Title :
Adaptive sinusoid detection using IIR notch filters and multirate techniques
Author :
Petraglia, Mariane R. ; Mitra, Sanjit K. ; Szczupak, Jacques
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
A structure for the detection of sinusoids using adaptive infinite impulse response (IIR) notch filters and multirate techniques is presented. By using the frequency enhancement property of the decimation in time process the structure avoids the use of almost unity radius notch filters. Computer simulations are used to demonstrate the performance of this method for the detection of closely spaced sinusoids and tracking of nonstationary signals. The method seems to be particularly useful for real-time and low-cost applications
Keywords :
digital filters; filtering and prediction theory; notch filters; signal detection; IIR notch filters; adaptive sinusoid detection; closely spaced sinusoids; computer simulations; decimation in time process; frequency enhancement property; infinite impulse response; low-cost applications; multirate techniques; nonstationary signals; real-time applications; Adaptive filters; Arithmetic; Band pass filters; Costs; Digital filters; Finite impulse response filter; Frequency; IIR filters; Information filtering; Information filters;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112010
