Title :
Multiple fully adaptive notch filter design based on allpass sections
Author :
DeBrunner, Victor ; Torres, Sebastian
Author_Institution :
Sch. of Electr. & Comput. Eng., Oklahoma Univ., Norman, OK, USA
fDate :
2/1/2000 12:00:00 AM
Abstract :
We develop a canonical, adaptive cascade-structure IIR notch filter to detect and track multiple time-varying frequencies in additive white Gaussian noise. The algorithm uses allpass frequency transformation filters and a truncated gradient. Simulations indicate that our algorithm is computationally simple, converges rapidly, and has good frequency resolution
Keywords :
AWGN; IIR filters; adaptive filters; all-pass filters; cascade networks; filtering theory; notch filters; signal detection; tracking filters; AWGN; IIR notch filter; additive white Gaussian noise; allpass frequency transformation filters; allpass sections; canonical adaptive cascade-structure; convergence; frequency resolution; multiple fully adaptive notch filter design; multiple time-varying frequencies; nonstationary narrowband signals; signal detection; signal tracking; truncated gradient; Adaptive filters; Array signal processing; Frequency; IIR filters; Multiaccess communication; Parameter estimation; Sensor arrays; Signal processing; Signal processing algorithms; Timing;
Journal_Title :
Signal Processing, IEEE Transactions on
