1. HMA CDR, 5-6 September 2006, Frascati Slide 1 HMA Catalogue Update Presented By Paul Kopp On behalf of Jolyon Martin, ESA Summarising many presentations from HMA CDR/CEN workshop 6 th September, ESRIN Inputs from (JRC, FAO, Spacebel …) The ghost of Christmas future …. We trust not! I guess you had to be at the previous reviews to understand to understand

2. HMA CDR, 5-6 September 2006, Frascati Slide 2 Context From PBEO GS Task Force Scope: Earth Observation Ground Segment interfaces HMA considers the following services (interfaces) Catalogue, Ordering, Programming, On-line data access interfaces for Earth Observation Products This report concentrates on Catalogue

3. HMA CDR, 5-6 September 2006, Frascati Slide 3 Standardisation Overview Considerable effort to align catalogue access for EO data to OGC CAT standards (and those likely to be endorsed by EU SDI standards: INSPIRE) 2 profiles being developed to align to the major flavours Analysis (and pressure) to align these togeather HMA documents / proposals in blue.

4. HMA CDR, 5-6 September 2006, Frascati Slide 4 Introduction 06-079 Most focus to date on alignement with OGC ISO profile, see HMA discussion paper: OGC 06-079 Document presented in similar way as CSW ISO AP Scope: Only "datasets", not for "dataset collections" for which CSW ISO AP will be used. Objectives: Information model suitable for CSW as well as WFS XML messages for query valid w.r.t. CSW ISO AP Loose schemas (with textual restrictions) versus strict schemas

5. HMA CDR, 5-6 September 2006, Frascati Slide 5 Metadata Overview GML payload aligned with ISO 19115 (19139 schema) and 19115- part II draft. Further work required: Management of HMA metadata at collection level To be seen if ISO type definitions can be re-used further in schema Better use of GML structures (review comments from GALDOS/Ron Lake) sar.xsdohr.xsdatm.xsd hma.xsd smXML - gmd (ISO 19139) Catalogue metadata for mission type Catalogue metadata for EO products gml Schema/ namespace for radar missions Schema/ namespaces for optical missions Schema/ namespaces for atmospheric missions Generic and geometric phr.xsd xyz.xsd Catalogue metadata for specific mission Collection level metadata

6. HMA CDR, 5-6 September 2006, Frascati Slide 6 Information Model EO dataset collections and EO datasets CSW ISO AP CSW EO AP

7. HMA CDR, 5-6 September 2006, Frascati Slide 7 Information Model Layered OUTPUTSCHEMA Also "layered" queryables.

8. HMA CDR, 5-6 September 2006, Frascati Slide 8 Return catalogue properties GetCapabilities CSW EO Profile Optical Catalogue Instance Capabilities client GetRecords hmaRecord GetRecordsById ohrRecord DescribeRecord Protocol Binding Compose record structure requested by client Compose most detailed record Return schema information Stateless protocol (avoids resultset handling complexities from old z39.50 search protocol) Considerable effort to make protocol architectural neutral … e.g. applicable to two tier (client server) and three tier (middleware) implementations Push for mandatory (and only) SOAP/HTTP bindings for EO profile to avoid proliferation of methods (and allow layering of user/policy management outside the catalogue protocol)

9. HMA CDR, 5-6 September 2006, Frascati Slide 9 Distributed search The OGC idea of a distributed search is to start a search from a known location and to search transitively federated catalogues with the same set of attributes (*). Client Catalogue (local) Catalogue (FED_1) Catalogue (FED_2) Catalogue (FED_n) Cumulated resultset Catalogue searches local and distributes query Client formulates a query * source: Conterra presentation FAO workshop 27/04/2006

10. HMA CDR, 5-6 September 2006, Frascati Slide 10 Distributed search The HMA distributed search is to proposes to search federated catalogues via service orchestration, where federated catalogues are discovered in collection catalogue or selected based on collection ID. Client Service Orchestration (DAIL) Catalogue (FED_1) Catalogue (FED_2) Catalogue (FED_n) Cumulated resultset distributed query Client formulates a query

11. HMA CDR, 5-6 September 2006, Frascati Slide 11 ISO AP Implem. Guidance CSW EO AP (Datasets) Filter collections using part of original filter which relates to collection metadata GetRecords(dataset,f1+f 2) CSW ISO AP via orchestration (Datasets & dataset collections) isoRecord with Matching collections "c" client GetRecords(dataset, filter on "c",f2) isoRecord hmaRecord CSW ISO AP (Dataset collections) GetRecords(dataset collection,f1) Filter products using part of original filter which relates to product metadata For collections found in step above Combine isoRecord for collections and hmaRecord for products in new isoRecord CSW EO AP (Datasets) CSW EO AP (Datasets) Overall approach supporting two main scenarios: (1) Agency Client (2) ISO compatible client (illustrated here)

12. HMA CDR, 5-6 September 2006, Frascati Slide 12 Future work for HMA Future Work: Integrate work from ISO AP CSW RWG, e.g. WSDL, full schemas etc. Integrate comments from external reviewers Update taking into account on base specifications. Implement the proposed interfaces in the HMA prototype and existing EO Ground Segments (November) Propose CSW Application Profile for EO based on ebRIM compatible with 079-079 and 06-080 as a separate document. Implement Conformance tests (CITE) support for the CSW Application Profile for EO.

13. HMA CDR, 5-6 September 2006, Frascati Slide 13 Coordinating with JRC Trying to avoid this: See JRC interoperability experiment

14. HMA CDR, 5-6 September 2006, Frascati Slide 14 Coordinating with JRC And trying to avoid having to implement to many of these ie. Not much change since the days of INFEO

15. HMA CDR, 5-6 September 2006, Frascati Slide 15 Coordinating with FAO

16. HMA CDR, 5-6 September 2006, Frascati Slide 16 Thanks for your attention More details from Jolyon.Martin@esa.int Jolyon.Martin@esa.int See you at the OGC Technical Committee in Oct.? Not so far away on the other side of DC. Dont forget to try the crab cakes PS. Let me know if this was Pauls reaction to being asked to do another presentation on my behalf