NPS Project Capabilities

Modeling the 3D Collision TrackModeling the 3D Collision Trackbetween USS GREENEVILLE between USS GREENEVILLE

and MV Ehime Maruand MV Ehime Maru

Progress Report, 14 June 2001Progress Report, 14 June 2001

Don BrutzmanDon Brutzman

MOVES and Undersea Warfare Academic GroupsMOVES and Undersea Warfare Academic Groups

Naval Postgraduate SchoolNaval Postgraduate School

brutzman@nps.navy.milbrutzman@nps.navy.mil

Background:Naval Postgraduate School

““Navy’s University” Monterey CaliforniaNavy’s University” Monterey California

• USN, USMC, USA, USAF, allied officers, civil serviceUSN, USMC, USA, USAF, allied officers, civil service

• Two-year masters’ degrees with thesesTwo-year masters’ degrees with theses

Undersea Warfare Academic GroupUndersea Warfare Academic Group

• Multiple specialized degree programsMultiple specialized degree programs

• Curriculum includes UW3303 modeling & simulation course Curriculum includes UW3303 modeling & simulation course

MOVES InstituteMOVES Institute

• Modeling, Virtual Environments & SimulationModeling, Virtual Environments & Simulation

• Mix of computer science & ops research simulationMix of computer science & ops research simulation

““Navy’s University” Monterey CaliforniaNavy’s University” Monterey California

• USN, USMC, USA, USAF, allied officers, civil serviceUSN, USMC, USA, USAF, allied officers, civil service

• Two-year masters’ degrees with thesesTwo-year masters’ degrees with theses

Undersea Warfare Academic GroupUndersea Warfare Academic Group

• Multiple specialized degree programsMultiple specialized degree programs

• Curriculum includes UW3303 modeling & simulation course Curriculum includes UW3303 modeling & simulation course

MOVES InstituteMOVES Institute

• Modeling, Virtual Environments & SimulationModeling, Virtual Environments & Simulation

• Mix of computer science & ops research simulationMix of computer science & ops research simulation

Project Description

GoalGoal

• Model all aspects of ship collision with full precisionModel all aspects of ship collision with full precision

MotivationMotivation

• Produce high-resolution 3D virtual environmentProduce high-resolution 3D virtual environment

• Utilize unclassified information assetsUtilize unclassified information assets

• Provide challenging projects for NPS studentsProvide challenging projects for NPS students

• Serve as learning tool for studying lessons learnedServe as learning tool for studying lessons learned

• Prototype for visualizing at-sea tactical awarenessPrototype for visualizing at-sea tactical awareness

GoalGoal

• Model all aspects of ship collision with full precisionModel all aspects of ship collision with full precision

MotivationMotivation

• Produce high-resolution 3D virtual environmentProduce high-resolution 3D virtual environment

• Utilize unclassified information assetsUtilize unclassified information assets

• Provide challenging projects for NPS studentsProvide challenging projects for NPS students

• Serve as learning tool for studying lessons learnedServe as learning tool for studying lessons learned

• Prototype for visualizing at-sea tactical awarenessPrototype for visualizing at-sea tactical awareness

Modelers and sources

ModelersModelers

• Undersea warfare students: track reconstructionUndersea warfare students: track reconstruction

• MOVES students: 3D modelsMOVES students: 3D models

Data SourcesData Sources

• Court of Inquiry report has massive details of interest Court of Inquiry report has massive details of interest http://www.cpf.navy.mil/cpfnews/coidownloadmain.html http://www.cpf.navy.mil/cpfnews/coidownloadmain.html

• National Transportation Safety Board (NTSB) advisoryNational Transportation Safety Board (NTSB) advisory

• Various press reportsVarious press reports

ModelersModelers

• Undersea warfare students: track reconstructionUndersea warfare students: track reconstruction

• MOVES students: 3D modelsMOVES students: 3D models

Data SourcesData Sources

• Court of Inquiry report has massive details of interest Court of Inquiry report has massive details of interest http://www.cpf.navy.mil/cpfnews/coidownloadmain.html http://www.cpf.navy.mil/cpfnews/coidownloadmain.html

• National Transportation Safety Board (NTSB) advisoryNational Transportation Safety Board (NTSB) advisory

• Various press reportsVarious press reports

Court of Inquiry download page

Reconstruction chartlet from Court of Inquiry

New York Times figure8 March 2001

National Transportation Safety Board reconstruction

• Initial report 2 March 2001Initial report 2 March 2001• http://www.ntsb.gov/Pressrel/2001/010302.htmhttp://www.ntsb.gov/Pressrel/2001/010302.htm

• Initial report 2 March 2001Initial report 2 March 2001• http://www.ntsb.gov/Pressrel/2001/010302.htmhttp://www.ntsb.gov/Pressrel/2001/010302.htm

National Transportation Safety Board 3D plot

• Initial report Initial report 2 March 20012 March 2001

• Difficult to Difficult to visualizevisualize

• Initial report Initial report 2 March 20012 March 2001

• Difficult to Difficult to visualizevisualize

3D Scene and Ship Models

Initial modeling completeInitial modeling complete

• Spreadsheet-based dead reckoning of reconstructionSpreadsheet-based dead reckoning of reconstruction

• Aggregate scene with time-based ship tracksAggregate scene with time-based ship tracks

