Acquisition of low-frequency signals immersed in noise by random sampling and finite impulse response filters

Daniel O Carrica; Roberto Petrocelli; Mario Benedetti; Marcos A Funes

doi:10.1063/1.2721404

Acquisition of low-frequency signals immersed in noise by random sampling and finite impulse response filters

Rev Sci Instrum. 2007 Apr;78(4):044702. doi: 10.1063/1.2721404.

Authors

Daniel O Carrica¹, Roberto Petrocelli, Mario Benedetti, Marcos A Funes

Affiliation

¹ CONICET, Consejo Nacional de Investigaciones Científicas y Técnicas and Laboratorio de Instrumentación y Control, Facultad de Ingeniería, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina.

PMID: 17477686
DOI: 10.1063/1.2721404

Abstract

This article presents a method for digital acquisition of low-frequency signals immersed in high-frequency noise when noise frequency is higher than the sampling one. This method uses no antialiasing filters, but random sampling and filtering instead. Its formulation is developed for JRS (jitter random sampling) and finite impulse response (FIR) filters. The proposed method is experimentally tested on three FIR filters: moving average, windowed linear phase, and constrained least square.

Publication types

Research Support, Non-U.S. Gov't