Title :
An improvement to the computational efficiency of a wideband FFT beamformer [sonar]
Author :
Follett, Randolph F. ; Ingels, Franklin M.
Author_Institution :
Dept. of Electr. Eng., Mississippi State Univ., MS, USA
Abstract :
A technique for the reduction of the computational requirements of a wideband fast-Fourier transform (FFT) beamformer is presented. By utilizing the inherent symmetry of FFT calculations involving real-valued data, it is possible to reduce the number of FFT processors in the second tier of the beamformer structure by approximately 50%. This allows the bandwidth of the buses connecting the different FFT tiers to use a correspondingly smaller bandwidth
Keywords :
computerised signal processing; fast Fourier transforms; radar theory; sonar; FFT processors; bandwidth; computational efficiency; computerised signal processing; sonar; symmetry; wideband FFT beamformer; Computational efficiency; Delay effects; Equations; Fast Fourier transforms; Frequency; Phased arrays; Sensor arrays; Signal processing algorithms; Sonar measurements; Wideband;
Conference_Titel :
System Theory, 1989. Proceedings., Twenty-First Southeastern Symposium on
Conference_Location :
Tallahassee, FL
Print_ISBN :
0-8186-1933-3
DOI :
10.1109/SSST.1989.72499
