2. About Snowflake
• Self-financed, profitable private company
• Based in Southampton, UK
• Established in 2001
• Member of OGC since 2002
• Active in ATM since 2008
• Develop data exchange solutions within 4 markets:
3. About Snowflake
• Actively engaged in aviation pilot projects and interoperability
demonstrators over last 3 years:
OWS 6-AIM,
OWS 7-AIM,
OWS 8-AIM
4.
5. Addressing the Server Side ATM Use-Cases
• Access to AIXM and WXXM via web services
• Support for temporal query and AIXM temporality
• Suitability of ISO standards for future ATM
– Web Feature Services
– Metadata
• Proof of the FAA SWIM platform
• Security and the single authoritative source
• Compression and encryption
• ADQ implementation
– Data integrity via AIXM Business Rule enforcement
– Data audit through feature and dataset level metadata
6. OWS AIM Architecture
Aviation Decision Support Notify
Client Event
Dispatch EFB Service
Client client Subscribe
Register Push events
getFeature getFeature Post
request response update
WFS WFS-T Event Publisher
2.0 2.0 WS-Notification
Agent Pusher
Polls for
updates
Output
Queu Events
Feature
e
Table Trigger
Table
Oracle 11g FTP Directory
7. So how is it all put together …
• Baseline & Delta data delivered using:
– GO Publisher WFS - OGC Web Feature Service (WFS 2.0)
• Updates using
– GO Publisher WFS – Transactional WFS 2.0
• Data queries using:
– Filter Encoding Specification (FES 2.0)
• Temporal queries using
– Temporal Operators from (FES 2.0)
• Digital NOTAM delivered using:
– GO Publisher Agent – Batch GML publication engine
• Data delivered:
– AIXM5.1, WXXM 1.1.1 – GML 3.2.1
11. Benefits of Open Standards
• Realise the goals of SWIM:
– Interoperability through standards
– Decoupled and vendor agnostic
– Data / Net centric
• Reduce implementation time
– No need to re-invent the wheel
• Implementation flexibility
– Best of breed COTS solutions without vendor lock-in
• Follow proven best practice
– INSPIRE, OneGeology, SEIS
• Proven, mature and stable
– Developed by OGC, ratified by ISO
