Radiation power measurement of planar phased array sound sources.

DOI
  • YOKOYAMA Tomoki
    Department of Earth and Ocean Sciences, National Defense Academy
  • ASAMI Tomohiro
    Department of Earth and Ocean Sciences, National Defense Academy
  • MORI Kazuyoshi
    Department of Earth and Ocean Sciences, National Defense Academy
  • HASEGAWA Akio
    Department of Earth and Ocean Sciences, National Defense Academy

Bibliographic Information

Other Title
  • 平板フェーズドアレイ音源の放射パワー測定

Abstract

The acoustic radiation power of planar phased array sound sources consisting of Tonpilz-type transducers was measured. The correct measurements of active radiation power can be obtained in a manner independent of the distance between the measurement and radiation surfaces, provided that the measurement surface sufficiently covers the radiation surface. Furthermore, it has been experimentally demonstrated that the measured reactive radiation power varies as a function of the distance from the measurement surface to the radiation surface, and that correct values can be obtained if measurements are performed as close to the radiation surface as possible. Fluctuation of the radiation power of the phased array is caused mainly by radiation impedance between two adjacent transducers.

Journal

Keywords

Details 詳細情報について

  • CRID
    1390282679343294976
  • NII Article ID
    130004291779
  • DOI
    10.3135/jmasj.30.305
  • ISSN
    18816819
    09165835
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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