Satellite Technology Glossary

Satellite Technology Glossary

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There are 280 names in this directory beginning with the letter S.
S or s
S Distance along a path (phys., chem.) Specific Entropy

S-meter
Signal-Strength meter

S/C
Spacecraft

S/C Key
The term used to indicate a unique location within a decryption unit on-board a S/C

S/EOS
Standard Earth Observation Satellite

S/I
Signal-to-Interference Ratio

S/N
Signal-to-Noise Ratio

S/Q
Signal Quality Value

S+DX
Speech+Duplex (Simultaneous Speech and Telegraphy in a Voice Channel)

SABM
Set Asynchronous Balanced Mode command

SAC
Spin Axis Control

SAD
Space Antennae Diversity

SADA
Solar Array Drive Assembly

SADE
Solar Array Drive Electronics

SAGR
Supergroup Automatic Gain Regulator

SAIL
Shuttle Avionics Integration Laboratory (NASA - USA)

SAM
Selective Assignment Message

SAMOS
Air Force Reconnaissance Satellite (USA)

SAMS
Stratospheric and Mesospheric Sounder

SAMSARS
Satellite-Based Maritime Search and Rescue System

SAR
Search and Rescue

SARIT
Satellite Network (Italy)

SARSAT
Search and Rescue Satellite (US, Russian Federation, France and Canada)

SAS
Small Astronomical Satellite

SATCOM
Domestic satellite network (Owned by RCA American Communications, Inc. - USA)

SAW
Surface Acoustic Wave

SAX
Small Automatic Exchange

SB
Simultaneous Broadcast

SBPC
Single Burst per Transmitter/Transponder

SBTP
Secondary Burst Time Plan

SC
Service Channel or Satellite Channel

SCA
Small Communications Antenna

SCATHA
Spacecraft Charging at High Altitudes Scientific Satellite (USA)

SCC
Satellite Control Center (Intelsat)

SCD
Service Commencement Date

SCE
Spacecraft Control Electronics

SCF
Satellite/Spacecraft Control Facility

SCFM
Sub-carrier Frequency Modulation

SCG
Signal/Synchronous Command Generator

SCH
Seizures per Circuit per Hour

SCIM
Speech Communications Index Meter

SCMID
Serial Command ID

SCN
Software Change Notice

SCNA
Sudden Cosmic Noise Absorption

Scope
Oscilloscope

SCOR
Scientific Committee On Ocean Research

SCP
Satellite Channel Processing Procedure

SCPC
PCM/PSK Telecommunications Equipment

SCPC/CFM
Single Channel Per Carrier/Companded Frequency Modulation

SCPDM
Suppressed Clock Pulse Duration Modulation

SCR
Selective Chopper Radiometer

SCS
Silicon-Controlled Switch

SCTO
Stalled Call Timed Out

SCU
System Control Signal Unit

SCUC
Satellite Communications Users Conference

SD
Single Destinational

SD-SDI
Serial Digital Interface

SDCV
Spatially-dedicated Continuously-visible

SDF
Supergroup Distribution Frame

SDH
Synchronous Digital Hierarchy

SDI
Strategic Defense Initiative (USA)

SDL
Specification and Description Language

SDMA
Space Domain/Division Multiple Access

SDNTX
Selective Do Not Transmit

SDP
Solar Drum Positioner

SDRO
Selected Data Retrieval Output

SDS
Satellite Diagnostic Subsystem

SDU
Spun Driver Unit

SEA
Sudden Enhancement of Atmospherics

SEC
American Security Carrier

SED
Service End Date

SEER
Secondary Electron Emission Ratio

SEG
System Engineering Group

SEL
Selected

SELCAL
Selective Call/Calling

SEM
Scanning Electron Microscope

SEMS
Space Environment Monitor Subsystems

SEN
SENSE command

SEOS
Synchronous Earth Observation Satellite

SEQ
Sequence

Service Availability
The percentage of time within the total time for a service ordered by a customer during which the service is available to successfully transfer customer content

SES
Severely Errored Seconds

SET
European Telecommunications Working Group of the CEPT

SETAB
(Working standard with subscriber's equipment)

SETED
(Working standard with an electrodynamic microphone and receiver

SEU
Single Event Upset

SFD
Saturation Flux Density

SFERT
Master Telephone Transmission Reference System

SFOF
Space Flight Operation Facility

SG
Super Group (CCIR/CCITT)

