A | B | C | D | E | F | G | H | I | J K L | M | N | O | P | Q |
R | S | T | U | V | W | X Y Z #
RACH random access channel
RADAR radio detection and ranging
RAIM receiver autonomous integrity monitoring (GPS)
RAM radar-absorbing material
RAM random access memory
RAP radar-absorbing paint
RAS radio astronomy synthesis
RBC radiation boundary conditions
RBER residual bit error ratio
RBS radio base station
RBW resolution bandwidth
RCS radar cross section
RDS radio data system
RELP residually excited linear predictive coder
RF radio frequency
RFID radio frequency identification
RFMU radio frequency monitoring unit
RFS radio frequency simulator
RHCP right-hand circular polarization
RIE reactive ion etch
RIN relative intensity noise
RISC reduced instruction set computing
RL rotating linear (antenna pattern)
RLL radio local loop
RMS root mean square
RNSS radio navigation satellite service
RoHS Restriction of Hazardous Substances (European Union)
ROTHR relocatable over-the-horizon radar
RP range processor
RPT Radiated Performance Test
RRC raised-root cosine
RRE radar range equation
RSL received signal level
RSR responder
RSSI received signal strength indicator
RSU roadside unit (auto toll collecting)
RTD resistance-temperature detector (probe)
RTD round trip delay
RwoH reliability without hermeticity
RWR radar warning receiver
RX receiver/receive
RZ return to zero