• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Experimental Verification of Retrodirective Transmit Beamforming in Underwater Acoustic Communication

Research Project

Project/Area Number 20K04477
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21020:Communication and network engineering-related
Research InstitutionKitami Institute of Technology

Principal Investigator

Yoshizawa Shingo  北見工業大学, 工学部, 准教授 (20447080)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords水中音響通信 / ビームフォーミング / 到来方向推定 / レトロディレクティブ
Outline of Research at the Start

水中音響通信で安定した遠距離データ伝送を実現するためのレトロディレクティブ方式送信ビームフォーミングの実験検証を行う。レトロディレクティブ方式はお互いの端末で信号の到来方向を推定し、その到来方向に向けて送波の指向制御を行う方式である。送波エネルギーを指向性制御により効率的に伝送し、遠距離でも安定した通信を可能とすることが期待できる。送信信号の帯域幅・指向範囲を狭帯域・広角から広帯域・挟角へと段階的に変化させながらの指向制御を行い、端末移動や音波伝搬変動にも対応できるように工夫する。プールや海域での通信実験を行い、提案方式の有効性を確認する。

Outline of Final Research Achievements

Underwater wireless communication is used for remote control of remotely operated vehicles (ROVs) and autonomous unmanned vehicles (AUVs) and for real-time transmission of image and video data. One of the challenges in implementing beamforming in underwater acoustic communication is the fluctuation of the terminal position. In order to cope with such fluctuations, we studied a retrodirective system that the direction of arrival is estimated for the sound wave emitted from the other terminal, and the direction of transmission is controlled in the opposite direction and verified by our experiment.

Academic Significance and Societal Importance of the Research Achievements

水中音響通信での受信ビームフォーミングは通信を安定化する手段として利用され、送信ビームフォーミングは通信伝送範囲を拡大する手段として用いられる。水中音響通信で送信ビームフォーミングの実験検証を行った研究事例は少なく、端末位置変動に対応した手法は検討されていなかった。本研究ではレトロディレクティブ方式の通信性能評価を海域試験や水槽試験で実施し、通信品質を示すOutput SNR値で平均12dB改善する成果が得られた。この成果は水中音響通信の伝送範囲を拡大するのに有効であり、水中ロボットや水中ドローンの機能高度化に寄与するものを考えられる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (20 results)

All 2023 2022 2021 2020

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (15 results) (of which Int'l Joint Research: 8 results)

  • [Journal Article] Underwater Acoustic Positioning for Close Sources Using Time Division and Code Division Multiplexing2023

    • Author(s)
      Shingo Yoshizawa, Atsushi Wada, Hideki Sugimoto
    • Journal Title

      NAUN International Journal of Circuits, Systems and Signal Processing

      Volume: 17 Pages: 170-176

    • DOI

      10.46300/9106.2023.17.20

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Transmission of Depth Data by Pulse Position Modulation for Underwater Acoustic Positioning Systems2022

    • Author(s)
      Atsushi Wada, Shingo Yoshizawa
    • Journal Title

      NAUN International Journal of Circuits, Systems and Signal Processing

      Volume: 16 Pages: 999-1006

    • DOI

      10.46300/9106.2022.16.122

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] TDOA Measurement Algorithm Resistant to Multipath Interference in Estimating Direction of Arrival of Underwater Sound Source2021

    • Author(s)
      Takada Keisaku、Yoshizawa Shingo
    • Journal Title

      Journal of Signal Processing

      Volume: 25 Issue: 1 Pages: 33-42

    • DOI

      10.2299/jsp.25.33

    • NAID

      130007965077

    • ISSN
      1342-6230, 1880-1013
    • Year and Date
      2021-01-01
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Impulse Response Shortening in TDOA Algorithm for Underwater Acoustic Localization2021

    • Author(s)
      Shingo Yoshizawa
    • Journal Title

      International Journal of Circuits, Systems and Signal Processing

      Volume: 15 Pages: 1624-1631

    • DOI

      10.46300/9106.2021.15.175

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Underwater Acoustic Localization Based on IR-GCC-PHAT in Reverberant Environments2021

