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Glossary

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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
SDCM :

System for Differential Corrections and Monitoring
SDD :

Service Definition Document

SDD :

Service Definition Document
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
SIS :

Signal-in-Space
SIVP :

Site Integration Validation Plan
SL :

Service Level or Station de Localisation
SL0 :

Service Level 0
SL1 :

Service Level 1
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
SoL :

Safety of Life
SoL :

Safety of Life
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
SSA :

Space Situational Awareness
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
SST :

Space Surveillance and Tracking 
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
SUE :

SECRET UE/EU SECRET: the unauthorised disclosure of this information could seriously harm the essential interests of the EU or one or more of the Member States.
SUM :

Software User Manual
SV :

Space Vehicle
SVC :

Switch Virtual Circuit
SVP :

System Verification Plan or Software Verification Plan or Subsystem Verification Plan
SVs :

Space Vehicles
SVVP :

Software Verification and Validation Plan
SW :

SoftWare
SWPM :

SoftWare Project Manager
SWRU :

Software Replaceable Units
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