NDLI: High Speed Acoustic Network with 2MHz Carrier Frequency for Seafloor Geodetic Observation Robot System

Content Provider	IEEE Xplore Digital Library
Author	Han Jun Asada, A. Yagita, Y.
Copyright Year	2007
Description	Author affiliation: Univ. of Tokyo, Tokyo (Han Jun)
Abstract	A new and effective seafloor geodetic observing robot network system, which consists of several submarine stations situated in regions susceptible to interplate earthquakes, has been proposed and is under construction in Japan. In this system high bit rate and low error rate are required when uploading mass observed geodetic data from AUV to its dock without cable connection. We proposed an acoustic network system aimed to realize a transmission bit rate of 500 kilobits per second (Kbps). As the first step, to verify the feasibility of the proposed system, a prototype acoustic network system with 100 kilo bit per second (kbps) high rate and pair to pair protocol (PPP) implementation was developed using Phase Shift Keying (PSK). At that time, a serial line was used for data transmission from the dock to AUV because only one set of acoustic transmitter and receiver was available from our budget. Now not only a new set of two way acoustic communication hardware has been developed, but also the carrier frequency has been raised to 2 MHz from 500 kHz used in the old system. Presently we are trying to achieve 500 kbps high bit rate communication.
Starting Page	42
Ending Page	46
File Size	4629842
Page Count	5
File Format	PDF
ISBN	1424412072
DOI	10.1109/UT.2007.370945
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-04-17
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Sea floor Robots Bit rate Underwater acoustics Phase shift keying Underwater vehicles Earthquakes Error analysis Communication cables
Content Type	Text
Resource Type	Article

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