Noise corrected pole and zero analyzer

Details Noise corrected pole and zero analyzer Noise corrected pole and zero analyzer

1984-08-23

1987-04-14

Krass, Errol A.

Boots, shoes, and leggings

364572, 364574, 371 24, 375 14, G06F 1520, G06F 1100, H03F 1266

Patent

active

046583670

ABSTRACT:
A pole and zero analyzer determines the poles and zeroes of a device for applying a stimulus signal to the device, detecting the stimulus and response signals and computing the auto- and cross spectra. An estimated transfer function is least squares fit to a measured transfer function obtained from the auto- and cross-spectra and the poles and zeroes are obtained as the roots of the estimated transfer function. Inaccuracies due to noise are minimized by subtracting out a noise bias from the squared cross-spectrum obtained during the least squares fit and by orthogonalizing a data matrix used in the determination of the coefficients of the estimated transfer function.

REFERENCES:
patent: 3586846 (1971-06-01), Ley
patent: 3643073 (1972-02-01), Sawamura
patent: 3973112 (1976-08-01), Sloane
patent: 4122529 (1978-10-01), Hoech
patent: 4328552 (1982-05-01), Stovall
patent: 4352160 (1982-09-01), Frech
patent: 4354177 (1982-10-01), Sloane
patent: 4375692 (1983-03-01), Shensa et al.
patent: 4397029 (1983-08-01), Satorius et al.

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