SGCS
Satellite Ground Control System (Intelsat)

SGDF
Supergroup Distribution Frame

SGP
Simplified General Perturbation

SHA
Sidereal Hour Angle

SHAR
Sriharikota Island Launch Complex (India)

SHE
Spacecraft Handling Equipment

SHF
Super High Frequency 3,000 - 30,000 MHz Shuttle Launcher (NASA - USA)

SI
Speech Interpolation

SICC
Spanish International Communications Corporation (USA)

SICL
HP's Standard Instrument Control Library

SID
Sudden Ionospheric Disturbance

SIDEREAL
Sidereal clock time relative to orbit node

SIDM
Single Integration Delta Modulation

SIG
Senior Interagency Group

SIM
Simulator

SIMP
Satellite Interface Message Processor

SIR
Selected for Internal Reference

SIRIO
Experimental Satellite Network (Italy)

SIT
Static Induction Transistor

SITC
Satellite International Television Center

SITE
Satellite Instructional TV Experiment

SIU
Signaling Interface Unit

SIV
Solar and Interplanetary Variability

SLA
Service Level Agreement

SLL
Satellite Line Link

SLMS
Selective Level Measurement Set

SLOHA
Slotted ALOHA

SLS
Side Lobe Suppression

SLT
Satellite Local Time

SMA
Search Mode Acquisition

SMDU
Stepper Motor Drive Unit

SME
Solar Mesosphere Explorer (NASA Satellite - USA)

SMM
Solar Maximum Mission (NASA Satellite - USA)

SMS
Shuttle Mission Simulator

SMY
Solar Maximum Year

SNDTX
Selective Do Not Transmit code

SNF
System Noise Figure

SNG
Satellite Newsgathering

SNL
SYNCH Loss

SNR
Signal-to-Noise Ratio

SNT
System Noise Temperature

SO
Shift-Out

SOC
Satellite Operations Complex

SOD
Satellite Operations Department

SOE
Sequence of Events

SOF
Satisfactory Operation Factor

SOH
Start of Heading

SOI
Silicon-On-Isolator

SOLAS
Safety Of Life At Sea

SOM
Space Oblique Mercator

SOP
Single Ocean Payload

SORF
Start of Receive Frame

SORMF
Start of Receive Multiframe

SOS
Silicon-On-Sapphire

SOTF
Start Of Transmit Frame

SOTMF
Start Of Transmit Multiframe

SOW
Statement of Work

Soyuz
Two-Man Spacecraft (Russian Federation)

SPACENET
Domestic satellite network (Owned by GTE - USA)

SPADE
SCPC PCM multiple Access Demand assigned Equipment

SPAS
Shuttle Payload Satellite

SPC
Stored Program Control

SPD
Synchronous Phase UW Detection

SPDT
Single Pole Double Throw

SPE
Signal Processing Equipment

SPEC
South Pacific Economic Cooperative

SPELDA
Dual-launch system for heavy geostationary payloads, used by Ariane

SPF
Single Point Failure

SPI
Software Productivity Improvement

SPINE
Space Information Network Experiment (ESA)

SPL
Signal Processing Modem

SPM
Signal Processing Modem

SPN
Spin

SPOT
Earth Observation Satellite System (France)

SPR
Software Problem Report

SPS
Solar Powered Satellite

SPST
Single Pole/Single Throw

SPT
System Performance Test

Sputnik
Experimental satellite for manned space flights (Russian Federation)

SQL
Structured Query Language

SQRX
Square Axis Positioner

SR
Scanning Radiometer

SRA
Slip Ring Assembly

SRAEN
Reference system for the determination of articulation reference equivalents

SRARQ
Selective Repeat-Automatic Repeat Request

SRATS
Solar Radiation and Thermospheric Structure Satellite (Japan)

SRB
Secondary Reference Burst

SRC
Source

SRD
Step Recovery Diode

SRE
Sending Reference Equivalent

SRF
Service Request Flag

SRIP
Supplemental Retirement Income Plan

SRL
Stability Return Loss

SRM
Solid Rocket Motor

SRO
Synthesizer Reference Oscillator

SRP
Signal Reference Point

SRR
Shipment Readiness Review

SRS
Secondary Reference Station

SRT
Secondary Reference Terminal

SRTS
Supporting RTE and TSM System

SS
Satellite Switching

SS-TDMA OR SS/TDMA
Satellite-Switched Time Division Multiple Access

SS/L
Space Systems/Loral

SSB
Single Sideband (AM)

SSB-SC-AM
Single Sideband Suppressed Carrier Amplitude

SSB-SC-ASK
Single Sideband Suppressed Carrier Amplitude Shift Keyed

SSB-SC-PAM
Single Sideband Suppressed Carrier Pulse Amplitude Modulation

SSBTP
Satellite Switching Burst Time Plan

SSC
Satellite Situation Center

SSCTP
Satellite Switching Condensed Time Plan

SSD
Service Start Date

SSE
Space Segment Engineering

SSES
Space Segment Payload Engineers

SSFC
Sequential Single Frequency Code

SSI
Small-Scale Integration

SSLO
Solid State Local Oscillator

SSM
Satellite System Monitor

SSMA
Spread Spectrum Multiple Access

SSME
Space Shuttle Main Engine

SSMG
Satellite System Monitoring Group

SSMTP
Satellite Switching Master Time Plan

SSO
Simultaneous Sun Outage

SSOG
Satellite Systems Operations Guide (Intelsat)

SSOP
Satellite System Operations Plan

SSP
Sensor Suite Positioner Sub-Satellite Point

SSPA
Solid State Power Amplifier

SSPS
Satellite Solar Power Station

SSR
Steady State Reception

SSRA
Spread Spectrum Random Access

SSRTE
Satellite Switching Reference Terminal Equipment

SSSF
Self-Scanner Stop Failure

SST
Satellite-to-Satellite Tracking

SSTDMA
Satellite Switched Time Division Multiple Access

SSTM
Station to Station Traffic Matrix

SSTP
Switch State Time Plan

SSTV
Slow Scan Television

SSU
Secondary Sampling Unit

SSUS
Solid Spinning Upper Stage

SSV
Switch State Verification

ST
"End Pulsing" Command (CCITT format)

STA
Structural Test Article

STAR
Satellite Telecommunications with Automatic Routing (Simple form of SPADE system)

STAT
Status

STATSIONAR
Communications Satellite for Geostationary Orbit Operation (Russian Federation)

STBY
Standby

STC
Switching and Testing Center

STCC
Spacecraft Technical Control Center

STD
Subscriber Trunk Dialing

STDN
Space Tracking and Data Network

STE
Spacecraft Test Equipment

STELLA
Satellite Transmission Experiment Linking Laboratories (ESA)

STEP
Stepper

STETS
Solar Terrestrial Energy Transfer Studies

STIPS
Study of Traveling Interplanetary Phenomenon

STM
Structural Test/Thermal Model

STOM
Spade Terminal Operator's Manual

STOW
Stowed

STOX
Speech plus Duplex (speech and telegraphy in voice channel)

STP
Signal Transfer Point

STR
Strength

STRATS
Solar Radiation and Thermospheric Satellite (Japan)

Streaming
A method for delivering video or other content over a telecommunications network in a continuous flow

STRIP
Satellite Transmission Impairment Program

STRT
Start

STS
Space Transportation System (operated by NASA - USA)(the Shuttle)

STSK
Scandinavian Committee for Satellite Telecommunications

STX
Start of Text

SU
Signal Unit

SUB
Substitute Character

SUPARCOT
Space and Upper Atmosphere Research Commission (Pakistan)

SURVSATCOM
Survivable Communications Satellite

SVC
Secure Voice Communications Service / System

SVM
Space Vehicle Motor

SW
Short-Wave (radio)

SWE
Spherical Wave Expansion

SWF
Short Wave Fadeout

SWG
Standard Wire Gauge

SWI
Special World Interval

SWIFT
Society for Worldwide Interbank Financial Telecommunications

SWL
Short-Wave Listener

SWOF
Switchover Operation Failure

SWR
Standing Wave Ratio

SYMCOSAT
Consortium for Symphony Satellite

Symphonie
Experimental Satellite System (France/Germany)

SYN
Synthesizer

SYNCH
Synchronize/Synchronizer

SYNCOM
Early Geostationary Satellite (USA)

SYNCOM IV
Experimental Satellite Designed by Hughes Aircraft for STS Launch (prototype for operational satellites for 1980's - USA)

SYSGEN
System Generation

SYU
Synchronous Signal Unit