Glossary
- IALA:International Association of Lighthouse Authorities
- IATA:International Air Transport Association
- ICAO:International Civil Aviation Organisation
- IERS:International Earth Rotation Service
- IGS:International GPS Service for Geodynalics
- ILS:Instrument Landing System or Integrated Logistics Support
- IMO:International Maritime Organisation
- INC:Inmarsat Navigation Center
- INMARSAT:International MARitime SATellite
- INS:Inertial Navigation System
- IOC:Initial Operational Capability
- ISO:
International Organization for Standardization
- ITT:Invitation To Tender
- ITU:International Time Unit
- IoT:
Internet of Things
- IDD:
Internet Data Distribution
- IRIS²:
Infrastructure for Resilience, Interconnectivity and Security by Satellite
- IOT:
In-Orbit Testing Station