Develpment of the acostic and moition data loger for understanding the freshwate dolphin's echolocation strategy

• Project/Area Number: 25630398
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Naval and maritime engineering
• Research Institution: The University of Tokyo
• Principal Investigator: SUGIMSTSU Harumi 東京大学, 生産技術研究所, 研究員 (90436577)
• Co-Investigator(Renkei-kenkyūsha): KOJIMA Junichi (株)KDDI研究所, 環境計測プロジェクト, プロジェクトリーダー (50416575) ; URA Tamaki 九州工業大学, 社会ロボット具現化センター, 特別教授 (60111564) ; ASADA Akira 東京大学, 生産技術研究所, 教授 (60323648)
• Research Collaborator: Bahl Rajendar インド工科大学デリー校 ; Behera Sandeep National Mission for Clean Ganga ; Pattnaik Ajit チリカ湖管理局
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: バイオロギング / ガンジスカワイルカ / バイオソーナー / クリック音 / 身体モーション / AUV / 水中録音装置 / 水中音録音装置 / 動作評価

Outline of Final Research Achievements

For understanding the Ganges River Dolphin's echolocation strategy and underwater behavior, we have been developing the acoustic and motion logger which can be attached to the Ganges river dolphin. To downsize the loger, a built-in hydrophone and pressure sensor (MEMS) unit was newly developed and installed to the prototype to be used for the experiments using an AUV. After comfirming its peformance, an pencil size date logger using the developed built-in unit and its software was finally develped. The experiments using the system along with the non contact type acoustic recording sytem using a 6 hydrophone array were conducted on Novemver 2015 at the Ganges rievrsite. The perfromance of the developed system was demonstreted well. In addition, as an application, a deep sea (2000m) noise recoreder for practical use was realized.

Research Products

• [Int'l Joint Research] IIT Delhi/Centre for Applied Reseaerch Electronics(India)
• [Journal Article] Development of a prototype underwater acostic and motion recorder for the Ganges river dolphin (2014)
  • Author(s): Junichi Kojima・Harumi Sugimatsu・Tamaki Ura・Rajendar Bahl・Sandeep Behera・Kenji Nagahashi
  • Journal Title: In Proc. Oceans 14 St. Johns, St. Johns Volume: CD-Rom Pages: 1-6
  • DOI: 10.1109/oceans.2014.7003248
  • Acknowledgement Compliant
• [Presentation] Development of a prototype underwater acostic and motion recorder for the Ganges river dolphin (2014)
  • Author(s): Junichi Kojima
  • Organizer: Oceans 14 St. Johns
  • Place of Presentation: St. Johns, Canada
  • Year and Date: 2014-09-17