– WaypointInterpolatorPrototypeWaypointInterpolatorPrototype

• 688 class submarine (USS GREENEVILLE)688 class submarine (USS GREENEVILLE)

• MV Ehime MaruMV Ehime Maru

• Initial control model of sea state at collision pointInitial control model of sea state at collision point

• Autogeneration of model library Autogeneration of model library

Initial modeling completeInitial modeling complete

• Spreadsheet-based dead reckoning of reconstructionSpreadsheet-based dead reckoning of reconstruction

• Aggregate scene with time-based ship tracksAggregate scene with time-based ship tracks

– WaypointInterpolatorPrototypeWaypointInterpolatorPrototype

• 688 class submarine (USS GREENEVILLE)688 class submarine (USS GREENEVILLE)

• MV Ehime MaruMV Ehime Maru

• Initial control model of sea state at collision pointInitial control model of sea state at collision point

• Autogeneration of model library Autogeneration of model library

Collision: USS Greeneville, MV Ehime Maru

Entry view

USS Greeneville, port quarter

USS Greeneville, aft stbd quarter

Ehime Maru, stbd quarter

Ehime Maru, astern

Controllable sea state

Controllable sea state

Sea state from above

Key Coordinates for the VRML Map of Oahu

X = 0Y = 0 Z = 0

X = 0Y = 0 Z = -110,572

X = 147,569Y = 0 Z = -110,572

X = 147,569Y = 0 Z = 0

X = 61,000Y = 20,000 Z = 23,000

CollisionArea

Default viewpoint

Oahu

Molokai

Oahu 3D model in progress

Technology used: X3D

Extensible 3D (X3D) Graphics SpecificationExtensible 3D (X3D) Graphics Specification

• 33rdrd generation Virtual Reality Modeling Language generation Virtual Reality Modeling Language

• ISO international standard, non-proprietaryISO international standard, non-proprietary

• 3D graphics interchange for World Wide Web3D graphics interchange for World Wide Web

• Suitable for scaling up to very large networked worldsSuitable for scaling up to very large networked worlds

• Open source, commercial implementations availableOpen source, commercial implementations available

• http://www.web3D.org/x3d.htmlhttp://www.web3D.org/x3d.html

• NPS is leading X3D developmentNPS is leading X3D development

Extensible 3D (X3D) Graphics SpecificationExtensible 3D (X3D) Graphics Specification

• 33rdrd generation Virtual Reality Modeling Language generation Virtual Reality Modeling Language

• ISO international standard, non-proprietaryISO international standard, non-proprietary

• 3D graphics interchange for World Wide Web3D graphics interchange for World Wide Web

• Suitable for scaling up to very large networked worldsSuitable for scaling up to very large networked worlds

• Open source, commercial implementations availableOpen source, commercial implementations available

• http://www.web3D.org/x3d.htmlhttp://www.web3D.org/x3d.html

• NPS is leading X3D developmentNPS is leading X3D development

Future work: already in progress

AnalysisAnalysis• Spline plots for tracks Spline plots for tracks

• Improved sea-state rendering and control Improved sea-state rendering and control

• Evaluate 6 degree-of-freedom (DOF) hydrodynamicsEvaluate 6 degree-of-freedom (DOF) hydrodynamics

3D modeling3D modeling• Periscope viewpoint and animated tourPeriscope viewpoint and animated tour

• Improved usability: control over scenario clock, etc.Improved usability: control over scenario clock, etc.

• Fog, cloudiness, time of day, other visual effectsFog, cloudiness, time of day, other visual effects

• Integrated rendering of sonar and radarIntegrated rendering of sonar and radar

• Multimedia integration: audio, video, hypertext, still imageryMultimedia integration: audio, video, hypertext, still imagery

AnalysisAnalysis• Spline plots for tracks Spline plots for tracks

• Improved sea-state rendering and control Improved sea-state rendering and control

• Evaluate 6 degree-of-freedom (DOF) hydrodynamicsEvaluate 6 degree-of-freedom (DOF) hydrodynamics

3D modeling3D modeling• Periscope viewpoint and animated tourPeriscope viewpoint and animated tour

• Improved usability: control over scenario clock, etc.Improved usability: control over scenario clock, etc.

• Fog, cloudiness, time of day, other visual effectsFog, cloudiness, time of day, other visual effects

• Integrated rendering of sonar and radarIntegrated rendering of sonar and radar

• Multimedia integration: audio, video, hypertext, still imageryMultimedia integration: audio, video, hypertext, still imagery

Contact

Don BrutzmanDon Brutzman

brutzman@nps.navy.milbrutzman@nps.navy.mil

http://web.nps.navy.mil/~brutzmanhttp://web.nps.navy.mil/~brutzman

Code UW/Br, Naval Postgraduate SchoolCode UW/Br, Naval Postgraduate School

Monterey California 93943-5000 USAMonterey California 93943-5000 USA

831.656.2149 voice831.656.2149 voice

831.656.3679 fax831.656.3679 fax

Don BrutzmanDon Brutzman

brutzman@nps.navy.milbrutzman@nps.navy.mil

http://web.nps.navy.mil/~brutzmanhttp://web.nps.navy.mil/~brutzman

Code UW/Br, Naval Postgraduate SchoolCode UW/Br, Naval Postgraduate School

Monterey California 93943-5000 USAMonterey California 93943-5000 USA

831.656.2149 voice831.656.2149 voice

831.656.3679 fax831.656.3679 fax