Glossary

A B C D E F G H I J K L M N O P R S T U W
  • SAR:

    Search and Rescue

  • SAR RLS:

    Galileo Search and Rescue Return Link Service

  • SAS:

    Signal Authentication Service

  • SatCen:

    European Union Satellite Centre

  • SBAS:

    Satellite Based Augmentation System

  • SCC:

    Satellite Control Centre

  • SDD:

    Service Definition Document

  • SDM:

    System Definition Manual

  • SESAR:

    Single European Sky ATM Research

  • SGSC:

    SAR/Galileo Service Centre

  • SIS:

    Signal-in-Space

  • 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

  • SNAPAS:

    Satellite Navigation Performance Analysis Software

  • SNT:

    Satellite Navigation Transponder

  • SOC:

    Security Operations Centre

  • SoL:

    Safety of Life

  • SOLAS:

    Safety of Life At Sea

  • SPS:

    Standard Positioning Service

  • SSA:

    Space Situational Awareness

  • SST:

    Space Surveillance and Tracking 

  • 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.

  • SWE:

    Space Weather Events