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

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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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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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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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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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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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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