A data transmission system by FM signal for the measurement of undeground water level in snow season

Hiroshi Inoue, Daitaro Okuyama, Akira Sugawara, Yasuo Yoshida, Kazuhiko Imano, Shinro Abe, Shigeru Ogita

    Research output: Contribution to journalConference articlepeer-review

    Abstract

    A data-transmission system using weak FM signals for measuring underground water levels, which is important for the prevention of landslides during the snow and melting seasons, was developed. The variation of an underground water level is measured by a 1-MHz ultrasound pulse-echo method. Data transmission by weak 80-MHz FM signals is performed over a distance of about 70 m. Field experimental results are shown. The noise arising from snowfall, winter thunder, and rain, and the transmission error were measured in the winter-to-spring period.

    Original languageEnglish
    Pages (from-to)889-894
    Number of pages6
    JournalIEEE International Symposium on Electromagnetic Compatibility
    Issue numberpt 2
    Publication statusPublished - 1989 Dec 1
    Event1989 International Symposium on Electromagnetic Compatibility - EMC'89 - Nagoya, Jpn
    Duration: 1989 Sep 81989 Sep 10

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electrical and Electronic Engineering

    Fingerprint Dive into the research topics of 'A data transmission system by FM signal for the measurement of undeground water level in snow season'. Together they form a unique fingerprint.

    Cite this