BEHAVIOR OF SMALL ARRAYS AND THE EFFECTS OF UNDRIVEN ELEMENTS SURROUNDING THEM.

Abstract

Computer results indicate that array behavior is influenced by array size, piston size, and internal impedance of the transducer. The center element of an N-by-N array probably does not have a radiation impedance representative of the average of the array, unless the array is prohibitively large. Also, computer results show that the effects of guard rows of undriven elements surrounding an array decrease as the array becomes larger and as velocity control improves for the array. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 25, 1966
Accession Number
AD0637191

Entities

People

  • David T. Porter

Organizations

  • Navy Underwater Sound Laboratory

Tags

DTIC Thesaurus Topics

  • Computers
  • Computing Devices
  • Impedance
  • Radiation
  • Transducers

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Image Processing and Computer Vision.