GPS Explorer - IGS AC Workshop - Miami 2008
GPS Explorer: Overview and
Extension to INDIGO
http://geoapp.ucsd.edu
http://indigo.nasa.gov
Paul Jamason | Scripps Orbit and Permanent Array Center (SOPAC )
IGS Analysis Center Workshop, Miami, 2008
GPS Explorer - IGS AC Workshop - Miami 2008
GPS Explorer/INDIGO:
Participants
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GPS Data Products for Solid Earth Science; NASA REASON CAN
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Modeling On-the-Fly Solutions for Earth Science; NASA ACCESS
Project
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PI’s: Frank Webb, JPL; Yehuda Bock, SOPAC; Sharon Kedar, JPL
Ruey-Juin Chang, Peng Fang, Paul Jamason, Ian MacLeod, Linette
Prawirodirdjo, Melinda Squibb, George Wadsworth (SOPAC); Danan Dong, Sue
Owen (JPL)
PI’s: Marlon Pierce, Indiana University (and above PI’s)
Robert Granat, Jay Parker (JPL), Galip Aydin (IU) (and above)
INDIGO: Inter-Service Data Integration for Geodetic Operations;
NASA REASON CAN
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PI: Ruth Neilan (JPL/IGS)
Co-I’s: Angie Moore, Frank Webb (JPL); Dave Stowers (JPL/IGS); Carey Noll
(NASA/GSFC/CDDIS); Mike Pearlman (CFA/ILRS); Dirk Behrend (NVI/IVS)
GPS Explorer - IGS AC Workshop - Miami 2008
GPS Explorer Background
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5-year NASA REASoN project (GPS Data Products): deliver
analysis products using newer IT standards
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NASA ACCESS project (MOSES): users perform modeling
via portlets
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Portlet-based web portal; web 2.0 (mapping, inter-portlet
communication)
Develop/use standard formats (XML) and methods (web services) for
improved metadata and data exchange
Apply various time series models (QOCA, RDAHMM)
Extend to INDIGO: integration of multiple space
geodetic techniques
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Leverage GPS Explorer technologies
GNSS/VLBI/SLR/DORIS: provide uniform methods of data retrieval
GPS Explorer - IGS AC Workshop - Miami 2008
GPS Explorer Framework
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Uses the
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java-based windows in web portal with user controls; can be used in other
portal frameworks (JSR-168 standard)
user accounts; save data/results for future viewing
Employs a workflow/dashboard approach
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users select and save groups of GPS sites via mapping portlet. Data
queries, modeling operations are performed on these in other tabbed pages.
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Inter-portlet communication
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Dynamic content produced via calls to back-end web
services
GPS Explorer - IGS AC Workshop - Miami 2008
GPS Explorer Portal: Content
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Mapping Interface
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SOMI: Scripps Online Mapping Interface
• University of Minnesota MapServer; input data layers stored at SOPAC (e.g., fault
lines)
• Draw bounding boxes to dynamically select sites
• Recent performance boost - faster map loading
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Migrating to OpenLayers
• open source version of Google Maps
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Processed GPS coordinates
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millions of xyz coordinates from SOPAC/JPL/REASON
combination/PBO combination
dynamically queryable and exportable to urls
GPS Time Series, Velocities, Strain Maps
GPS Explorer - IGS AC Workshop - Miami 2008
GPS Explorer Web Demonstration
GPS Explorer - IGS AC Workshop - Miami 2008
GPS Explorer Portal: Geophysical
Resource Web Services
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Standardized approach to data submission/retrieval
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Inter-agency data exchange of processing metadata,
coordinates
Use XML standards
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Geography Markup Language (GML): represent
features/geometry/reference systems/time
• observation collections; filter encoding
• transfer XML via SOAP/web services
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Independent server-side code
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GPS Explorer is only a client
Call web services from other web pages/sites, command-line
utilities, etc.
