Tracking drifting interferences using simple cascaded second order FIR filters

Author

Kong, Seng Kuok ; Chua, Soo Lee ; Soderstrand, Michael A.

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Oklahoma State Univ., Stillwater, OK, USA

Volume

2

fYear

2002

fDate

4-7 Aug. 2002

Abstract

Tracking multiple sinusoids using Kwan-Martin´s algorithm is a popular approach but suffers from convergence problems due to the use of IIR filters for the notch or bandpass stages. By replacing each IIR filter with a simple FIR 2^nd-order notch filter and slaving the IIR filters to these 2^nd-order filters, many of the convergence problems can be solved. Using this approach a three-notch system using Grey-Markel Notch filters is able to resolve three different signals separated by 6 degrees at various locations on the unit circle.

Keywords

FIR filters; cascade networks; interference (signal); notch filters; signal resolution; tracking filters; Grey-Markel notch filter; Kwan-Martin algorithm; cascaded second-order FIR filter; convergence; drifting interference; multiple sinusoid tracking; signal resolution; Adaptive filters; Band pass filters; Computer science; Convergence; Equations; Finite impulse response filter; Frequency; IIR filters; Interference suppression; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on

Print_ISBN

0-7803-7523-8

Type

conf

DOI

10.1109/MWSCAS.2002.1186882

Filename

1186882