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Novel Online Digital Video and High-Speed Data Broadcasting via Standard Coaxial Cable Onboard Marine Operating Vessels

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Abstract

A recently developed deep-sea telemetry (DST), based on the digital subscriber line technology, has been successfully used to equip various remotely operated underwater devices with online video control, high-speed data transmission, and power supply via standard coaxial cables with a length of up to 8,000 m. The system has been applied to study and sample the extreme saline and high-temperature conditions of the Red Sea brines and to detect gas emissions at abandoned wells in the North Sea. In both applications, it has been integrated into a water sampler rosette, providing live video streaming and internal recording from commercial high-definition and analog cameras as well as simultaneous data transmission from a suite of sensors to record and sample the distribution of dissolved gases (e.g., methane and CO2) and oceanographic parameters. This combination makes an ideal survey and monitoring tool for leak detection even in harsh subsea environments. The DST has also been used to deploy landers at selected spots at the seafloor. In combination with remotely operated vehicle (ROV) deployments, this technique can be used to increase significantly the efficiency of ROV bottom time during deep-water operations. The high quality of the video transmission, ease of operation, and versatile application make this novel system superior to existing conventional analog transmission systems.
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Keywords: digital telemetry development; life video transmission; subsea leak detection

Document Type: Research Article

Publication date: January 1, 2015

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  • The Marine Technology Society Journal is the flagship publication of the Marine Technology Society. It publishes the highest caliber, peer-reviewed papers on subjects of interest to the society: marine technology, ocean science, marine policy and education. The Journal is dedicated to publishing timely special issues on emerging ocean community concerns while also showcasing general interest and student-authored works.
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