1. Overview of HMA/DAIL
Overview of HMA ICDs
HMA implementation at ESA
Overall Schedule

2. Traditional HMA Context

3. HMA Overview HMA Interfaces / Topics: DAIL Definition:
Discovery (Advertisement)
Product Schema
Catalogue
Ordering
Programming
User (identity) Management
On-line Access
Information Security
DAIL Definition:
Data Access and Integration Layer shall process and route all requests and responses within a user/service facing infrastructure in a monitorable and accountable way, virtualizing the actual service locations, it shall ensure the transparent implementation of all relevant support functions for request distribution, split/join and authorisation.

4. Services Registration
EO DAIL components
EO DAIL
DAIL PORTAL
HM Services
Services Front-End
Collection Discovery
Services Registration
Service Discovery
Service Orchestration
User Management
Security
User Registration
User Operator Provider Administrator Manager
Monitoring & Control
Report Generation
Virtual File Service
Help & Documentation
… where …
GCM Ground Segment
HM/GS Services ……
GS Services
Catalogue
GS Discovery
User Management
Security
Order
Virtual File Agent
Programming
Data Access

5. Discovery (Advertisement)
Current DAIL baseline: CSW ISO profile
Implementation: GEO Network
Population for GSC-DA expects to be via DAP import
Core ISO metadata to describe collections and services
Some details e.g. schema semantics for subscribable collections still TBC
Harvesting from other discovery services TBC
See later presentations for status update on ebRIM ISO profile

6. Product Schema
Title: GML Application Schema for Earth Observation Products
Editor: CNES
Scope: A data dictionary and schema for EO product attributes, also used for GSC-DA metadata reports
Status: Stable
Issues:
# degrees of freedom to express footprint geometries in GML
expectation for more attributes to be identified, and other thematic extensions to be defined (altimetry and meteo)
Updates for GML 3.2?

7. Catalogue
Title: OGC™ Catalogue Services Specification 2.0 Extension Package for ebRIM (ISO/TS ) Application Profile: Earth Observation Products
Editor: IONIC
Scope: A standard protocol and XML serialisation for <EO product> catalogue
Status: Prototype “standard” implementations
Issues:
flexibility/complexity of “filter syntax”
Standardisation of base specification
Documentation quality (examples)
Complexity of schema
Possible optimisations

8. Catalogue cont. Gateway implementations
ESA (stylesheet translation ebRIM <-> EOLI-XML)
EUMETSAT
SPOT
“Commercial” implementation supporting “charter catalogue"

9. Order Title:Ordering Services for Earth Observation Products
Editor: Datamat
Scope: Classic order, E-OA, subscription for catalogued products or collections
Status: Relatively stable
Issues:
GetQuotation support
E-OA minor changes
Use of OGC “common” approach for parameter definition
Complexity of schema

10. Programming
Request: DescribeGetFeasibility
Service: SPS
Version
SensorID
InstrumentshortName:
SensorMode:
Spot SPS Façade
request
response
Title:OpenGIS® Sensor Planning Service Application Profile for EO Sensors
Editor: SPOT
Scope: Future acquisitions and coverage order programming (feasibility and submission)
Status: Relatively stable, early prototype implementations
Issues:
High degree of flexibility of schema and lack of “concrete” implementation in specification
Documentation quality (examples)
Link with ordering specification
Standardisation

11. User Management
Title: User Management Interfaces for Earth Observation Services
Editor: Spacebel
Scope: Federated user management and security context for HMA services
Status: Relatively stable
Issues:
Completeness of documentation, examples
Precise definition of encryption / security
Support from COTS
Implications of ISMS towards other GS implementations

12. Online Access Some definitions Online Collection E-OA WMS WCS VFS
URLs available from catalogue, authorisation “issue”
E-OA
See ordering services ICD
WMS
Portrayal services (jpg access to geo-rectified data / browse)
WCS
Data services (xyz access to geo-rectified data)
VFS
Virtualised ftp service
WMS Example:
GetMap request / response:
&TIME= /
greyscale false colour pseudcolour
(SAR) (optical) (geo/bio-physical)

13. HMA Implementation in ESA-GS
A “native” implementation of HMA IF/s in ESA-GS
Catalogue
Order
WMS
User Management
A “prototype” implementation of
Programming
Update of clients (including MMOHS) to support HMA Interfaces
Major evolution of “user access facility”
De-commissioning of MUIS (retirement of DSM, OFS, GIP, UMS)
Simpler configuration to ease management of significant number of datasets

14. Overall status and schedule
2008
2009
Jan
Feb
Mar
Apr Ma
Jun
Jul Au Se
Oct No De
EO DAIL Phase - 1
SRR
PDR
CDR
AR/FAT
PORR
EO DAIL Phase-2
DAIL schedule current plan from consortium
Ie. includes first announced delay
DAIL ready for GSC integration with early avail GS
HMA-E Phase - 2
CDR-b
PDR
CDR-a
Reference implementations of HMA interfaces at ESA-GS based on COTS and re-use prototype,
ready for DAIL I&V
Full “native” implementation at ESA-GS, ready for DAIL I&V