fusing sensor data for improved mcm performance using auvs · improved auv mcm . interferometry...
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Fusing sensor data for improved MCM performance using AUVs
UDT 2018
Ioseba Tena
Global Business Manager (Marine Robotic Systems)
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IMAGING
PROTECTION
DATA HARVEST
COMMUNICATIONS
MONITORING
GUIDANCE
TRACKING
NAVIGATION
Overview
Sonardyne International
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• Increase Search Classify Map (SCM) Survey Area.
• Increase Mission Quality and Tempo.
• Improve Percentage Clearance.
Goals
Improved AUV MCM
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• Improve Probability of Detection (PD).
• Decrease Probability of False Alarms (PFA).
• Improve Accuracy of Survey.
• Coverage Rate.
Requirements
Improved AUV MCM
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Actionable data
Improved AUV MCM
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Image: Reach Subsea
AUV Navigation
Improved AUV MCM
“Today we can navigate with centimetre
accuracy”
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Image created by Reto Stöckli, Nazmi El Saleous, and Marit Jentoft-Nilsen, NASA GSFC
Gravity
Rotation
AUV Navigation
Improved AUV MCM
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AUV Navigation
Improved AUV MCM
DVL & Acoustic Aided INS
Navigation Solution 0.04% distance travelled
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AUV Tracking & Communications
Improved AUV MCM
“Today we can track and communicate
across full Ocean depths.”
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USBL
Sonardyne Wideband® 2
Track Exchange Data
AUV Tracking & Communications
Improved AUV MCM
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“Track and Communicate with AUV”
Battery: 95%
Status: Green
Mission: W4
Lat: 50.33503°
Long: -4.160042°
AUV Tracking & Communications
Improved AUV MCM
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Track
Exchange Data: Share all AUV positions
658 addresses available
AUV Tracking & Communications
Improved AUV MCM
0.1% Range Accuracy 1m in 1km
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AUV Navigation
Improved AUV MCM
DVL & Acoustic Aided INS
Relative
navigation
cm scale
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“Ultra-high Definition Multi Aperture Sonar”
Ultra-high definition Multi Aperture Sonar
Improved AUV MCM
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Ultra-high definition Multi Aperture Sonar
Improved AUV MCM
Shadow length holds height information
Shape of highlight and size of shadow is used improve PD and to limit PFA
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(U.S. Navy photo by Mass Communication Specialist 1st Class Peter D. Blair/Released)
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Ultra-high definition Multi Aperture Sonar
Improved AUV MCM
Best in Class Along Track Resolution 0.15°
Sweet Spot
Sonar Range
PLAN VIEW
FRONT VIEW
Dynamic Focusing
Sweet Spot
Sonar Range
Improved SNR
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Ultra-high definition Multi Aperture Sonar
Improved AUV MCM
SS
MAS
Improved Coverage Rate
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Ultra-high definition Multi Aperture Sonar
Improved AUV MCM
• Increased contrast and ultra-high definition:
Better estimates of highlight and shadow pairs
Better operator decisions
Better ATR performance
• Dynamic Focusing:
Improved PD and PFA across the whole swath
• Multiple Apertures:
Improves SNR reducing “speckle”
• MAS:
Improves Percentage Clearance and effectiveness of mission
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Ultra-high definition Multi Aperture Sonar
Improved AUV MCM
20 m 40 m 50 m
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Ultra-high definition Multi Aperture Sonar
Improved AUV MCM
• Open interfaces .SWF8
• Real-time ATR Interface
• PMA integration into 3rd Party Software
• Compatible with leading PMA software:
• Triton Imaging
• HYPACK
• Cheasapeake
• SeeTrack
• CARIS
• Many in development
• Simpler integration to AUV
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Multiple Aperture Sonar Made for Low-Logistics
Multi Aperture Sonar for Low-logistic AUVs
• Hydrophone Array Length 672mm
• Frequency Band 725 to 775 kHz
• Bandwidth 20 kHz
• Swath 200m
• Depth Rate 200m
• Operating Power 18W
• Already integrated with leading suppliers
• Low-logistic platforms
• Ultra-high resolution sonar
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Integrated AUV Navigation and MAS
Improved AUV MCM
Solstice
Multi Aperture Sonar
SPRINT-Nav
AHRS, INS, DVL, Depth
AvTrak 6
Position and Comms
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• AHRS alignment for instant INS initialisation
• Mechanically aligned and tightly coupled for improved performance and flexible deployment options
• Access each instrument or simply interface to INS
• Sparse LBL aiding with 6G beacons
• Battery for continued INS function even during power failures
• In built storage for Post-Processing and QA
• Water blocks to keep electronics safe
• Beam level aiding for better performance and robustness even in difficult seabed conditions
Integrated AUV Navigation and MAS
Improved AUV MCM
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Interferometry provides 3D View of World
Integrated AUV Navigation and MAS
Improved AUV MCM
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Max Depth: 24m (79 feet) Location: 50°19.54N; 4°14.65W Length: 130 metres (427 feet) Description: 7,000 ton US Liberty Ship, hit by a torpedo from a German U-boat near the Eddystone reef. The James Egan Layne was towed towards Whitsand Bay near Plymouth in order to save the cargo. However, on the way back, her stern collapsed causing her to sink.
Integrated AUV Navigation and MAS
Improved AUV MCM
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Ultra-high definition Multi Aperture Sonar
Improved AUV MCM
• May 2014 – PLEM inspection
• Bluefin-12 AUV
• Pipeline End Manifold used to import LNG
• Large Template 12 x 12 m, pipe and mattress protectors
• The individual elements of the mattresses 0.25m by 0.25m
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Ultra-high definition Multi Aperture Sonar
Improved AUV MCM
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Ultra-high definition Multi Aperture Sonar
Improved AUV MCM
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• Increase Search Classify Map (SCM) Survey Area.
• Increase Mission Quality and Tempo.
• Improve Percentage Clearance.
• Coverage Rate.
Goals
Improved AUV MCM
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Thank you for your time today Any questions?