Transcript A General View of Gateway Platforms by Dan Frye

A GENERAL VIEW OF
GATEWAY PLATFORMS
Daniel E. Frye
Woods Hole Oceanographic Institution
Daniel E. Frye
GATEWAY 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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Common 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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Existing 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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A coastal observatory using acoustically-linked sensors
and sensor platforms with telemetry gateway moorings.
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Mini-Buoy (0.75 meter antenna height)
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Active mooring as deployed at WHOI Buoy Farm
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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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REMUS docking vehicle
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General 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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PLATFORM AND SENSOR STANDARDS NEEDED TO
DEVELOP 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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PLATFORM AND SENSOR REQUIREMENTS NEEDED
TO 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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Applications/Requirements Matrix
Applications
1
(Fixed
Sensor to
Shore)
2
(AUV to
Ship)
3
(Sub to
Shore)
4
(AUV to
Sub)
Requirements
Data Rate
Range
Deployment Method
Duration
Depth
Clandestine
Surface/SS/Bott.
Size/Weight
Sensors
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5
(Glider to
Shore)