NDLI: Acoustic Telemetry Of Video Information

Content Provider	IEEE Xplore Digital Library
Author	Collins, J. Galloway, J.
Copyright Year	1983
Description	Author affiliation: Univ. of Victoria , BC, Canada and Royal Roads Military College, Canada (Collins, J.)
Abstract	Increasing use of underwater instrumentation packages and remotely operated submersibles is giving rise more frequently to applications where availability of an acoustic link for telemetry of video information would be useful. Such links are very sensitive to multipath interference which is an often present property of underwater sound propagation. Successful operation is normally limited to certain ideal situations which minimize multipath such as near vertical links in deep water. However, by using narrow beam transducers, alignment of the link with the most direct or robust path between two underwater points will reduce or eliminate any multipath interference common in coastal waters. This paper documents the use of a narrow beam (\simeq 1\deg) acoustic link to transmit slow-scan video frames underwater for distances up to 300 metres. The transudcer projected the beam at an angle ofdown from horizontal with a source level of 234.5 dB re1 \muP at 1m. Very good quality frames could be received continuously at 8.5s intervals when the receiving hydrophone was properly located in the beam. Attempts were made to relate the video quality to pulse modulated carrier measurements.
Starting Page	163
Ending Page	166
File Size	726151
Page Count	4
File Format	PDF
DOI	10.1109/OCEANS.1983.1152174
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1983-08-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Underwater vehicles Acoustic beams Video compression Telemetry Underwater acoustics Remotely operated vehicles Sonar equipment Instruments Acoustic applications Sea measurements
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

Micro-bathymetric mapping using acoustic range images

Terrain Obstacle Avoidance Sonar For Autonomous Vehicles

A Tracking and Telemetry System for Severe Multipath Acoustic Channels

New archaeological uses of autonomous underwater vehicles

Seafloor exploration with parametric sonar systems: current issues and challenges for underwater vehicles

Cooperative localization of an acoustic source using towed hydrophone arrays

Seafloor roughness measurement from a ROV

A Compact Control Language for AUV acoustic communication

Arctic Ocean trials of Trackpoint ultrashort baseline acoustic positioning systems

Acoustic Telemetry Of Video Information

Similar Documents

Micro-bathymetric mapping using acoustic range images

Terrain Obstacle Avoidance Sonar For Autonomous Vehicles

A Tracking and Telemetry System for Severe Multipath Acoustic Channels

New archaeological uses of autonomous underwater vehicles

Seafloor exploration with parametric sonar systems: current issues and challenges for underwater vehicles

Cooperative localization of an acoustic source using towed hydrophone arrays

Seafloor roughness measurement from a ROV

A Compact Control Language for AUV acoustic communication

Arctic Ocean trials of Trackpoint ultrashort baseline acoustic positioning systems

Acoustic Telemetry Of Video Information