Heterogeneous Missions Accessibility(HMA)
HMA takes into account the requirements for the future ESA
Earth Observation ground segment and provides a harmonised
and standardised access to ESA mission data and also to other
mission ground segment through the EO Data Access Integration
The EO Data Access Integration
Layer is flexible such to support specific missions or national facilities
Within GMES space component the EO-DAIL is part of the Coordinated
Data Access System (CDS) infrastructure and therefore
supports the GMES operational scenarios needed to provide the
GMES Services with the required data.
HMA is using the Open Geospatial Consortium (OGC) as the forum
to discuss the proposed standards; CEN was as well instrumental
in formalising an initial set of standards. OGC is an international
industry consortium, government agencies and universities
participating in a consensus process to develop publicly
available interface standards. OGC standards support interoperable
solutions that "geo-enable" the Web, location-based services, and
mainstream information technology, therefore enlarging the market
potential for EO related applications.
The HMA information models used to describe collections,
datasets and Earth Observation products rely on well established
International Organization for Standardization (ISO) ISO and Open
GeoSpatial Consortium - OGC standards.
- EO collection metadata: ISO 19115 Geographic Information - Metadata.
- EO product metadata: OGC’s GML Application Schema for EO Products
- Collection and service discovery: OGC’s Cataloguing of ISO Metadata using the ebRIM profile of CS-W
- Catalogue Service: OGC’s Catalogue Services Specification 2.0 Extension Package for ebRIM Application Profile: Earth Observation
- Order: OGC’s Ordering Services for Earth Observation Products
- Feasibility Analysis: OGC’s Sensor Planning Service Application Profile for EO Sensors
- Online Data Acces: OGC’s WMS EO Extension
- Identity (User) Management: OGC’s User Management Interfaces for Earth Observation Services.