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Bertinoro Advanced Training T-RDI: Marine Measurements

Bertinoro Advanced Training T-RDI: Marine Measurements. 1Mar2007. New RDI Offerings. New WH Express Product Offering New WH Telemetry Integration Offering The New Doppler Volume Sampler (DVS). Talk to your RDI Representative for more details!. EXPRESS ADCP. 1Mar2007.

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Bertinoro Advanced Training T-RDI: Marine Measurements

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  1. Bertinoro Advanced Training T-RDI: Marine Measurements 1Mar2007

  2. New RDI Offerings • New WH Express Product Offering • New WH Telemetry Integration Offering • The New Doppler Volume Sampler (DVS) Talk to your RDI Representative for more details!

  3. EXPRESS ADCP 1Mar2007

  4. Express ADCP - System Overview • Frequency – 1200 or 600kHz • WorkHorse Hardware • WorkHorse Sentinel Express Sentinel Express

  5. Express ADCP • Meeting today’s customers needs today while ensuring future flexibility. • Low cost solution for today's basic, non-moving current profiling applications • Upgrade path for tomorrow’s bottom tracking surveys, wave and turbulence measurements.

  6. H/W Options Express vs. Standard WorkHorse * NOTE 1: If the Waves Array, Bottom-track or turbulence upgrade is purchased, these parameters will be also be restored to the capability of the Workhorse Monitor ADCP.

  7. Express ADCP - System Overview • Modified Firmware / Software • Easy Configuration • Standard setups limit user choices (increases ease of use for new users) • Advanced features excluded to reduce complexity for new ADCP users • Optimized for basic non-moving applications • Reduced Cost • Fewer steps in manufacturing (no lake test) • Fully upgradeable to standard WH ADCP

  8. F/W Options Express vs. Standard WorkHorse

  9. Upgrade Express to Mode 12 for Boundary Studies

  10. Upgrade Express to WH Waves Array for Measuring Waves

  11. Upgrade Express to Marinerfor Moving Boat Surveys

  12. ADCP DATA TELEMETRYAcoustic and Inductive 1Mar2007

  13. Real Time Data Requirement

  14. ADCP DATA TELEMETRYAcoustic RD Instruments WH or NEMO Interfaced to a Acoustic Modem

  15. ADCP DATA TELEMETRYInductive RD Instruments WH or NEMO Interfaced to a Inductive Modem

  16. ADCP DATA TELEMETRYAcoustic and Inductive

  17. DOPPLER VOLUME SAMPLER(DVS) ADCP HIGH RESOLUTION SHORT RANGE PROFILING 1Mar2007

  18. Doppler Volume Sampler (DVS) • Unique solution for moored oceanographic studies where data quality assurance and long term deployments are required.

  19. DVS System Overview • 3-D Current Profiler - 5 m range • Frequency - 2.4MHz • 5 bins (0.25-5 m bin size) • 4 Janus beams @ 45 deg. • 16 Mb internal memory • Pressure Rating = 750 meters • Size: • 69 cm (27 in) length • 10.2 cm (4 in) diameter • <7Kg (<15 lbs) in air • Optional • Inductive Modem • High Resolution Temperature Sensor • Mounting Clamp and Fin • Pressure Sensor

  20. Who Can Use the DVS? • Academic Oceanographers • Oil Industry • Navy Meteorological Officers • Managers / Regulators • Fisheries • Natural Resources Courtesy ESR http://www.esr.org/esrphotos.html INSTANT mooring deployment, Makassar Strait / p11

  21. DVS to Compliment ADCP in Mooring Arrays Courtesy Bill Johns, RSMAS

  22. DVS Mooring Types Surface Subsurface Bottom ADCP DVS ADCP DVS DVS DVS DVS ADCP DVS DVS Images modified from Bill Johns, RSMAS

  23. Mooring Line “Strum” and Vortex Shedding

  24. Mooring Line “Strum” and Vortex Shedding • Quality Evaluation Data • Measure a profile and see SHEAR to identify if mooring line eddies, buoys or floats are causing errors in bins near transducer. • Error Velocity • Correlation

  25. What is novel about the TRDI solution? • Four beam (Janus) configuration • Velocity QA - error velocity to indicate flow inhomogeneity (e.g. mooring line interference) • Redundancy – reliability; allows three beam solution when one beam is blocked (e.g. by bio-growth or fish) • Fish rejection QA – iterative algorithm preventing biased velocity data by rejecting beam measurements biased by fish and strong scattering layers • Relative backscatter – echo intensity to indicate signal levels

  26. What is novel about the TRDI solution? • Data Quality Assurance - Signal Processing • Correlation values – velocity data confidence • BroadBand Signal processing for high precision outlier rejection • HPR Sensor variability parameters – data confidence • Power Savings • 50-100 velocity measurements per sample to allow mm/s precision in one second –power saving

  27. Special Features • Seabird OEM High Resolution Temp. Sensor • ± 0.005ºC Precision • Sensor isolated from plastic housing and exposed to water flow

  28. Special Features • Integrated SeaBird OEM Inductive Modem

  29. Special Sampling Schemes • Sampling Schemes • Polled Mode • Communicate without interrupting sampling • Compass Sampling for QA • High sampling rate 15hz • Tilt and heading can be averaged (up to 8 samples per second) to smooth vibrations

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