NDLI: A submarine navigator for the 21/sup st/ century

Content Provider	IEEE Xplore Digital Library
Author	Hays, K.M. Schmidt, R.G. Wilson, W.A. Campbell, J.D. Heckman, D.W. Gokhale, M.P.
Copyright Year	2002
Description	Author affiliation: Control & Commun. & Strategic Syst., The Boeing Co., Anaheim, CA, USA (Hays, K.M.; Schmidt, R.G.; Wilson, W.A.; Campbell, J.D.; Heckman, D.W.; Gokhale, M.P.)
Abstract	Recent advances in technology on multiple fronts will enable new and improved approaches to precision navigation of submarines. Improvements in interferometric fiber optic gyro (IFOG) technology have made it possible to use IFOGs in a high accuracy navigator. The use of spherical gimbals for improved temperature control and inertial instrument error autocompensation has been made practical by computer-controlled machining. The use of sonar in certain covert situations will become more prevalent, facilitated by lower power sonar systems and advances in signal processing technology. Satellite based altimetry will make it possible to compensate for gravity deflections using lookup tables. Satellite altimetry will also allow us to make tables of gravity anomaly and ocean depth available to the overall navigation process. Using these advances, it is possible to use measured gravity anomaly from the ship's IMU and sonar soundings from its sonar array to estimate and correct navigation position errors. A navigator is currently being developed at Boeing that will incorporate these new developments as well as the traditional velocity log, pressure depth meter, and Global Positioning System aiding. The new inertial navigator outputs, as well as the set of currently available navigational aid outputs, are combined in a series of filters that allow for the detection and removal of transient errors to furnish the best available position, velocity and attitude to the ship's systems.
Sponsorship	IEEE Aerospace Electron. Syst. Soc
Starting Page	179
Ending Page	188
File Size	961133
Page Count	10
File Format	PDF
ISBN	0780372514
DOI	10.1109/PLANS.2002.998906
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-04-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Underwater vehicles Sonar navigation Marine technology Satellite navigation systems Gravity Error correction Altimetry Sonar measurements Optical interferometry Optical fibers
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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