Title :
Selective filtering of spatio-temporal plane waves using 3D cone filter banks
Author_Institution :
Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada
Abstract :
A 3D cone-shaped pass band is ideally required for the selective filtering of spatio-temporal plane waves on the basis of their directions of arrival. A method is proposed for approximating 3D cone-shaped pass bands using a 3D cone filter bank structure in which the bands consist of band limited 3D beam filters having 3D bandwidths that are approximately proportional to their distance from the origin in the 3D frequency space. The individual 3D beam filters way be realized from a cascade of stable 3D frequency planar filters, each of which corresponds to a passive stable 3D continuous-domain frequency-planar prototype filter
Keywords :
cascade networks; channel bank filters; direction-of-arrival estimation; filtering theory; multidimensional digital filters; 3D bandwidths; 3D cone filter banks; 3D cone-shaped pass band; 3D frequency space; 3D prototype filter; band limited 3D beam filters; cascaded stable 3D frequency planar filters; directions of arrival; passive stable 3D continuous-domain filter; selective filtering; spatio-temporal plane waves; Band pass filters; Bandwidth; Channel bank filters; Filter bank; Filtering; Frequency; IIR filters; Passive filters; Sonar detection; Transfer functions;
Conference_Titel :
Communications, Computers and signal Processing, 2001. PACRIM. 2001 IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-7080-5
DOI :
10.1109/PACRIM.2001.953524
