NGS-Geomatics Vendor Summit, 3-4 Dec. 2008 1 Geodetic Data Model: Discussion Paper Kevin M. Kelly,...

NGS-Geomatics Vendor Summit, 3-4 Dec. 2008NGS-Geomatics Vendor Summit, 3-4 Dec. 2008 11

Geodetic Data Model:Geodetic Data Model:Discussion PaperDiscussion Paper

Kevin M. Kelly, M.A.Sc., OLSKevin M. Kelly, M.A.Sc., OLSGeodesistGeodesist

NGS-Geomatics Vendor SummitNGS-Geomatics Vendor SummitCorbin, VACorbin, VA

December 3 - 4, 2008December 3 - 4, 2008


How can ArcGIS Help Geodesy?How can ArcGIS Help Geodesy?Motivation is to support geodesy and geophysics with GISMotivation is to support geodesy and geophysics with GIS

By building a comprehensive geodetic data model: By building a comprehensive geodetic data model:

ArcGeodesy*ArcGeodesy*

By building a suite of computational geodesy applications:By building a suite of computational geodesy applications:

Geodetic Analyst*Geodetic Analyst*

(*Neither of these products exists, nor are they approved ESRI development (*Neither of these products exists, nor are they approved ESRI development projects – yet!)projects – yet!)

By facilitating “new science” by bringing together datasets that By facilitating “new science” by bringing together datasets that may have never before been studied togethermay have never before been studied together


Geodesy Impacts Many Disciplines Geodesy Impacts Many Disciplines

And all of these are also studied to some extent using GISAnd all of these are also studied to some extent using GIS


© GGOS (Pages still under Development, welcome to comments, text © GGOS (Pages still under Development, welcome to comments, text and picture content, which should be sent to [email protected] and picture content, which should be sent to [email protected] or post comments into the Open Forum), Last update: 14:53 26/10 or post comments into the Open Forum), Last update: 14:53 26/10 20052005

IAG's Global Geodetic Observing SystemIAG's Global Geodetic Observing System

GGOS is the Global Geodetic Observing GGOS is the Global Geodetic Observing System of the International Association of System of the International Association of Geodesy (IAG). It provides observations of Geodesy (IAG). It provides observations of the three fundamental geodetic observables the three fundamental geodetic observables and their variations, that is, the and their variations, that is, the Earth's Earth's shape, the shape, the Earth's gravity fieldEarth's gravity field and the and the Earth's rotational motionEarth's rotational motion. .

GGOS integrates different geodetic GGOS integrates different geodetic techniques …to techniques …to maintain a stable, maintain a stable, accurate and global reference frameaccurate and global reference frame … …crucial for all Earth observation and many crucial for all Earth observation and many practical applications. practical applications.

GGOS contributes … GGOS contributes … observations related observations related to the global hydrological cycle, the to the global hydrological cycle, the dynamics of atmosphere and oceans, and dynamics of atmosphere and oceans, and natural hazards and disastersnatural hazards and disasters..

These data are processed into forecasts, These data are processed into forecasts, maps, and other maps, and other decision support toolsdecision support tools, , providing valuable and often life-saving providing valuable and often life-saving information to end users.information to end users.

Contribution of Geodesy to GEOSSContribution of Geodesy to GEOSSGlobal Earth Observing System of Systems (GEOSS)Global Earth Observing System of Systems (GEOSS)


ArcGeodesy - Geodetic Analyst CONCEPTArcGeodesy - Geodetic Analyst CONCEPT


Paper: Paper: Designing a Data Model for the Virtual ObservatoryDesigning a Data Model for the Virtual ObservatoryVolume: 314, Volume: 314, Astronomical Data Analysis Software and Systems Astronomical Data Analysis Software and Systems

XIIIXIIIAuthors: Cresitello-Dittmar, M.; DePonte Evans, J.; Evans, I.; Authors: Cresitello-Dittmar, M.; DePonte Evans, J.; Evans, I.;

Harris, M.; Lowe, S.; McDowell, J.C.; Rots, A.H.Harris, M.; Lowe, S.; McDowell, J.C.; Rots, A.H.

Abstract: The goal of the Virtual Observatory is to make Abstract: The goal of the Virtual Observatory is to make astronomical data more accessible and to provide the means astronomical data more accessible and to provide the means to more easily analyze that data. to more easily analyze that data. Currently, archives hold Currently, archives hold analogous data in a variety of different representations, analogous data in a variety of different representations, which impedes interoperability at the data analysis which impedes interoperability at the data analysis stage.stage. An important element of the VO is a data model An important element of the VO is a data model that can unambiguously represent the relationships that can unambiguously represent the relationships between data values and physical properties.between data values and physical properties. At the CfA At the CfA we are developing a data model design that can support the we are developing a data model design that can support the representation, analysis and display of data collected on representation, analysis and display of data collected on different types of instruments. This model is a common, high-different types of instruments. This model is a common, high-level framework of general-purpose components for fusion of level framework of general-purpose components for fusion of heterogeneous data sources. From this framework, we have heterogeneous data sources. From this framework, we have focused on a subset of components required to meet selected focused on a subset of components required to meet selected science objectives on spectral and image data. science objectives on spectral and image data.

