Acronyms Q-S

The following abbreviations and acronyms are used by satellite navigation specialists. If you know of any others that need to be added to the list or if you have any corrections to make, please send us an email.

A-D | E-I | J-P | Q-S | T-Z


QA Quality Assurance
QFE Barometric pressure at runway threshold
QMS Quality Management System
QoS Quality of Service
QR Qualification Review
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
RIMS Ranging and Integrity Monitoring Station or Remote Integrity Monitoring Station
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
S/C SpaceCraft
S/W SoftWare
SA Selective Availability
SADT Structure Analysis and Design Technical
SAN Satellite Access Node
SARP(s) Standards And Recommended Practices
SAW Surface Acoustic Wave
SBAS Satellite Based Augmentation System
SC Software Component
SCAR Software Component Acceptance Review
SCAT-I Special CATegory I
SCC Satellite Control Centre
SCL Station de Connexion et Localisation
SCM Software Configuration Management
SCMP Software Configuration Management Plan
SCO Software Change Order
SCQR/R Software Component Qualification Readiness Review
SCR Software Change Request
SCSI Small Computer System Interface
SDM System Definition Manual
SE EGNOS Subsystem Element
SECT System Engineering Core Team
SeKO Set Kick Off
SEP Support Equipment Plan
SESAR Single European Sky ATM Research
SFVP Support Facility Verification Plan
SGS Soviet Geocentric System
SGS-90 Soviet Geodetic System
SIS Signal In Space
SIVP Site Integration Validation Plan
SL Service Level or Station de Localisation
SLA Service Level Agreement (with network service provider)
SLRD System Level Requirements Document or SL Requirements Document
SMR Software Modification Report
SNA Satellite Navigation Application
SNAPAS Satellite Navigation Performance Analysis Software
SNMP Simple Network Management Protocol
SNR Signal to Noise Ratio
SNT Satellite Navigation Transponder
SOC Spacecraft Operation Centre
SOLAS Safety of Life At Sea
SOP System Operation Plan
SOW Statement Of Work
SPACS Simplified Position Accuracy Calculation Software
SPM System Project Management
SPMP System Project Management Plan or Software Project Management Plan
SPR Software Problem Report
SPS Standard Positioning Service
SQAP Software Quality Assurance Plan
SQL Software Query Language
SQP System Qualification Plan
SQR System Qualification Review
SR Standard Receiver or Software Requirements
SR/R Software Requirements Review
SRAM Static Random Access Memory
SRB Software Review Board
SRD System Requirements Document or Software Requirement Document
SRN Software Release Note
SSAR Sub System Acceptance Review
SSATR Sub System Acceptance Test Review
SSCDR Sub System CDR
SSDD System Segment Design Document
SSFQR Sub System Factory Qualification Review
SSKO Sub System Kick Off
SSN Sun Spot Number
SSPA Solid State Power Amplifier
SSPDR Sub System PDR
SSR Site Selection Review
SSRD Sub-System Requirements Document
SSTRR Sub System Test Readiness Review
ST System Testing
STD Software Transfer Document
STEP1 R-GEO augmentation
STEP2 GIC augmentation
STEP3 WAD augmentation
STNA Service Technique Navigation Aerienne (F)
STR System Test Readiness
STRR System Test Readiness Review
SU SUpplier
SUM Software User Manual
SV Space Vehicle
SVC Switch Virtual Circuit
SVP System Verification Plan or Software Verification Plan or Subsystem Verification Plan
SVVP Software Verification and Validation Plan
SW SoftWare
SWPM SoftWare Project Manager
SWRU Software Replaceable Units