Linear-Phase Filters for a Digital Data-Acquisition System Used in Underwater Sound Propagation Experiments.

Abstract

Four groups of linear-phase, low-pass filters have been designed and built to couple a hydrophone array to an A/D conversion system. The filters are characterized by a linear phase response in the useful frequency band, a low overshoot in the step response, and a transmission loss exceeding 40 dB within the first stopband octave. Some active circuitry has been employed to eliminate insertion losses, avoid impedance matching problems, and allow the possible insertion of equalizers. Filters in the same group are phase-matched between each other within less than 0.5 deg throughout the useful frequency range. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 15, 1969
Accession Number
AD0865251

Entities

People

  • Mario Pazzini

Organizations

  • SACLANT ASW Research Centre

Tags

DTIC Thesaurus Topics

  • Acquisition
  • Conversion
  • Data Acquisition
  • Digital Data
  • Filters
  • Frequency
  • Frequency Bands
  • Hydrophones
  • Insertion Loss
  • Losses
  • Low Pass Filters
  • Transmission Loss
  • Underwater Sound

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Phased Array Antenna Design.