Why do we need a Geodetic Data Model Why do we need a Geodetic Data Model Data interoperability is crucial in GEOSS/GGOS and surveyingData interoperability is crucial in GEOSS/GGOS and surveying


ArcGeodesy – Geodetic Data Model ArcGeodesy – Geodetic Data Model Define a comprehensive data modelDefine a comprehensive data model

Reference SystemsHorizontal

VerticalThree-dimensional

(VLBI, SLR, LLR, GPS)

Gravity FieldGravity FieldOrbit analysisOrbit analysis

Gravity gradiometryGravity gradiometryGravimetryGravimetry

Gravity Field DeterminationGravity Field Determination

Earth GeometryEarth GeometryGPSGPS

AltimetryAltimetryInSARInSAR

Remote SensingRemote SensingLevelingLevelingSea-levelSea-level

Earth RotationEarth RotationVLBIVLBISLRSLRLLRLLRGPSGPS

AstrometryAstrometryRinglaser gyrosRinglaser gyros


ArcGeodesy – Geodetic Data ModelArcGeodesy – Geodetic Data Model Example from GGOS Data PortalExample from GGOS Data Portal


• Facilitate geodesy data portals and virtual observatoriesFacilitate geodesy data portals and virtual observatories– Streamline transfer and consumption of geodetic dataStreamline transfer and consumption of geodetic data– Facilitate new data combinations and studies Facilitate new data combinations and studies NEW SCIENCE!NEW SCIENCE!

• Improve geodetic workflowsImprove geodetic workflows– Up the efficiency of geodetic workflows such as geoid modelingUp the efficiency of geodetic workflows such as geoid modeling– Avoid iterative data transfer and runs through distinct “Fortran” routinesAvoid iterative data transfer and runs through distinct “Fortran” routines– Provide tools to improve Q/C and analyses of geodetic dataProvide tools to improve Q/C and analyses of geodetic data

• Facilitate “field-to-finish” survey projectsFacilitate “field-to-finish” survey projects– Streamline transfer and consumption of geodetic dataStreamline transfer and consumption of geodetic data

• Open and extensibleOpen and extensible– Transfer Transfer model onlymodel only, , model+datamodel+data or or model+data+processesmodel+data+processes to colleagues to colleagues– Use and extension by the broader Earth Science and/or survey communityUse and extension by the broader Earth Science and/or survey community

Why ArcGeodesy?Why ArcGeodesy?We all use data models. Some are more organized and effective than We all use data models. Some are more organized and effective than others!others!


• Nearly all geodetic data is georeferencedNearly all geodetic data is georeferenced– Uniquely suited to the geodatabaseUniquely suited to the geodatabase

• Visualization is key to much geodetic data analysis and Q/CVisualization is key to much geodetic data analysis and Q/C– Uniquely suited for tools such as Uniquely suited for tools such as 3D Analyst3D Analyst

• Statistical analysis is crucial for assessing geodetic dataStatistical analysis is crucial for assessing geodetic data– Uniquely suited for tools such as Uniquely suited for tools such as Geostatistical AnalystGeostatistical Analyst

• GIS can support many computational geodesy tasksGIS can support many computational geodesy tasks– Uniquely suited for a tool such as “Uniquely suited for a tool such as “Geodetic Analyst” Geodetic Analyst”

Why ArcGIS?Why ArcGIS?Uniquely suited to geodetic data and the geodesists workflowsUniquely suited to geodetic data and the geodesists workflows


ArcGeodesy / Geodetic AnalystArcGeodesy / Geodetic Analyst Benefits to ESRI and its usersBenefits to ESRI and its users

• Provide sophisticated scientific software tools Provide sophisticated scientific software tools • Capture and document new geodetic workflowsCapture and document new geodetic workflows• Create a new geodetic data model Create a new geodetic data model • Expand GIS user baseExpand GIS user base

– Geodesists, geophysicists and Earth scientistsGeodesists, geophysicists and Earth scientists

• Who benefits?Who benefits?– National Geodetic Agencies (e.g. NGS, Geomatics Canada)National Geodetic Agencies (e.g. NGS, Geomatics Canada)– Geodetic Research CentersGeodetic Research Centers– Space AgenciesSpace Agencies– Geophysical and petroleum companiesGeophysical and petroleum companies– Surveying and mapping companiesSurveying and mapping companies– Survey equipment and software manufacturersSurvey equipment and software manufacturers– AcademiaAcademia


Contact InformationContact Information

ESRIESRI380 New York St., Redlands, CA380 New York St., Redlands, CA

Kevin M. Kelly, Geodesist Kevin M. Kelly, Geodesist 909-793-2853 x1162909-793-2853 [email protected]

mailto:[email protected]

NGS-Geomatics Vendor Summit, 3-4 Dec. 2008 1 Geodetic Data Model: Discussion Paper Kevin M. Kelly,...

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