Adaptive Chirp Transform for frequency measurement

Mostarac, Petar; Malarić, Roman; Hegeduš, Hrvoje

doi:10.1016/j.measurement.2011.12.005

Cited by 6 publications

(3 citation statements)

References 12 publications

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“…To be on the safe side, the most acceptable value of X is the smallest value among all available points. The expected value of the next calibration time moment can be obtained by deploying sophisticated algorithms previously published in [14], [18], [19], [20], and [21], but for some TIC entities their approaches introduce obstacles and risks for implementation. The methodology we present in this study, embedding the statistical tool of the least squares, is a simplified option for the TIC entities.…”

Section: Experimental Case Study For Methodology Validationmentioning

confidence: 99%

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Decision-making on establishment of re-calibration intervals of testing, inspection or certification measurement equipment by data science

Cundeva-Blajer

2023

Acta IMEKO

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This contribution is related to issues on decisions in conformity assessment, especially in testing, inspection, and certification (TIC) predominantly based on measurement data. The digital transformation has started to impact the TIC sector, which is related to intensified utilization of data science in TIC. The quality of the data in big data analytics, is not always sufficiently addressed, especially in sectors with traditionally empirical approaches, such as TIC. This paper conducts a survey of options for deployment of data science in the TIC decision making processes, based on conclusions with complementary usage of empirical “measurements” and the “data science”. The focus of the discussion is centered over a case study where data fusion is applied for determining the TIC instrument calibration frequency, presenting a model to establish recalibration interval with reduced risk in the final decision delivery over the next re-calibration moment.

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Section: Experimental Case Study For Methodology Validationmentioning

confidence: 99%

“…Several methods for determining the calibration intervals are published, [13], [14], [19], [20] and [21]. Some models assume that the calibration condition of the instrument can be traced by monitoring the drift of an observable parameter, [13].…”

Section: Planning the Tic Instrument Re-calibration Period By Deploym...mentioning

confidence: 99%

Decision-making on establishment of re-calibration intervals of testing, inspection or certification measurement equipment by data science

Cundeva-Blajer

2023

Acta IMEKO

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“…The Warped Discrete-Fourier Transform (WDFT) [32], for example, has frequency samples allocated nonuniformly over the unit circle, allowing for the development of different FIR filters. The spectral analysis for power electronics has been realized with different variants of CZT, the Adaptive Chirp Transform (ACT) [33], or the Segmented Chirp Z-Transform (SCZT) [34].…”

Section: Single-tone Frequency Measurement Techniquesmentioning

confidence: 99%

Study of the Errors in Interpolated Fast Fourier Transform for Interferometric Applications

Cavedo,

Esmaili,

Norgia

2024

Metrology

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Frequency estimation is often the basis of various measurement techniques, among which optical distance measurement stands out. One of the most used techniques is interpolated fast Fourier transform due to its simplicity, combined with good performance. In this work, we study the limits of this technique in the case of real signals, with reference to a particular interferometric technique known as self-mixing interferometry. The aim of this research is the better understanding of frequency estimation performances in real applications, together with guidance on how to improve them in specific optical measurement techniques. An optical rangefinder, based on self-mixing interferometry, has been realized and characterized. The simulation results allow us to explain the limits of the interpolated fast Fourier transform applied to the realized instrument. Finally, a method for overcoming them is proposed by decorrelating the errors between the measurements, which can provide a guideline for the design of frequency-modulated interferometric distance meters.

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A New Approach to Dense Spectrum Analysis of Infrasonic Signals

Xing

Hao

2017

Communications in Computer and Information Science

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Adaptive Chirp Transform for frequency measurement

Cited by 6 publications

References 12 publications

Decision-making on establishment of re-calibration intervals of testing, inspection or certification measurement equipment by data science

Decision-making on establishment of re-calibration intervals of testing, inspection or certification measurement equipment by data science

Study of the Errors in Interpolated Fast Fourier Transform for Interferometric Applications

A New Approach to Dense Spectrum Analysis of Infrasonic Signals

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