GPS Explorer - IGS AC Workshop - Miami 2008
SOPAC INDIGO Support:
XML IGS Site Logs
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Overview: http://sopac.ucsd.edu/projects/xml
Sample XML IGS Site Log
<igsSiteLog
xmlns="http://sopac.ucsd.edu/ns/geodesy/doc/igsSiteLog/2004"
xmlns:mi="http://sopac.ucsd.edu/ns/geodesy/doc/igsSiteLog/monumentInfo/2004"
xmlns:equip="http://sopac.ucsd.edu/ns/geodesy/doc/igsSiteLog/equipment/2004" xsi:schemaLocation="http://sopac.ucsd.edu/ns/geodesy/doc/igsSiteLog/2004 http://sopac.ucs
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<siteIdentification>
<mi:siteName>Scripps 5 - Mt. Soledad</mi:siteName>
<mi:fourCharacterID>SIO5</mi:fourCharacterID>
<mi:monumentInscription>SIO5 ECCS</mi:monumentInscription>
<mi:iersDOMESNumber>40460M006</mi:iersDOMESNumber>
</siteIdentification>
<siteLocation>
<mi:city>La Jolla</mi:city>
<mi:state>California</mi:state>
<mi:country>USA</mi:country>
<mi:approximatePositionITRF>
<mi:xCoordinateInMeters>-2456115.13</mi:xCoordinateInMeters>
<mi:yCoordinateInMeters>-4768905.79</mi:yCoordinateInMeters>
<mi:zCoordinateInMeters>3439232.44</mi:zCoordinateInMeters>
<mi:latitude-North>+325024.00</mi:latitude-North>
<mi:longitude-East>-1171500.00</mi:longitude-East>
<mi:elevation-m_ellips.>185.53</mi:elevation-m_ellips.>
</mi:approximatePositionITRF>
</siteLocation>
<gnssReceiver>
<equip:receiverType>ASHTECH Z-XII3</equip:receiverType>
<equip:satelliteSystem>GPS</equip:satelliteSystem>
<equip:serialNumber>LP02814</equip:serialNumber>
<equip:firmwareVersion>CD00</equip:firmwareVersion>
<equip:dateInstalled>2002-05-15T00:00Z</equip:dateInstalled>
<equip:dateRemoved>2003-01-09T00:00Z</equip:dateRemoved>
</gnssReceiver>
<gnssAntenna>
<equip:antennaType>ASH701945B_M</equip:antennaType>
<equip:serialNumber>CR519991867</equip:serialNumber>
<equip:antennaReferencePoint>BPA</equip:antennaReferencePoint>
<equip:marker-arpUpEcc.>0.0083</equip:marker-arpUpEcc.>
<equip:dateInstalled>2002-05-15T00:00Z</equip:dateInstalled>
<equip:dateRemoved>2004-09-29T00:00Z</equip:dateRemoved>
<equip:notes></equip:notes>
</gnssAntenna>
GPS Explorer - IGS AC Workshop - Miami 2008
GPS Explorer Portal: INDIGO
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SOPAC and INDIGO
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Utilize IT resources and JPL collaboration in support of
IGS
Potential development areas:
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Include all GNSS sites at CDDIS/JPL/IGN
Extend GPS Explorer capabilities to include SLR/VLBI/DORIS
• Site mapping
• Common data exploration/visualization tools
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Global Seamless Archive Center (publication of data archive
holdings)
• Incorporate GPS analysis products
• Web services wrapper
GPS Explorer - IGS AC Workshop - Miami 2008
GPS Explorer Portal: Future
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Focus on IGS support via INDIGO
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How can GPSE serve as common interface for user access to
data/metadata?
Add “Products” tab
Portal name change?
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Evaluate/implement feedback from user survey, NASA website
developers
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Ingest/display new data sources
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Cross-browser compatibility
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Interactive Strain Maps
GPS Explorer - IGS AC Workshop - Miami 2008
Conclusion/Discussion
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Feedback
GPS Explorer: http://geoapp.ucsd.edu
 Click on “Feature Requests” at top of any
page
 pjamason-at-ucsd.edu
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Login Page
Site Selection
Site Data Visualization
GPS Site Processed Coordinates
GPS Site Position Time Series
GPS Site Velocities
Strain Resources
Filter Time Series: Job Setup
Filter Time Series: Output