Monitoring of Torrential Rain along a pair of Leaky Coaxial Cables

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Bibliographic Information

Other Title
  • 漏洩同軸ケーブルによる豪雨の線状モニタリング

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Abstract

Use of Leaky Coaxial cable (LCX) of a VHF/UHF antenna is proposed to monitor intensity of heavy rains along the cable in real time. Using a pair of LCXs with a transmitting antenna and a receiving antenna installed in parallel each other, receiving signals at arbitrary locations along LCX can be determined. For quantitative evaluation between rainfall intensity and the LCX signals, an artificial rainfall experiment was conducted. The LCX signal was nonstationary, and a component of fluctuation due to rainfall was below a noise floor. For denoising, a multiresolution analysis using a Daubechies wavelet was applied to the signals. As a result, the component of the fluctuation due to rainfall was extracted, and one-minute rainfall intensity of the artificial heavy rains was detected successfully. Conducting a field rainfall experiment using the dual LCX system as well, real heavy rains were also detected from a noisy signal using MRA.

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Details 詳細情報について

  • CRID
    1050001335723614848
  • NII Book ID
    AN00027784
  • ISSN
    0386412X
  • HANDLE
    2433/151029
  • Text Lang
    ja
  • Article Type
    departmental bulletin paper
  • Data Source
    • IRDB

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