A new fine-frequency estimation algorithm based on parabolic regression

Autor:	D.A. Dermott, C.M. McIntyre
Rok vydání:	1992
Předmět:	Frequency response Estimation theory Computation Fast Fourier transform Parabola Spectral density Algorithm Power (physics) Mathematics Interpolation
Zdroj:	ICASSP
DOI:	10.1109/icassp.1992.226000
Popis:	A simple fine-frequency estimation algorithm that makes use of power information only is described. The simplest methods that are currently used are based on finding the peak of the parabola that interpolates a local maximum value in the power spectrum together with the two adjacent power values. This method is based on performing a least-squares fit of a parabola with a fixed shape to the peak power value and the two adjacent values. The resulting closed-form, high-accuracy method yields estimates that are less biased than those provided by the interpolation formula, but with a simpler computation. >
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ef2e7077c4c3ea5565a57245a26606f7 https://doi.org/10.1109/icassp.1992.226000 Zobrazit plný text záznamu