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ESA Catalogue Activities

ESA Catalogue Activities. A whirlwind tour of ESA’s catalogue activities overview of the architecture of ESA's catalogue services Highlighting … XML front end to MUIS proposed XML back end to INFEO ISO 19115 compliant XML schema for all new catalogue initiatives. Rolling NRT Service.

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ESA Catalogue Activities

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  1. ESA Catalogue Activities • A whirlwind tour of ESA’s catalogue activities • overview of the architecture of ESA's catalogue services • Highlighting … • XML front end to MUIS • proposed XML back end to INFEO • ISO 19115 compliant XML schema for all new catalogue initiatives CEOS/ICS 14 May 2002

  2. Rolling NRT Service PAF-Local Browse Browse Processing Processing On-line Archive On-line Archive MUIS PI /End User UserCatalogue EOLIWeb I/F Browse Flight Operations On-lineArchive INFEOCEOS/GISInterop. OpenGIS API On-lineOrder Core Service Facilities User Service Facilities NRT Dissemination AMSLocal Archive Acquisition Production Handling Station(s) Master Catalogue AMSBackup Archive Mission Planning future Value Adder Order Handling Coordination Center(s) past AMSLocal Archive Processing/ArchivingCenters Production Handling Distr.Entity Dissemination CEOS/ICS 14 May 2002

  3. Master Catalogue • Secure, Complete catalogue • Behind firewall • Complete reference for all satellite acquisitions and products • Archive reference database for Order Desk • Currently being upgraded for new missions and new technology • Metadata design ( XML interface ) is compliant with ISO 19115 standard definition for Metadata management • Prepared for XML exchange with other agencies • Documented in Multi Mission Master Catalogue Metadata XML ICD and .xsd CEOS/ICS 14 May 2002

  4. User Services Catalogue (MUIS) • MUIS “multi-mission user and information services” • Routinely synchronised with the master catalogue • Summarises acquisitions for easier user access • Filters/hides various data (e.g. from cal/val) • High performance, optimised for user query • Achieved through indexing using polar orbit model of acquisitions • Provides services for many clients – EOLI, INFEO and others … CEOS/ICS 14 May 2002

  5. MUIS architecture muis-env.esrin.esa.it INFEO-Gateway EOLI-C Server Port 8080 DSM SDS GDS UMS IDS PBS OFS Operational MUIS-C CEOS/ICS 14 May 2002

  6. Catalogue User Interface (EOLI) • EOLI “Earthnet Online Interactive” • Advanced features as required for specific users • E.g. Interfometry pair identification • ESA ordering options / scene selection etc. • Aligned with data policy for ESA’s principal investigator community (project quota’s etc.) • Latest addition EOLI-stand alone • Harmonized with existing EOLI Interfaces • Java stand-alone application so multi-platform (Windows, Unix, Linux, Macos X) • On-line access to MUIS (Inventory, GIS maps, Browse, Ordering, User Set) • Off-line mode (Local Inventory, Local map, Browse on CD-ROM, server synchronized Shop Cart and User Set) CEOS/ICS 14 May 2002

  7. Interoperability Layer (INFEO) • CEOS interoperability layer is provided by INFEO • Side-by-side access to ESA + any other catalogues • See previous presentation CEOS/ICS 14 May 2002

  8. MUIS ISO 19115 XML Front End • Users are wanting more than just a graphical interface to the user services • For Distributing Entities, GRID, web-service chaining … • MUIS’ DSM being evolved to support an XML front end to present catalogue as web-service via SOAP/HTTP • searchRequest: this message allows to identify products inside a single collection via a search condition and to request the number of hits or product metadata in differentformats as Response. • presentRequest: this message allows to retrieve (multiple) product metadata within a single collection by providing the product identification. • response: this message contains the result in form of number of hits or returned product metadata. • Request/Response’s inspired by OGC • Anticipated delivery 2003 CEOS/ICS 14 May 2002

  9. INFEO ISO19115 XML Back End • Current INFEO gateways are z39.50 translators • Fewer industrial support for z39.50 • Generic translation to SQL looses performance • Therefore, INFEO XML-back end is proposed • Simplified interface for other providers (based on what’s required for EOLI like client) • Stateless interface • ISO 19115 compliant XML message • The “proof” of implementation will be MUIS’ new front end • Any other ISO compliant data providers ? • Anticipated delivery 2004 CEOS/ICS 14 May 2002

  10. XML schema compliant with ISO19115 • Extensive analysis of standards and schemas used to define an XML interface to ESA catalogue services • References: ISO, GML, CIP, FGDC, OGC • Uses CEOS & ESA experience • Satellite domain extensions defined • Performance • Reference to browse URL data rather than binary data transfer in XML • Efficient tag set • Readability • Although, staying ISO compliant means a few tags are not at first intuitive and few tags are not so useful • Available for review • For master catalogue as Multi Mission Master Catalogue Metadata XML ICD and .xsd • For user services as Earthnet Online XML Front End ICD, .wsdl and .xsd CEOS/ICS 14 May 2002

  11. XML Details • (see spreadsheet analysis) • For domain extensions • ( ) • For product identifier • Citation resTitle = productID • For data content types • Image details added • Language independent enumerative lists • (asc/desc = 0/1) CEOS/ICS 14 May 2002

  12. 02 • ESA are proposing a programme consolidating ground segment activities to support multi-mission data access across European agencies • INFEO experience will be vital part, but to be complimented by e.g. • Mission planning agreements • Order-desk agreements • Different levels of integration between European EO enterprises foreseen CEOS/ICS 14 May 2002

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