Wideband Beamforming Using Modified Farrow Structure FIR Filtering Method for Sonar Applications

A novel wideband beamforming method is proposed where the beamforming is achieved by using Modified Farrow Structure FIR Filtering method. This method provides efficient time delay compensation since it considers only the fractional part of delay unlike other time domain FIR filtering methods. The simulation results show the magnitude response of Modified Farrow Structure FIR Filter is almost unity up to half of the nyquist frequency which is most desired in performing time delay compensation for wideband beamforming in sonar applications.