论文信息 - Spectral analysis using the QD algorithm

Spectral analysis using the QD algorithm

A spectral estimation technique based on the quotient-difference (QD) algorithm of Rutishouser is proposed. The model assumed is a sum of nonharmonically related damped exponentials. The frequencies and damping factors are found directly from the data avoiding the need for rooting a polynomial as required in the closely related Prony' s Energy Spectral Density (ESD) technique.

J. R. Cruz

[1] S.M. Kay,et al. Spectrum analysis—A modern perspective , 1981, Proceedings of the IEEE.

[2] H. Padé. Sur la représentation approchée d'une fonction par des fractions rationnelles , 1892 .

[3] Peter Henrici,et al. Topics in Computational Complex Analysis: II. New Developments Concerning the Quotient-Difference Algorithm , 1983 .

[4] Leonard Weiss,et al. Prony’s Method, Z-Transforms, and Padé Approximation , 1963 .