Title :
Constant beamwidth IIR lowpass filter for data sampled at nonuniform rate
Author_Institution :
Dept. of Electr. Eng., Alberta Univ., Edmonton, Alta., Canada
Abstract :
A simple modification to the algorithm for a first-order infinite impulse response lowpass filter to allow the use of nonuniformly sampled data is described. This real-time algorithm uses measurements of the intersample interval to modify the recursion weight so that the filter cutoff frequency is kept constant.
Keywords :
digital filters; low-pass filters; IIR lowpass filter; filter cutoff frequency; first-order infinite impulse response lowpass filter; intersample interval; nonuniform rate; nonuniformly sampled data; real-time algorithm; recursion weight;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910209