    • Author(s)
      Shingo Yoshizawa
    • Journal Title

      International Journal of Circuits, Systems and Signal Processing

      Volume: 15 Pages: 164-171

    • DOI

      10.46300/9106.2021.15.18

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 水中音響通信における非定常ドップラーシフトに対応したデジタル変復調方式2023

    • Author(s)
      吉澤真吾, 高田渓作, 永田豪
    • Organizer
      電子情報通信学会総合大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Underwater Acoustic Communication Using a Bidirectional Retrodirective System2022

    • Author(s)
      Takashiro Ishikawa, Shingo Yoshizawa
    • Organizer
      EICE International Workshop on Smart Info-Media Systems in Asia (SISA)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Underwater Acoustic Localization for Multiple Sound Sources by Time Division and Code Division Multiplexing2022

    • Author(s)
      Atsushi Wada, Shingo Yoshizawa, Satoshi Yuasa, Hideki Sugimoto
    • Organizer
      IEICE International Workshop on Smart Info-Media Systems in Asia (SISA)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 双方向レトロディレクティブ方式を用いた水中音響通信の基礎検討2022

    • Author(s)
      石川貴大, 吉澤真吾
    • Organizer
      電子情報通信学会SIS研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 時分割・符号分割多重による複数音源を対象とした水中音響測位の試験評価2022

    • Author(s)
      和田篤士, 吉澤真吾, 湯浅智志, 杉本英樹
    • Organizer
      電子情報通信学会SIS研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 水中ロボット搭載型SBL方式音響測位装置の開発2022

    • Author(s)
      吉澤真吾, 土生修平
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] RAKE Reception of OFDM Signals in Non-Line-of-Sight Underwater Acoustic Communication2021

    • Author(s)
      Takashiro Ishikawa, Shingo Yoshizawa
    • Organizer
      IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Simultaneous Multi-points Measurement in Underwater Acoustic Localization2021

    • Author(s)
      Atsushi Wada, Shingo Yoshizawa, Satoshi Yuasa, Hideki Sugimoto
    • Organizer
      IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Evaluation of MQTT Application Implementation in Underwater Acoustic Communication Networks2021

    • Author(s)
      Takeru Obuchi, Shingo Yoshizawa
    • Organizer
      IEICE International Workshop on Smart Info-Media Systems in Asia (SISA)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Automatic Discrimination of Sound Propagation Path Using CNN for Underwater Acoustic Communication2021

    • Author(s)
      Etou Hiromu, Shingo Yoshizawa
    • Organizer
      IEEE International Symposium on Communications and Information Technologies (ISCIT)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 見通し外水中音響通信におけるビームフォーミングを用いた受信機構成の一検討2021

    • Author(s)
      石川貴大, 吉澤真吾
    • Organizer
      電子情報通信学会SIS研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] インパルス応答測定に基づく雑音と音波反射に強い水中音響測位方式2021

    • Author(s)
      鶴原桃香, 吉澤真吾
    • Organizer
      海洋音響学会2021年度研究発表会講演論文集
    • Related Report
      2021 Research-status Report
  • [Presentation] 送信・受信ビームフォーミングを用いた水中音響通信の紋別港湾試験報告2021

    • Author(s)
      永野碧衣, 吉澤真吾
    • Organizer
      海洋音響学会2021年度研究発表会講演論文集
    • Related Report
      2021 Research-status Report
  • [Presentation] A Study of Multipath Error Reduction in Underwater Acoustic Localization2020

    • Author(s)
      Momoka Tsuruhara, Keisaku Takada, Shingo Yoshizawa
    • Organizer
      IEICE International Workshop on Smart Info-Media Systems in Asia (SISA)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Experimental Evaluation of Retrodirective System in Underwater Acoustic Communication2020

    • Author(s)
      Aoi Nagano, Shingo Yoshizawa
    • Organizer
      IEICE International Workshop on Smart Info-Media Systems in Asia (SISA)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi