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Glossary

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I/F :

InterFace
I/S :

Interference / Signal
IALA :

International Association of Lighthouse Authorities
IAP :

Interoperability Action Plan
IATA :

International Air Transport Association
ICAO :

International Civil Aviation Organisation
ICB :

Interface Control Board
ICD :

Interface Control Document
ICO :

Intermediate Circular Orbit
ICRB :

Interna Change Review Board
IDEF0 :

Integrated Design Functional model
IERS :

International Earth Rotation Service
IF :

Intermediate Frequency
IFF :

Identifier Friend (or Foe)
IGP :

Ionospheric Grid Points
IGS :

International GPS Service for Geodynalics
IKD :

In Kind Delivery
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
IOD :

Issue Of Data or Issuance Of Data
IODC :

Issuance Of Data Clock
IODE :

Issuance Of Data Ephemeris
IODI :

Issuance Of Data Ionosphere
IODP :

Issuance Of Data PRN
IOP :

Initial Operations Phase
IOR :

INMARSAT III – Indian Ocean Region
IoT :

Internet of Things
IP :

Internet Protocol
IPP :

Ionospheric Pierce Point
IRD :

Interface Requirements Document
IRS :

Inertial Reference System
ISDN :

Integrated Services Digital Network
ISNS :

International Satellite Navigation System
ISO :

International Organization for Standardization
ISOP :

In Service Operations Phase
ISVV :

Independent Software Verification and Validation
ITRF :

International Terrestrial Reference Frame
ITT :

Invitation To Tender
ITU :

International Time Unit
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