Underwater LF wave propagation study for positioning

Hiroshi Yoshida, Ryotaro Suga, Koichi Uesaka, Masaharu Takahashi, Nozomu Ishii, Qiang Chen, Naomichi Fuji, Hiroyasu Sato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In 1998, JAMSTEC started the development project of the first prototype of a long-range cruising AUV (LCAUV) to evaluate fundamental technologies needed to travel through under the ice covered area of the Arctic. In 2005, The LCAUV, Urashima, achieved 317 km continuous cruising powered by a deep sea fuel cell developed in JAMSTEC [1]. We then moved to next stage and have conducted to design the second prototype LCAUV with target range of over 3,000 km. It included improvement of power source, communication system, and positioning system. In 2010 a small high efficiency multi-less (HEML) fuel cell was completed [2] and a long range acoustic communication system achieved 1,000 km communication using time-reversal waves. But we had not developed practical positioning system for under the ice by 2010. In past years the dramatic melting of Arctic ice would be driving extreme weather. This is very serious problem, but it is still poorly understood. Scientists need more research to understand it. We have thus a plan to develop an Arctic research platform that especially performs observations under the ice. Now we are conducting a research of a new positioning method with communication availability before developing the platform or an AUV. The proposed method is based on low frequency electromagnetic waves which can propagate inside of ice and sea water. A prototype to evaluate the method is like GPS repeater. The repeater to be set on the ice receives GPS signal, transmitting radio waves into the sea water via the ice up to several tens meters deep. To realize the system feasibility we started developing underwater antennas and measuring wave propagation in the sea ice and the sea water in 2016.

Original languageEnglish
Title of host publicationOCEANS 2017 - Aberdeen
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-5
Number of pages5
ISBN (Electronic)9781509052783
DOIs
Publication statusPublished - 2017 Oct 25
Externally publishedYes
EventOCEANS 2017 - Aberdeen - Aberdeen, United Kingdom
Duration: 2017 Jun 192017 Jun 22

Publication series

NameOCEANS 2017 - Aberdeen
Volume2017-October

Other

OtherOCEANS 2017 - Aberdeen
CountryUnited Kingdom
CityAberdeen
Period17/6/1917/6/22

Keywords

  • Arctic
  • Underwater radio wave
  • positioning
  • underwater propagation

ASJC Scopus subject areas

  • Instrumentation
  • Computer Networks and Communications
  • Oceanography
  • Acoustics and Ultrasonics
  • Automotive Engineering

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  • Cite this

    Yoshida, H., Suga, R., Uesaka, K., Takahashi, M., Ishii, N., Chen, Q., Fuji, N., & Sato, H. (2017). Underwater LF wave propagation study for positioning. In OCEANS 2017 - Aberdeen (pp. 1-5). (OCEANS 2017 - Aberdeen; Vol. 2017-October). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/OCEANSE.2017.8084829