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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 Data Products for Solid Earth Science; NASA REASON CAN

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gps explorer overview and extension to indigo http geoapp ucsd edu http indigo nasa gov
GPS Explorer - IGS AC Workshop - Miami 2008GPS Explorer: Overview and Extension to INDIGOhttp://geoapp.ucsd.eduhttp://indigo.nasa.gov

Paul Jamason | Scripps Orbit and Permanent Array Center (SOPAC )

IGS Analysis Center Workshop, Miami, 2008

gps explorer indigo participants
GPS Explorer - IGS AC Workshop - Miami 2008

GPS Data Products for Solid Earth Science; NASA REASON CAN

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)

Modeling On-the-Fly Solutions for Earth Science; NASA ACCESS Project

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

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/INDIGO: Participants
gps explorer background
GPS Explorer - IGS AC Workshop - Miami 2008GPS Explorer Background
  • 5-year NASA REASoN project (GPS Data Products): deliver analysis products using newer IT standards
    • 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
  • NASA ACCESS project (MOSES): users perform modeling via portlets
    • Apply various time series models (QOCA, RDAHMM)
  • Extend to INDIGO: integration of multiple space geodetic techniques
    • Leverage GPS Explorer technologies
    • GNSS/VLBI/SLR/DORIS: provide uniform methods of data retrieval
gps explorer framework
GPS Explorer - IGS AC Workshop - Miami 2008GPS Explorer Framework
  • Uses the
    • 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
    • users select and save groups of GPS sites via mapping portlet. Data queries, modeling operations are performed on these in other tabbed pages.
  • Inter-portlet communication
  • Dynamic content produced via calls to back-end web services
gps explorer portal content
GPS Explorer - IGS AC Workshop - Miami 2008GPS Explorer Portal: Content
  • Mapping Interface
    • 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
    • Migrating to OpenLayers
      • open source version of Google Maps
  • Processed GPS coordinates
    • millions of xyz coordinates from SOPAC/JPL/REASON combination/PBO combination
    • dynamically queryable and exportable to urls
  • GPS Time Series, Velocities, Strain Maps
slide6
GPS Explorer - IGS AC Workshop - Miami 2008

GPS Explorer Web Demonstration

gps explorer portal geophysical resource web services
GPS Explorer - IGS AC Workshop - Miami 2008GPS Explorer Portal: Geophysical Resource Web Services
  • Standardized approach to data submission/retrieval
    • Inter-agency data exchange of processing metadata, coordinates
  • Use XML standards
    • Geography Markup Language (GML): represent features/geometry/reference systems/time
      • observation collections; filter encoding
      • transfer XML via SOAP/web services
  • Independent server-side code
    • GPS Explorer is only a client
    • Call web services from other web pages/sites, command-line utilities, etc.
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.ucsd.edu/ns/geodesy/doc/igsSiteLog/2004/igsSiteLog.xsd"

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>

Sample XML IGS Site Log
gps explorer portal indigo
GPS Explorer - IGS AC Workshop - Miami 2008GPS Explorer Portal: INDIGO
  • SOPAC and INDIGO
    • Utilize IT resources and JPL collaboration in support of IGS
  • Potential development areas:
    • Include all GNSS sites at CDDIS/JPL/IGN
    • Extend GPS Explorer capabilities to include SLR/VLBI/DORIS
      • Site mapping
      • Common data exploration/visualization tools
    • Global Seamless Archive Center (publication of data archive holdings)
      • Incorporate GPS analysis products
      • Web services wrapper
gps explorer portal future
GPS Explorer - IGS AC Workshop - Miami 2008GPS Explorer Portal: Future
  • Focus on IGS support via INDIGO
    • How can GPSE serve as common interface for user access to data/metadata?
    • Add “Products” tab
    • Portal name change?
  • Evaluate/implement feedback from user survey, NASA website developers
  • Ingest/display new data sources
  • Cross-browser compatibility
  • Interactive Strain Maps
conclusion discussion
GPS Explorer - IGS AC Workshop - Miami 2008Conclusion/Discussion
  • Feedback
    • GPS Explorer: http://geoapp.ucsd.edu
    • Click on “Feature Requests” at top of any page
    • pjamason-at-ucsd.edu
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