S字彙

S (south)
S band
S parameter
S-ALOHA (Slot-ALOHA)
S-glass
S/D (Signal-to-Distortion ratio)
S/I (Signal to Interference ratio)
S/N (Signal-to-Nosie ratio)
S/W (Short Wave)
S/X (Short to cross-talk ratio)

sacnner
sacnner， Foster
safety margin
SALL (Signaling AAL)
sampley-by-sample product
sand-box test
sapce division multiplexing crosstalk
sapphire
SASE (Spectific Application Service Element)
SAT (satellite)
satar communication
satbility
SATCOM (satellite communications)
satillite， observation
SATNET
satruation， receiver preamplifier
saturation overflow
Savelength Division Multiplexing (WDM)
SB (Side Band)
SBC (Sub-Band Conding)
SBS (Satellite Business Systems)
SBSVCI (Selective Broadcast Signaling Virtual Channedl Identifer)
sbustitudion cipher
SCA (Subsidiary Communication Authorization)
scalability
scanned aperture
scanning， electromechanical
scannng， beam hopping or
scatterance
scatterer
scatter， forward
SCCP medthod Indicator
Schelkunoff's unit circle method
Schmidt lens
Schottdy-barrier diode
Schottky barrier
Schwarzschild reflector
Schwinger reversed-phase coupler
scintillation
scintiooation， phase
SCON (Signalig Configuration )
SCOPE(ocsilloscpoe)
scrambler
Screening Indicator
SD (Sequence Date)
SDH (Synchronous Digtal Hierarchy)
SDLC (Synchronous Data Link Control)
SDP (Signal Data Processor)
Sdparated Multiclad Layer (SML) stripe laser
SEASAT (Sea satellite)
SEC-DED (Single-Error-Correcting and Double-Error-Detecting) code
second generation system
secret communication
secure voice communications
selectively doped heterostructure transistor
selectivity
selectivity， adjacent-channel
SELFOC lenses
Sellmeier dispersion equation
semantics
semicative missle guudance
semicircular cavity
seqnecue， odd
sequencer
sequence，Gold
serive， digital termination
servcie，additional dissemination
servomtor
servo， A.C.
severe-errored-seconds
SFM (Space Frequency Modulation)
SGM (Segmentation Message)
sgmentation
shaping， nosie
sharp cutoff filter
shearing microscope
sheath helix
shielded balanced pari caboe
shielding effectiveness
shifter， phase
shock， thermal
shoke horn antenna
shor-haul communication
shorted line
shot noise
shpaed reflector
shut down
sidband， lower
sidelobes， antenna
sidelobe， minimum peak
SideLooking Array Radar{=SLAR}
sidelooking(SLAR)array antennas
sidereal day
sidewall slots
SIEMENS
siganl to noise ratio (SNR)
siganls， antipodal
signature， digital
signla， PM
silde-screw tuner
silding connection
silence zone
silicone
simulation
simulations， digital computer
simulator
Singleton bound
singular field
sink agency
sinusoidal sequences
SIR (Signal to Inteference Ratio)
siting
skeletal coding
skirt selectivity
SKYLAB (Sky Laboratory Satellite)
SKYNET (Sky Network satellite)
slant range for antennal measurement
slanted dipoles
SLAR
slave station
SLD-fiber coupling
SLED-fiber coupling
sleeve， alignmentof
slica glass flourine doping
SLM (Subscriber Loop Multiplex)
sloping vee
SMA connectors
smart sensor
smeiconductor ion-exchanged glass components
SMR
SN (Sequence Number)
SNA (Systems Network Architecture)
snake-in-the-box code
Snell's law
Snell's law of reflection
snell's law of refraction
SOC (SubCarrier Oscillator)
socket
software
soild acceptance angle
Sol-Gel process
sola longitude
solder
solenoidal field
solition communicaiton system
soliton， higher-order
solstice， summer and winter
Sommerfeld-Goubau wave
SONET
sonnector
SOS distress signal
SP (Single-Pole)
spacecraft
SPC (Stored Program Control)
SPDT (Single Pole Double Throw)
speaker
spearate channel signaling
Specialized Common Carrier (SCC)
specifications
speckle pattern
SPECS (specifications)
spectroscopy
spectrumprediction
spectru， electromagnetic
speed， hlind
speical purpose telephone
sphere-packing bound
SPID (Service Profile Identifer)
spinning satellite
