The Challenges of Multibeam Sonar Water Column Data ...The Challenges of Multibeam Sonar Water...
Transcript of The Challenges of Multibeam Sonar Water Column Data ...The Challenges of Multibeam Sonar Water...
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The Challenges of Multibeam Sonar Water Column Data: Acquisition,
Processing, and Sharing
Lindsay Gee - QPS, Inc.
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GardnerMallace & Dillon-Leetch
Data fusion of current modalities is mature…
…but what is happening in the water column?
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Background: Multibeam Sonars and the Water Column
- 1997: Simrad SM2000
- 2002: 3D Visualization
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Background: MBES WC – Beyond Fisheries
- 2003: Imaging bubble populations (Weber et al.)
- 2003: Suspended particulate density (Jones)
- 2003: Military mid-water targets (Gallaudet and deMoustier)
- 2006: Hydrographic survey applications, least depth detection (Hughes Clarke)
- 2011: Oil detection (Weber et al.)
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Mature acquisition 2D visualization capabilities.
Looking at the Water Column
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Full MBES acquisition
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FMMidwater Background
GOAL: Provide easy to use tool to actually USE water column data, across MANY applications
Challenges:
• Huge data volumes – bathy to backscatter to water-column
• Most of the time there isn’t much to see
• Proliferation of sonar formats
• Geospatial and temporal data
• Variety of applications and requirements
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Requirements included:
• Simple/fast mid-water feature extraction
• Unification of a mid-water format - GWC
• Ability to manage/view files in non-linear
time
• Multiple metaphor - 4D visualization
• Application specific analysis tools - plugin
Water Column Tool: FMMidwater
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FMMidwater
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FMMidwater
Fan Curtain
Points
ASCII
Refracted
Points
ASCII
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Applications
Hard Targets
• Hydrographic
• Engineering
Soft Targets
• Fisheries
• Oceanography
• Geophysics/Geology
System Performance
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UK Civil Hydrography Programme Trial
Compare least depth over wrecks from:– Wire Sweep– MBES conventional bottom detect– Side Scan Sonar– MBES Water Column Data
MBES:
– Kongsberg EM 3002D
– Kongsberg EM 710
– Reson SeaBat 7125
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UK CHP Trial
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Gulf of Mexico – Clearance Survey
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Gulf of Mexico – Clearance Survey
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Gulf of Mexico – Clearance Survey
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Shallow Survey 2012
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NW Rota-1 Volcano (US Naval Oceanographic Office)
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Applications for Water Column Data
• Detection and mapping of gas seeps
http://www.noaanews.noaa.gov/stories2011/20110915_okeanosexplorer.html
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MBES Acoustic Observations
Tom Weber CCOM UNH
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Engineering Inspection - Diffusers
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Water column data and products
• What do we need to provide from FMMidwater?
– Just the data?
–What products?
–Different for each application areas?
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NOAA Okeanos Explorer Program – EM302 Mapping Data Products
• All data available publicly
• Mapping data productso Serves multiple stakeholders
o Easily viewable with out proprietary software
o Long term archival at National archival center (NGDC)
o Available near real-time
• Raw data and bathymetry and backscatter okay, but water column backscatter not fully developed
Meme LobeckerNOAA Okeanos Explorer Program
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Possible water column products– Linking to images of Volumetric, curtains and fan objects
– Geo-referenced videos
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Meme LobeckerNOAA Okeanos Explorer Program
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2012 WCB data productsPrototype product for water column targets
Meme LobeckerNOAA Okeanos Explorer Program
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2012 WCB data productsPrototype Geo-tagged video as an archival product useable for post-cruise identification of water column targets.
Meme LobeckerNOAA Okeanos Explorer Program
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NGDC Water Column Sonar DataNOAA Ship Okeanos Explorer Cruise EX1402
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NGDC Water Column Sonar DataNOAA Ship Pisces Cruise PC1106
National Geophysical Data Center (2014): Water Column Sonar Data Collection. National Geophysical Data Center, NOAA. doi: 10.7289/V5HT2M7C [November2, 2014].
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Water column data products
• Multiple potential users
• Providing content for better raw data discovery
• Limited overhead - data (%) and providers (time)
• Using existing modalities
– Images (fan, stack, beam)
– Movie (fan and stack)
• Automatic project level archive and packaging
• Processing products – depends on user
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Acknowledgements
Meme Lobecker - NOAA Okeanos Explorer Program
Carrie Wall Bell and Chuck Anderson -NOAA/NGDC/Marine Geology and Geophysics Division and CIRES
Tom Weber - CCOM/JHC UNH
Tom Reis - Substructure
Chris Hancock - Kongsberg Maritime
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Thank You – Questions?