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