gps explorer: overview and extension to indigo geoapp.ucsd
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GPS Explorer: Overview and Extension to INDIGO
http://geoapp.ucsd.edu
Paul Jamason | Scripps Orbit and Permanent Array Center (SOPAC )
IGS Analysis Center Workshop, Miami, 2008
GPS Explorer Background
NASA REASoN project to provide GPS data products/services using new web technologies/standards project overview: http://reason.scign.org java-based web portal; web 2.0 (mapping, inter-portlet
communication) develop common formats (xml) and methods (web services) for
improved metadata and data exchange Geophysical Resource Web Services:
http://reason.scign.org/scignDataPortal/grwsSummary.jsp
NASA MOSES project to allow users to perform modeling in a portal context application of various time series models
GPS Explorer Framework
Uses the JSR-168 compliant portlets (java-based windows in portal with user controls;
distributable to other portals) user logins; save data/results for future viewing standard look/feel across pages; easy configuration
Employs a workflow/dashboard approach users select and save groups of GPS sites via mapping portlet. Data
queries, modeling operations are performed throughout portal on saved
groups. Inter-portlet communication Dynamic content produced via calls to back-end web
services
GPS Explorer Portal: Mapping
SOMI: Scripps Online Mapping Interface University of Minnesota MapServer; input data layers stored at SOPAC (e.g.,
fault lines) interactive velocity vectors users can draw bounding boxes to select sites recent performance optimization
Migrating to OpenLayers open source API user community utilize non-google data layers MapServer; tile caching
GPS Explorer Portal: Products
Processed GPS coordinates millions of xyz coordinates from SOPAC/JPL/REASON combination/PBO dynamically queryable and exportable to urls
GPS Time Series layer time series from different sources/sites via Java Applet display time series dynamically by clicking sites on map
Velocities view/layer velocity vectors for various sources/reference frames
Strain Maps under development
(GPS Explorer Web Demonstration)
GPS Explorer Portal: Geophysical Resource Web Services Standardized approach to data submission/retrieval
Inter-agency data exchange
Use XML standards Geography Markup Language (GML): represent
features/geometry/reference systems/time• observation collections; filter encoding• transfer XML via SOAP/web services• alternatives: JSON, REST
Advantages: Independent server-side code. call web services from other
web pages/sites, command-line utilities, etc. Adaptable - e.g., REASoN -> INDIGO: new web services
XML and Geodesy at SOPAC: IGS Site Logs
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.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>
GPS Explorer Portal: INDIGO
SOPAC and INDIGO Inter-service Data Integration for Geodetic Operations
• systems enabling the simultaneous use of multiple space geodetic techniques
Utilize IT resources and JPL collaboration in support of IGS
Potential development areas: Include all GNSS sites at CDDIS/JPL/IGN (GSAC) Extend GPS Explorer capabilities to include SLR/VLBI/DORIS
• Site mapping
• Common data exploration/visualization tools Incorporate GPS products into (next-generation?) GSAC
• Provide web services wrapper to GSAC
GPS 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 Javascript development Evaluate other portal frameworks (JBOSS)
Interactive Strain Maps
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
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