| Project/Area Number |
21K19757
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| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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| Allocation Type | Multi-year Fund |
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| Review Section |
Medium-sized Section 60:Information science, computer engineering, and related fields
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
若槻 尚斗 筑波大学, システム情報系, 教授 (40294433)
水谷 孝一 筑波大学, システム情報系, 研究員 (50241790)
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| Project Period (FY) |
2021-07-09 – 2024-03-31
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| Project Status |
Completed (Fiscal Year 2023)
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| Budget Amount *help |
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2023: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2022: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 音響測位 / マルチパス / ドップラー |
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| Outline of Research at the Start |
本研究は，低SN環境で大きな残響・ドップラーの同時計測・排除が可能なディジタル通信方式を設計し，音響GPSに導入する．さらに，受信機が残響・ドップラー情報を計測し，不要信号を排除する仕組みを構築することで，音響GPSの諸課題を同時に解決する．
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| Outline of Final Research Achievements |
We propose a novel acoustic positioning system that utilizes digital communication technology to address multipath and Doppler effects. The positioning system was designed to achieve stable data transmission and ranging by precisely measuring multipath and Doppler effects at the receiver side. A low-cost mechanism to accurately filter only the direct waves necessary for positioning utilizing a database search was also proposed. The performance of the positioning system was evaluated through experiments. The results suggest that the distance between the transmitter and receiver can be estimated with centimeter-level accuracy.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究は，申請者がこれまで携わってきたディジタル通信技術を鍵に，マルチパスやドップラーに強い高精度な音響測位システムを構築した．この成果は，新しいビッグデータである「屋内位置情報」の収集基盤確立につながるものであり，データと屋内位置情報を紐付けた，革新的なマーケティング，防災，バリアフリーの開拓に貢献することが出来る．
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