Title :
The influence of windowing on the accuracy of multifrequency signal parameter estimation
Author :
Offelli, Carlo ; Petri, Dario
Author_Institution :
Dipartimento di Elettronica e Inf., Padova Univ., Italy
fDate :
4/1/1992 12:00:00 AM
Abstract :
The author investigates the influence of windowing on the accuracy of a frequency-domain procedure suitable for real-time estimations of multifrequency signal parameters. Imposing very weak assumptions about the statistical description of the noise, simple and accurate expressions for the estimator variances are established. They allow both the evaluation of the result accuracy and the design of the measurement procedure. Simulation results confirm the validity of the presented analysis
Keywords :
estimation theory; frequency measurement; interpolation; parameter estimation; random noise; statistical analysis; estimator variances; interpolation; multifrequency signal parameter estimation; noise; peak search routine; real-time estimations; simulation; statistical description; windowing; Analytical models; Discrete Fourier transforms; Fast Fourier transforms; Frequency estimation; Interpolation; Measurement uncertainty; Noise measurement; Parameter estimation; Signal resolution; Signal to noise ratio;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
