Doppler Navigation & Aiding for Maritime Robots

Presented by: Omer PoroyPresented at: The Maritime Business & Technology

Summit, November 30, 2011Panel 10 –Maritime Robotics

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Doppler Velocity Sensing for Maritime Robots

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Why? Navigation & Positioning in GPS Denied EnvironmentsWhen? Anytime You Care Where Your Robot Is or WasWhere? Subsea or Surface Anti Access/Area Denial ScenariosWhat? Measurement of Speed Over Ground & Speed Through WaterHow? Broadband Sonar Signal Processing for Induced Doppler Effect

Who? Teledyne RD Instruments, 30 Years of Acoustic Doppler Processing

Platforms Currently Leveraging Doppler Solutions

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Small, Low Power, Flexible Systems for 2 Man Portable and Light-Weight Maritime Robots - Explorer DVL

Product Selection & Considerations

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Sensor Size vs. Bottom Tracking Range Power Consumption vs. Bottom Tracking Range Accuracy vs. Bottom Tracking Range

It’s all about precision bottom track performance from a given form factor…

Full Ocean Depth, High Precision Systems for Full Range of Maritime Robots – Workhorse Navigator DVL

Long Range, High Power Systems for Larger Maritime Robots – Phased Array Velocity Sensor (PAVS) DVL

Emerging Requirements & Future Needs

• Platforms Have a Growing Need to:

• Project Power Over the Horizon• Covertly Operate in Littoral Waters• Collect Battlespace Information

• New Velocity Sensors Must Provide:

• Feasible Size and Power Constraints for the Host Platform• Robust Bottom Referenced Velocity Measurements at High Altitudes• Precision Bottom Referenced Velocity Measurements Throughout the Littoral Zone• Reliable Bottom Tracking Regardless of Bottom Type or Condition• Water References Velocity and Current Profiles in Deep Waters• Integration Flexibility and Ease of Integration with Inertial Navigation Systems

SMCM Vehicle as Depicted in

DoD FY2009-2034 Unmanned Systems Integrated Roadmap

• Precisely Navigate and Locate Targets• Operate as a Communication Network Node • Provide Persistent ISR Capability

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Questions…

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