Results 41 to 50 of about 288,603 (325)
Analysis of the applicability of filtration methods for coordinate measurements
MATEC Web of Conferences, 2018 At present, surface metrology solves such important tasks as monitoring the production process and optimizing the exploitation of parts. A significant part of the measurements is performed by a contact method using Coordinate Measuring Machines.
Grechnikov Fedor V. +2 more
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A Fourier based algorithm to estimate the period of a sampled signal
Visión Electrónica, 2017 Given a sampled signal, in general, is not possible to compute its period, but just an approximation. We propose an algorithm to approximate the period, based on the Discrete Fourier Transform. If that transformation uses data length for multiples of the
José Danilo Rairán Antolines
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Fast Fourier Optimization: Sparsity Matters
, 2012 Many interesting and fundamentally practical optimization problems, ranging from optics, to signal processing, to radar and acoustics, involve constraints on the Fourier transform of a function. It is well-known that the {\em fast Fourier transform} (fft)
C. Papadimitriou +19 more
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Generalizing the discrete fourier transform
Discrete Mathematics, 1985 The author defines the generalized discrete Fourier transform (GDFT (\({\mathbb{F}}G))\) as being the mapping \(\sigma_ G: {\mathbb{F}}G\to A_ 1\oplus...\oplus A_ s\) which decomposes the semisimple group algebra \({\mathbb{F}}G\) into simple Wedderburn components \(A_ i\), \(i=1,...,s\).
openaire +2 more sources
Matrix-Vector Based Fast Fourier Transformations on SDR Architectures [PDF]
Advances in Radio Science, 2008 Today Discrete Fourier Transforms (DFTs) are applied in various radio standards based on OFDM (Orthogonal Frequency Division Multiplex). It is important to gain a fast computational speed for the DFT, which is usually achieved by using specialized Fast ...
Y. He +3 more
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MODIFIED METHOD FOR SIGNAL DELAY ESTIMATION USING ROBUST DFT
Радіоелектронні і комп'ютерні системи, 2019 Modified method for estimating delay and direction of arrival for random wideband signals received by two displaced sensors and corrupted by non-Gaussian noise is designed.
Вячеслав Алексеевич Олейник +1 more
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Sampling Theorem and Discrete Fourier Transform on the Hyperboloid [PDF]
, 2010 Using Coherent-State (CS) techniques, we prove a sampling theorem for holomorphic functions on the hyperboloid (or its stereographic projection onto the open unit disk $\mathbb D_1$), seen as a homogeneous space of the pseudo-unitary group SU(1,1).
Calixto, Manuel +2 more
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Systems, 2023 This paper presents a technique for evaluating the performance of high-precision machines and classifying machine conditions in terms of test capability, such as hard disk drive (HDD) signal writing machines.
Chaweng Sapapporn +2 more
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Acceleration of Digital Stochastic Measurement Simulation Based on Concurrent Programming
Elektronika ir Elektrotechnika, 2018 A/D conversion methods improved through stochastic signal superposition, along with oversampling techniques present significant research direction in the area of signal processing and measurement.
Velibor Pjevalica +3 more
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, 2017 The general space-time evolution of the scattering of an incident acoustic plane wave pulse by an arbitrary configuration of targets is treated by employing a recently developed non-singular boundary integral method to solve the Helmholtz equation in the
Chan, Derek Y. C. +2 more
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