NDLI: New generation acoustic positioning systems

Content Provider	IEEE Xplore Digital Library
Author	Thomson, D. Elson, S.
Copyright Year	2002
Description	Author affiliation: Nautronix Ltd., UK (Thomson, D.)
Abstract	Underwater acoustics play a vital role in offshore applications including the positioning of underwater structures, ROV's, AUV's, and tracking of towed bodies for underwater surveying and mapping. Current operations are pushing traditional acoustic positioning systems to their limits. For the last 15 years Neutronix has been a pioneer in the field of acoustic signalling techniques. In the early 1990's this work was applied to a variety of applications for the Royal Australian Navy, to develop equipment which could be used in difficult noisy acoustic environments and be able to transmit information accurately, over very long ranges. Neutronix has developed a new signalling technology, ADS2 (Acoustic Digital Spread Spectrum) which overcomes many of the limitations (depth, range, accuracy, noise) of existing acoustic systems. Neutronix ADS2 systems are currently in use and are tested and proven to be accurate in both shallow and deep water, with proven high accuracy in ranges greater than 4,500m (14,000ft). In military applications the ranges up to 30km have been achieved. The new techniques allow a regular and fast position updates to the topside processing system, even in deep and ultra-deep waters, and reduces set up and calibration times considerably. The paper explains the ADS2 technology and its advantages then review particular applications for deep water, survey and DP positioning using LBL, SBL, USBL and multi-user systems.
Starting Page	1312
Ending Page	1318
File Size	479073
Page Count	7
File Format	PDF
ISBN	0780375343
DOI	10.1109/OCEANS.2002.1191828
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-10-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Underwater acoustics Acoustic noise Working environment noise Underwater structures Remotely operated vehicles Underwater tracking Australia Acoustic applications Spread spectrum communication Acoustic testing
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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