LRAPP Beamformer

Abstract

The LRAPP beamformer is a 48 input analog adaptive beamformer. Three selective modes provide frequency bandwidth coverage from 10 Hz to 1000 Hz. Detected and undetected beam outputs are available in digital as well as analog form. The LRAPP beamformer is an analog adaptive beamformer capable of accommodating up to 48 hydrophone inputs. It has a frequency bandwidth of 10 Hz to 1000 Hz and can form up to 512 beams. Element-to-element time delays are calculated by mini-computer and can be altered by either the paper tape reader or a teletype interface. Individual digital beam outputs are available for writing on magnetic tape and/or feeding spectrum analysis FFT equipment (not provided). A time-bearing recorder is provided to continuously display the time averaged full beam scan.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 15, 1972
Accession Number
ADA081876

Entities

People

  • W. R. Cherry

Organizations

  • Scripps Institution of Oceanography

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Acoustic Equipment
  • Acoustic Propagation
  • Bandwidth
  • California
  • Frequency
  • Frequency Bands
  • Frequency Response
  • Impedance
  • Instrumentation
  • Magnetic Tape
  • Military Research
  • Recording Systems
  • Tape Recording
  • Tapes
  • Transformers
  • United States
  • United States Government

Fields of Study

  • Engineering
  • Physics

Readers

  • Acoustical Oceanography.
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Phased Array Antenna Design.