direction by modifying the value of azimuth () and dip () parameters.
Dicky Ahmad Zaky, Alissa Bilqis
doaj   +1 more source

Comparison of different approaches of computing the tilt angle of the total horizontal gradient and tilt angle of the analytic signal amplitude for detecting source edges

open access: yesBulletin of the Mineral Research and Exploration, 2021
This paper compares effectiveness of the different approaches of computing the tilt angle of the horizontal gradient amplitude and tilt angle of the analytic signal amplitude such as use of direct expression and frequency domain technique (also called k -
Minh Duc Vu   +3 more
doaj   +1 more source

Direct Modulation for Conventional Matrix Converters Using Analytical Signals and Barycentric Coordinates

open access: yesIEEE Access, 2020
This paper proposes the generalized direct modulation for Conventional Matrix Converters (CMC) using the concept of analytical signals and barycentric coordinates.
Pawel Szczepankowski   +2 more
doaj   +1 more source

Material Permittivity Estimation Using Analytic Peak Ratio of Air-Coupled GPR Signatures

open access: yesIEEE Access, 2022
Ground penetrating radar (GPR) is widely applied for civil engineering, such as for building health assessments or pavement inspections. In these applications, information on the material permittivity is important for internal structure inspection and ...
Budiman P. A. Rohman   +2 more
doaj   +1 more source

Fault Diagnosis in the Slip–Frequency Plane of Induction Machines Working in Time-Varying Conditions

open access: yesSensors, 2020
Motor current signature analysis (MCSA) is a fault diagnosis method for induction machines (IMs) that has attracted wide industrial interest in recent years.
Ruben Puche-Panadero   +4 more
doaj   +1 more source

Orthogonal Signal Generation: An Analytical Approach

open access: yesCircuits, Systems, and Signal Processing, 2023
Nowadays, many signal processing activities are related to the orthogonal properties of specific signals. However, only a few methods offer an analytical solution for generating orthogonal signals, especially when only one input to the generating system is available. These methods are often related to very specific applications and lack generalization.
Jean-Marc Girault   +2 more
openaire   +2 more sources

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