NDLI: Deep sea telemetry system for sediment analysis

Content Provider	IEEE Xplore Digital Library
Author	Barry, W. Haas, R.
Copyright Year	1971
Description	Author affiliation: University of Rhode Island, Kingston, RI, USA (Barry, W.)
Abstract	A telemetry system that can communicate with a deep ocean sediment probe in depths of up to 6,000 feet from a shipboard location is described. Data from the probe occupies a total bandwith of over 200 Khz so that transmission through the ocean is immediately ruled out. The transmission medium chosen is 10,000 feet of type 2P4ORC double armored coaxial cable that also acts as the load bearing number. The attenuation characteristics of this cable are plotted. It is apparent from this plot that a modulation technique that is independent of amplitude distortion should be used. An FM technique, which transmits 100 channels of data --2 of which have bandwidths of 100 Khz, is used to obtain distortionless information that is recorded aboard ship on magnetic tape. Commands are initiated at the shipboard Control Console as oscillator pairs. The two frequencies have tuned devices on the probe which decode the pair. Commands and data can be transmitted simultaneously.
Starting Page	188
Ending Page	191
File Size	287979
Page Count	4
File Format	PDF
DOI	10.1109/OCEANS.1971.1161038
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1971-09-21
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power cables Voltage-controlled oscillators Probes Impedance Frequency modulation Decoding Signal generators Communication cables Reflection Transmission lines
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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