Implementing uncertainty auto-evaluation capabilities on an intelligent FFT analyzer

Author

Liguori, Consolatina ; Paolillo, Alfredo

Author_Institution

Dept. of Ind. Eng., Univ. of Cassino, Italy

Volume

53

Issue

3

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

700

Lastpage

708

Abstract

An fast Fourier transform analyzer with capabilities of auto-configuration, continuous signal analysis, and estimation of spectral component parameters has been provided with the capability of evaluating the uncertainty of the estimated values. The instrument, which has been implemented on a two-DSP hardware, has been characterized through several experimental tests, proving the metrological and operating performances. This paper describes the hardware and the algorithms used for the instrument, and it details the analytical development of the relationships for the uncertainty evaluation and the preliminary compensation of systematic effects. This paper also reports the main experimental results.

Keywords

fast Fourier transforms; uncertainty handling; algorithm uncertainty; analytical development; auto-configuration; continuous signal analysis; fast Fourier transform analyzer; preliminary compensation; spectral component parameters; spectral leakage; systematic effects; uncertainty analysis; uncertainty auto-evaluation capabilities; Algorithm design and analysis; Fast Fourier transforms; Frequency; Hardware; Instruments; Interpolation; Sampling methods; Signal analysis; Spectral analysis; Uncertainty; Algorithm uncertainty; fast Fourier transform; interpolated FFT; spectral leakage; uncertainty analysis;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2004.827074

Filename

1299131