NDLI: A Mobile Communications Gateway for AUV Telemetry

Content Provider	IEEE Xplore Digital Library
Author	Grund, M. Ball, K.
Copyright Year	2013
Description	Author affiliation: Hydroid, Inc., Eng. Dept., Kongsberg Co., Pocasset, MA, USA (Grund, M.) \|\| Appl. Ocean Phys. & Eng. Dept., Woods Hole Oceanogr. Instn., Woods Hole, MA, USA (Ball, K.)
Abstract	Autonomous underwater vehicle (AUV) operators rely on underwater acoustic telemetry for monitoring and control during mission sorties. This requires operators to maintain acoustic communications by remaining nearby, or deploying a moored gateway buoy and remaining within radio frequency (RF) communications range. An autonomous mobile communications and navigations gateway system has been developed by Hydroid and Woods Hole Oceanographic Institution, to extend telemetry capabilities with REMUS AUVs over the horizon, for situations where deploying moored resources is impractical. Hydroid gateways rely on the Micro-modem acoustic modem, developed by the Acoustic Communications Group at Woods Hole Oceanographic Institution. The modem has been designed with signaling characteristics for reliable communication in the challenging shallow water horizontal propagation path, along with a small physical size and low-power electrical requirements, making it an ideal choice for installation in AUVs. This new mobile “Smart Gateway” is carried as a payload on the Liquid Robotics Wave Glider SV2, an autonomous surface vehicle (ASV), which provides significant energy with long endurance and mobility to allow deep water station keeping, and potentially AUV-coordinated transit. Traditional Gateway systems offered by Hydroid and others typically provide a simple serial interface to the deployed acoustic modem, over RF link. The autonomous gateway system described here manages RF and acoustic links without user intervention, using data caching and AUV link discovery to provide disruption tolerant telemetry services to multiple AUVs. In addition to caching data when links are down, the gateway can monitor the acoustic communications link performance, to adjust acoustic modem data rate, when REMUS AUVs are in range. In addition to telemetry services, the system can provide navigation assistance, by means of a moving long-baseline transponder. This paper provides a detailed system description, along with results from recent at-sea testing.
Sponsorship	IEEE Oceanic Eng. Soc.
Starting Page	1
Ending Page	5
File Size	1282668
Page Count	5
File Format	PDF
ISBN	9780933957404
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	MTS
Subject Keyword	Acoustics Logic gates Telemetry Payloads Vehicles Navigation Modems system description autonomous underwater vehicle underwater acoustic communications autonomous surface craft telemetry command and control long baseline acoustic navigation moving baseline acoustic navigation
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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