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Improving sine-fitting algorithms for amplitude and phase measurements
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TLDR
Improved sine-fitting algorithms for the measurement of amplitude and phase difference between two records of digitized sine waves with the same frequency are presented.Abstract:
In this paper, improved sine-fitting algorithms for the measurement of amplitude and phase difference between two records of digitized sine waves with the same frequency are presented. These algorithms can be used for example in impedance measurements or to accurately measure the input and the output of a linear system to be characterized in the frequency domain both in amplitude and in phase.read more
Citations
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Journal ArticleDOI
A Four-Terminal Water-Quality-Monitoring Conductivity Sensor
TL;DR: The main advantages of the proposed conductivity sensor include a wide measurement range, an intrinsic capability to minimize errors caused by fouling and polarization effects, and an automatic compensation of conductivity measurements caused by temperature variations.
Journal ArticleDOI
Low frequency impedance measurement using sine-fitting
TL;DR: An impedance measurement technique based on the use of a personal computer, two digitizing channels and the application of four-parameter sine-fitting algorithms to estimate amplitude, phase, offset and frequency of the voltages across the impedance under measurement and of a reference impedance is described.
Journal Article
Digital measurement of phase difference - a comparative study of DSP algorithms
Milos Sedlacek,M. Krumpholc +1 more
TL;DR: Nine methods of measurement of the phase difference of digitized sinusoidal signals mainly according to their sensitivity to sampling non-integer number of signal periods are compared.
Journal ArticleDOI
Uncertainty Analysis of the RMS Value and Phase in the Frequency Domain by Noncoherent Sampling
TL;DR: The uncertainty analysis of the RMS value and phase computed from the DFT spectrum of the noncoherently sampled signal using cosine windows is focused on investigating the influence of quantization noise.
Journal ArticleDOI
Impedance Measurement With Sine-Fitting Algorithms Implemented in a DSP Portable Device
TL;DR: The development and implementation of a digital-signal-processor (DSP)-based portable impedance-measurement instrument is described, where the circuit sinewave stimulus is generated by the device using a direct digital synthesizer at the desired measurement frequency.
References
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Journal ArticleDOI
The interpolated fast Fourier transform: a comparative study
TL;DR: In this article, the properties of five interpolating fast Fourier transform (IFFT) methods with respect to their systematic errors and their noise sensitivity, for a monofrequency signal are studied.
Journal ArticleDOI
Four-parameter fitting of sine wave testing result: iteration and convergence
TL;DR: Small improvements to the iteration procedure of the IEEE Standard 1241 -2001 are suggested, and extension of the standard MATLAB program implementing the sine wave test is discussed.
Journal ArticleDOI
Sinewave fit algorithm based on total least-squares method with application to ADC effective bits measurement
TL;DR: This paper presents a high-performance (i.e., high-precision and high-speed) algorithm to estimate the four parameters of a sinewave from a sample data record and proposes a frequency estimator that turns the nonlinear estimation problem into a linear one.
Journal ArticleDOI
Sinewave fit algorithm based on total least-squares method with application to ADC effective bits measurement
TL;DR: A high-performance algorithm to estimate the four parameters of a sinewave from a sample data record is presented and a frequency estimator is proposed that turns the nonlinear estimation problem into a linear one by the use of trigonometric identity.
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