autonomous vehicles workgroup - northern gulf institute
TRANSCRIPT
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Autonomous Vehicles Workgroup
7th annual NOAA/NGI Hypoxia Research Coordination Workshop:
Building the Cooperative Hypoxia Assessment and Monitoring Program
(CHAMP)
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AV WG Members
• Steven F DiMarco (TAMU): LEAD
• John “Chip” Breier (UT-RGV)
• Catherine Edwards (Skiddaway)
• Stephen Howden (USM)
• Andrew Ziegwied (ASV-Global)
• NOAA: David Hilmer, Trevor Meckley, Alan Lewitus
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AV Working Group Purpose
• To identify strategies for the use of autonomous vehicles
• To identify potential of new and emerging technologies for applications to autonomous vehicles
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Existing Vehicles
• Teledyne Webb Research Slocum Gliders
• Liquid Robotics Wave Rider (SV3)
• ASV Global C-Worker series
• Other vehicle considerations
– Kongsberg: Coastal Glider
– Spray
– MOST Autonaut
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AV WG Current Activities
• NOAA CSCOR: Glider Implementation Plan – July 2018
• Texas OneGulf Center of Excellence– 2016-2018 Field Campaign
• Galveston to FGBNMS Transect– Private/Public Partnership with Liquid Robotics and Texas A&M
University
• Stones Array– PPP Shell/Fugro/USM/TAMU
• Resources: GCOOS GANDALF glider data• Resources: Stones Mooring• Resources: NAS Loop Current Report
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Glider Implementation Plan
• Define Metrics
• Capability
• Monitoring Design
• Resource Assessment
• Workforce Requirements
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Enhanced Buoyancy Control
Optimized depth operations:
• Shallow family: 30, 50, 100, 200 meters (shallow as 4 m depth)
• Deep family: 350, 1000 meters
Density ranges:
• 800 cc drive: 12 kg/m³ available (reduced by 100 cc drive)
• Thruster: 17 kg/m³ available
• Combined: 29 kg/m³ available
Speed:
• From buoyancy: up to 1 knot (dependant upon density, operational depth, pump speed, and total displacement).
• From thruster: 2 knots (can be combined with buoyancy).
• Energy: Speed adversely impacts endurance.
Depth, Density, Speed
11 Approved for public release FAL# 16-012
• Greater speed – over 2 knots
• Increased vehicle capability using the standard mission construct
• Freshwater lens penetration for surfacing events
Slocum G2 Hybrid Glider
8 Approved for public release FAL# 16-012
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Glider Challenges
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TAMU Slocum Gliders (G2)
• 307:Reveille
• 308:Howdy
• 540:Stommel
• 541:Sverdrup
• 199:Dora (the Explora)
– TAMUG (GERG/MARS MOU)
www.webbresearch.com/slocumglider.aspx
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Facilities• GERG
– 833 Graham Road, CS
• Glider Lab
– aka the Center for Autonomous Vehicle Exploration
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TAMU Glider Missions
• 34 missions
• 800+ days
• 15000 km traveled
• 20 Coastal missions (< 200 m)
• 14 Deep missions ( > 1000 m)
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Glider or Surface Drifter?
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ASV Global vehicles
C-Enduro
C-Worker 6
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Surface vehicles
• Autonaut
– MOST, Inc.– www.autonautusv.com
R/V Sharp, Delaware BayNovember 2015PI: K. Whilden
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Export Control
• We embrace a culture of compliance at GERG
• Technology Control Plan
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gcoos.org
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GLIDER APPLICATIONSHypoxia
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Gulf Glider Hypoxia ExperimentSummer 2014
M7
M5
M10
M8
• To coordinate and operate multiple autonomous buoyancy ocean vehicles in the northern Gulf of Mexico hypoxic area during summer 2014– Sub-objective: map the hypoxic zone
• Quantify average distance from bottom for glider yo
More information on the MCH project at http://hypoxia.tamu.edu
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Salinity and Oxygen
Ramey et al. 2017 (MTSJ)
250
200
150
100
50
36
32
28
26
34
30
Salin
ity
(PSS
78
)D
isso
lved
Oxy
gen
(u
M)
Pre
ssu
re (
m)
Pre
ssu
re (
m)
50
50
0
0
25
25
7/13 7/20 7/27 8/3 8/10
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How close to the bottom?
Distance above bottom (m)
0 1 2 3 4 5 6
Pro
ba
bili
ty
0
0.05
0.1
0.15
Mission 10
Distance above bottom (m)
0 1 2 3 4 5 6
Pro
ba
bili
ty
0
0.05
0.1
0.15
Mission 8
Distance above bottom (m)
0 1 2 3 4 5 6
Pro
ba
bili
ty
0
0.05
0.1
0.15
Mission 7
Ramey et al. 2017 (MTSJ)
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Glider Dissolved Oxygen
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Hurricane HarveyRapid response
Deployment of Liquid Robotics SV3: Gulf ExplorerTexas A&M University
Department of OceanographyGeochemical and Environmental Research Group
College of Geosciences
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September 8 2017
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Deployment
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SV3 Gulf Explorer
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Gulf Explorerat sea
8 September 2017
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GCOOS.ORG
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gcoos.org
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Stones
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Stones Project Elements
• Long term moorings
– Full water column
– Interdisciplinary sensor suite
– Real-time reporting
• Dedicate glider lines
– East Line
– West Line
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NAS Report
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Color Maps
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AV WG Current Activities
• NOAA CSCOR: Glider Implementation Plan – July 2018
• Texas OneGulf Center of Excellence– 2016-2018 Field Campaign
• Galveston to FGBNMS Transect– Private/Public Partnership with Liquid Robotics and Texas A&M
University
• Stones Array– PPP Shell/Fugro/USM/TAMU
• Resources: GCOOS GANDALF glider data• Resources: Stones Mooring• Resources: NAS Loop Current Report