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Daniel E. Frye
A GENERAL VIEW OF A GENERAL VIEW OF
GATEWAY PLATFORMSGATEWAY PLATFORMS
Daniel E. FryeDaniel E. Frye
Woods Hole Oceanographic InstitutionWoods Hole Oceanographic Institution
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Daniel E. Frye
GATEWAY PLATFORMGATEWAY PLATFORM
A deployable system that provides connectivity between submerged vehicles and sensors and people or equipment located at a distance. Navigation information is also provided by the Gateway, when needed.
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Daniel E. Frye
Common Elements of Gateway PlatformsCommon Elements of Gateway Platforms
Above Surface Communications
•RF transceivers•RF antenna•GPS receiver•Controller•Battery
Below Surface Communications
•Acoustic modem•Acoustic hydrophone/transducer•Acoustic navigation subsystem•Controller•Battery
Platforms and Sensors
•System controller/data storage•Battery•Mooring/buoy/vehicular system•Deployment system•Sensors
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Daniel E. Frye
Existing Gateway ConceptsExisting Gateway Concepts
• Moored surface buoys
• Subsurface moorings with occasional surface expressions (Pop-up moorings)
• Surface drifters (unmoored)
• Autonomous Underwater Vehicles with surfacing capability
• Gliders (buoyancy driven AUVs)
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Daniel E. Frye
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Daniel E. Frye
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Daniel E. Frye
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Daniel E. Frye
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Daniel E. Frye
A coastal observatory using acoustically-linked sensors and sensor platforms with telemetry gateway moorings.
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Daniel E. Frye
Mini-Buoy (0.75 meter antenna height)
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Daniel E. Frye
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Daniel E. Frye
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Daniel E. Frye
Active mooring as deployed at WHOI Buoy Farm
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Daniel E. Frye
Figure 7. Conceptual drawing showing the winch mooring in surfaced and stowed configurations and the long-term moorings in an unprotected coastal environment.
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Daniel E. Frye
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Daniel E. Frye
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Daniel E. Frye
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Daniel E. Frye
REMUS docking vehicle
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Daniel E. Frye
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Daniel E. Frye
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Daniel E. Frye
General Gateway ApplicationsGeneral Gateway Applications
• Fixed sensor array to operator data link (one way or two way)
• AUVs or gliders to operator data link and navigation node (one way or two way)
• Submarine to ship or shore (or remote platform) communications link (one way or two way)
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Daniel E. Frye
PLATFORM AND SENSOR STANDARDS NEEDED TO PLATFORM AND SENSOR STANDARDS NEEDED TO DEVELOP A SYSTEM CONCEPTDEVELOP A SYSTEM CONCEPT
• Controller/data storage—
• Programming language
• Power system—• Voltage• Current limit• Chemistry
• Mooring/buoy/vehicular systems—• Weight• Volume• Geometry• Maximum depth• Electro-mechanical interfaces
• Deployment system —• Configuration/size• Deployment sequence/procedure
• Sensors —• Controller interface • Power system interface• Wiring• Data format
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Daniel E. Frye
PLATFORM AND SENSOR REQUIREMENTS NEEDED PLATFORM AND SENSOR REQUIREMENTS NEEDED TO DEVELOP A SYSTEM CONCEPTTO DEVELOP A SYSTEM CONCEPT
• Controller/data storage—• Memory capacity• Processing power• Number of ports• Power usage
• Power system—• Power density and delivery limits• Storage life• Volume
• Mooring/buoy/vehicular systems—• Size• Weight• Duration• Depth• Expendable/Re-useable
• Deployment system —• Air-launched• Sub-launched• Ship-launched• Bottom-deployed• Size,weight
• Sensors —• Life • Type• Sampling rate• Accuracy
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Daniel E. Frye
Applications/Requirements Matrix
Applications
1
(Fixed Sensor to Shore)
2
(AUV to Ship)
3
(Sub to Shore)
4
(AUV to Sub)
5
(Glider to Shore)
Requirements
Data Rate
Range
Deployment Method
Duration
Depth
Clandestine
Surface/SS/Bott.
Size/Weight
Sensors