水槽の水面反射を利用した計量魚群探知機の較正 Calibration of Quantitative Echo Sounders by Using Echo from Water Tank Surface

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In order to get reliable results from surveys by quantitative echo sounders, an accurate calibration of the sounder is necessary especially for the transmitting and receiving system. Therefore, we investigated a new method of simple and accurate calibration by utilizing the echoes from the water surface of an experimental water tank. We show that the method can easily calibrate the equivalent beam width of surface scattering by application of the property that the backscattering strength of the surface of water is 0dB. In case of a sharp beam, we show that the equivalent beam widths for surface scattering and volume scattering are nearly the same. Moreover, it is possible to perform an overall calibration of the transmitting and receiving system, including the equivalent beam width and the transmitting and receiving sensitivities, thus producing a more reliable result than the method in which each factor is measured separately.

収録刊行物

  • 日本水産学会誌  

    日本水産学会誌 63(4), 570-577, 1997-07-15 

    日本水産學會

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各種コード

  • NII論文ID(NAID)
    10004851502
  • NII書誌ID(NCID)
    AN00193422
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00215392
  • NDL 記事登録ID
    4258513
  • NDL 雑誌分類
    ZR26(科学技術--農林水産--水産)
  • NDL 請求記号
    Z18-345
  • データ提供元
    CJP書誌  CJP引用  NDL  IR  J-STAGE 
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