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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
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.
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
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)
Daniel E. Frye
Daniel E. Frye
Daniel E. Frye
Daniel E. Frye
Daniel E. Frye
A coastal observatory using acoustically-linked sensors and sensor platforms with telemetry gateway moorings.
Daniel E. Frye
Mini-Buoy (0.75 meter antenna height)
Daniel E. Frye
Daniel E. Frye
Daniel E. Frye
Active mooring as deployed at WHOI Buoy Farm
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.
Daniel E. Frye
Daniel E. Frye
Daniel E. Frye
Daniel E. Frye
REMUS docking vehicle
Daniel E. Frye
Daniel E. Frye
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)
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
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
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
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