Glossary
- RAAS:Regional Area Augmentation System
- RAIM:Receiver Autonomous Integrity Monitoring
- RAM:Reliability Availability and Maintainability or Random Access Memory
- RAMS:Reliability Availability, Maintainability and Safety
- RB:Review Board
- RCF:Ranging Control Facility
- RCS:Revision Control System
- RCVR:Receiver
- RD:Requirements Document or Reference Document
- REC:Range Error Correction
- RF:Radio Frequency
- RFC:RF Conversion or Request For Change
- RFD:Request For Deviation
- RFDC:RF Down Converter
- RFE:RF front End
- RFI:Radio Frequency Interference
- RFLAB:RF measurement LABoratory
- RFQ:Request For Quotation
- RFW:Request For Waiver
- R-GEO:Ranging via GEO satellites
- RGIC:Ranging and Ground Integrity Channel
- RGS:Ranging Ground Segment
- RHC:Right Hand Circularly polarised
- RHCP:Right Hand Circular Polarisation
- RID:Review Item Discrepancy
- RIMSRD:RIMS Requirements Document
- RMS:Root Mean Square
- RNAV:Radio NAVigation
- RNP:Required Navigation Performance or Required Navigation Parameters
- ROD:Review Of Design
- ROR:Range Only Radar
- RPU:Receiver Processing Unit
- RRC:Range-Rate Corrections
- RS:Remote Station or Reference Station
- RST:Reference System Time
- RTCA:Radio Technical Commission for Aeronautics or Radio Technical Committee of America
- RTK:Real Time Kinematics
- RTOS:Real Time Operating System
- RTSS:Real-Time Simulation Segment
- RX:Receiver
- RIMS:
Ranging and Integrity Monitoring Station
- RTCM:
Radio Technical Commission for Maritime Services
- RUE:
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