Accession Number : ADD015709
Title : Time-Interpolation Method for Digital Beamformers.
Descriptive Note : Patent, Filed 22 Jan 91, patented 2 Mar 93,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Green, John
Report Date : 02 Mar 1993
Pagination or Media Count : 6
Abstract : An improved time-interpolation method for digital time-domain beamformers is provided. The method determines an input channel value at a known fractional delay as a two-stage process. In a first stage, input channel parameters common to all beams and independent of the known fractional delay are determined. In a second stage, the input channel parameters are weighted and summed for each beam to determine the input channel value at the known fractional delay. Weighting of the parameters is based upon the known fractional delay and the frequency band of interest.
Descriptors : *TIME DOMAIN, *PATENTS, *BEAM FORMING, CHANNELS, DELAY, FREQUENCY, FREQUENCY BANDS, INPUT, INTERPOLATION, PARAMETERS, TIME, VALUE, DIGITAL SYSTEMS
Subject Categories : Electrical and Electronic Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE