RA |
Right Ascension |
RAC |
Random Access Channel |
RACH |
Random Access Channel |
Rad |
Radian |
RADAR |
Radio Detection And Ranging |
RADIUS |
Remote Authentication Dial In User Service |
RAF |
Rate Adjustment Factor |
RAG |
Request Handling and Assignment Information Generation |
RAM |
Random Access Memory |
RAMS |
Reliability, Availability, Maintainability and Safety |
RAN |
Radio Access Network |
RARC |
Regional Administrative Radio Conference |
RAS |
Remote Analysis System |
RA/TDMA |
Random Assignment TDMA |
RATF |
Reverberant Acoustic Test Facility |
RB |
Reference Burst |
RBER |
Residual Bit error Rate |
RBGAN |
Regional Broadband Global Area Network |
RBID |
Reference Burst Identification Procedure |
RBW |
Residual Bandwidth |
RC |
Range Coordinator |
RCC |
Radio Common Carrier |
RCC |
Reinforced Carbon-Carbon |
RCC |
Rescue Control Centre |
RCO |
Range Control Officer |
RCP |
Receive Channel Processing |
RCP |
Right-hand Circular Polarisation |
RCR |
Return Channel Router |
RCS |
Reaction Control System |
RCS |
Return Channel Satellite |
RCSBD |
Retransmitted Condensed Sub Burst Data |
RCST |
Return Channel Satellite Terminal |
RCTP |
Retransmitted Condensed (Burst) Time Plan |
RCVR |
Receiver |
RDF |
Repeater Distribution Frame |
RDG |
Receive Data Gate |
RDP |
Real-time Dynamics Processor |
RDRE |
Rotating Detonation Rocket Engine |
RDS |
Radio Data System |
RDT&E |
Research, Development, Testing and Evaluation |
RELP |
Residual Excited Linear Prediction |
REM |
Receiver Equipment Monitor |
RES |
Radio Equipment and Services |
RES |
Receive only Earth Station |
Rev |
Revolution |
RF |
Radio Frequency |
RFC |
Request For Comment |
RFI |
Radio Frequency Interference |
RfoF |
RF over Fibre |
RFP |
Request For Proposal |
RFS |
Radio Frequency Subsystem |
RFS |
Ready for Service |
RFS |
Receive Frame Synchronisation Procedure |
RFT |
Radio Frequency Terminal |
RFU |
Radio Frequency Unit |
RFW |
Request For Waiver |
RG |
Retrograde |
RGM |
Release Guard Message |
RHCP |
Right Hand Circular Polarisation |
RInc |
Relative Inclination |
RIP |
Routing Information Protocol |
RIS |
Retransmission Indication Signal |
RLC |
Radio Link Control |
RLES |
Regional Land Earth Station |
RLP |
Return Link Processor |
RLR |
Return Link Receiver |
RLV |
Reusable Launch Vehicle |
RMAC |
Remote Monitor and Control |
RMBAFN |
Reconfigurable Multibeam Antenna Feed Network |
RME |
Radiation Monitoring Equipment |
rms |
Root Mean Square |
RMS |
Remote Manipulator System |
RN |
Reference Noise |
RNC |
Radio Network Controller |
RNS |
Reliable Network Service |
R/O |
Receive Only |
RO |
Receive Only |
ROC |
Range Operations Coordinator |
ROC |
Regional Operations Control |
ROM |
Read Only Memory |
ROMES |
Receive Only Mobile Earth Station |
Roomba |
Remotely Operated Orientation and Mass Balance Adjuster |
RP-1 |
Rocket Propellant 1 (kerosene) |
RPIF |
Regional Planetary Imaging data Facilites |
rpm |
revolutions per minute |
rps |
revolutions per second |
RPS |
Radioisotope Power System |
RRM |
Radio Resource Management |
RRP |
Receiver and Ranging Processor |
RS |
Reed Solomon |
RSE |
Register Signalling Equipment |
RSM |
R2D Line Signalling Module |
RSO |
Resident Space Object |
RSP |
Receive Shift Pulse |
RSS |
Radiodetermination Satellite Service |
RSS |
Radio Switching Subsystem |
RSS |
Rotating Service Structure |
RTA |
Range Telemetry Amplifier |
RTCP |
Real Time Control Protocol |
RTD |
Research, Testing and Development |
RTF |
Return To Flight |
RTG |
Radioisotope Thermoelectric Generator |
RTLS |
Return To Launch Site |
RTLT |
Round Trip Light Time |
RTM |
Redundant Telemetry Module |
RTP |
Real Time Protocol |
RTS |
Request To Send |
RTT |
Radio Transmission Technologies |
RUD |
Receive Channel Status Update and Overload Channel Decoding |
RUD |
Rapid Unplanned/Unscheduled Disassembly |
RUS |
Raptor powered Upper Stage |
RVel |
Relative Velocity |
RX |
Receive, Receiver |
RxAM |
Received Assignment Message |
RZ |
Return To Zero |