Digital Filtering Techniques for Broadband Beamforming

Abstract

Digital steering of broadband hydrophone arrays is studied from the viewpoint of digital filtering theory. Emphasis is placed on applications wherein the sampling frequency must be kept as low as possible, implying that accurate beamforming involves interpolating the signals' samples. Finite- impulse-response filters are shown to provide convenient means for digital interpolation. Standard techniques for implementing such filters are reviewed and applied to the design of beamforming algorithms. Estimates are derived for the computing time and for the amount of core memory required by digital computer realizations of time-domain and frequency-domain beamforming processors.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1972
Accession Number
AD0746206

Entities

People

  • Aristides A. Requicha

Organizations

  • SACLANT ASW Research Centre

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Acoustics
  • Acquisition
  • Beam Steering
  • Broadband
  • Computers
  • Data Acquisition
  • Digital Filters
  • Filters
  • Filtration
  • Frequency
  • Frequency Domain
  • Frequency Response
  • Governments
  • Nato
  • Phase Shift
  • Steering
  • Time Domain

Fields of Study

  • Engineering

Readers

  • Acoustical Oceanography.
  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Approximation Theory.