Estimation of samples of the derivative of a signal based on the signal difference derivative

Author

Hermanowicz, Ewa

Author_Institution

Fac. of Electronics, Telecommun. & Informatics, Tech. Univ. Gdansk

Volume

1

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

63

Abstract

A technique of designing a discrete-time FIR filter called A-DD for converting the backward difference derivative of a discrete-time signal into a train of samples of the first order derivative of the analogue counterpart of this signal is presented. The power of the proposed technique is illustrated by showing the performance of the Lagrangian A-DD, offering very high accuracy in a specified frequency range, thus being especially useful in measurement applications. This design is compared with the results for windowing technique using a rectangular window. The proposed A-DD can be applied in scanning interferometry, in the estimation of the instantaneous frequency and as a digital equalization filter matching the inverse of the zero-order-hold frequency response

Keywords

FIR filters; digital filters; digital-analogue conversion; discrete time filters; equalisers; frequency estimation; Lagrangian A-DD; backward difference derivative; digital equalization filter; discrete-time FIR filter; discrete-time signal; instantaneous frequency estimation; scanning interferometry; signal difference derivative; Digital filters; Finite impulse response filter; Frequency estimation; Frequency measurement; Frequency response; Interferometry; Lagrangian functions; Matched filters; Power measurement; Signal design;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2001. ICECS 2001. The 8th IEEE International Conference on

Print_ISBN

0-7803-7057-0

Type

conf

DOI

10.1109/ICECS.2001.957669

Filename

957669