spiral， equiagular
splice loss theory
splitter
splitter， polarization
spontanceous emission
spooling directory
spotter
spray antenna
spreading function
spring fingers
SPST (Single-Pole Single Throw)
spun fibers
spy satellite
squeezable waveguide
squirrel-cage antenna
srame synchronization
SREC (SSCOP Recover)
Srivastava code
SS/TDMA (Satellite Switched Time Division Mulitple Access)
SS7
SSBSC (Single Sideband Suppressed Carrier)
SSCF (Service Specific cordination Function)
SSCS (Service Specific Convergence Sublayer)
SSFM (Single Sideband frequency Modulation)
SSM (Spreaded Spectrum Modulation)
SSMA (Satellite Switch Multiple Access)
SSN
SSPA (Solid State Power Amplifier)
SSS (Synchronous Satellite System)
stability of a linear system
stabilization
stabilizer
Stablized Master Oscillator{=SMO}
standardization
startup cofficients
star， passive
stat toplogy， passvie
statics
stationarity
statistics area
statosphere
stay radiation
STBy (stand by)
steady state
Stefan-Boltzmann law
steradian
Stirling's formula
stopband
storage battery
stored program control system
Strategic Defense Initiative (SDI)
stratopause
stray current
streamlines
stripper
structural return loss
Study Group XVIII
stufing， character
stylus
subarea
subarray
subbands
subblock gain
subcarreir multiplexing
subclutter visibility
subcode
subharmonic mixer
sublease of satellite
submerged system
submillimeter wave
subminiature
Submission and Delivery Protocol (P3 protocol)
subnet
subsampling
subsatellite point
subsplit system
substandard
substitution method
substrate
subsystem
sudden ionospheric disturbance
sunrise effect
superdirective antenna
superdirectivity
superenciphement
superframe
supergain antenna
supergroup
superior mirage
superlattice
superluminescence
superluminescent LED
superposition principle
superpower station
superregenerative reception
superturnstile antenna
supervisory frame
supplement
supplementary trunk group
surround channel
survivor path
SUS (Suspend Message)
susceptance
susceptibility
susceptibility， magnetic
suspended
suspender
suspension
Sustainable Cell Rate
SVC (Signaling Virtual Channel)
SWAVE (sky wave)
sway
SWC (Short Wave Choke)
SWD (Standing Wave Detector)
swell
swichging system， baseband frequency
swing
swithcing， space-division
SX (Signal-to-corsstalk ratio)
sycnhornizer
Sylvester matrix
symbol， parity check
symmetric protocol
symmetrical antenna
symmetry
SYN (Synchronization)
synchornization word
synchroniaed transmission
synchronism
synchronized boardcasting network
SYNCHROS (synchronizer devices)
syncowrod
syndorme， cyclic code
syntax
synthesize
synthesizer
Synthetic Aperture Radar{=SAR}
synthetic(SAR)array antennas
syschronization， decoder
sysnthesis of line-source

saddle point
saddle-point method of integration

SAM (Subsequent Address Message)
SAM (Synchronous Amplitude Modulation)

sample
sample aspect ratio
sample space
sample-and-hold
sample-and-hold circuits
sample-by-sample sum
sample-interleaved

sampled aperture
sampled-data

sampling
sampling error
sampling frequency
sampling of 2-D signal
sampling of 3-D signal
sampling of bandpass signal
sampling of continous-time signal
sampling of moving image
sampling period
sampling rate
sampling theorem
sampling theorem， bandpass

sampling， ideal
sampling， integer-band
sampling， nonuniform
sampling， Nyquist
sampling， uniform

SAR
SAR (Segmentation and Reassembly Sublayer)

satellite antenna
satellite boardcasting
satellite channel
satellite communication
satellite communication ship
satellite coverage
satellite deployment pattern
satellite hop
Satellite Indicator
satellite line
satellite network
satellite orbit
satellite radiated power
satellite radio comunication
satellite reconnaissance
satellite relay station
satellite repeater
satellite station
satellite technology
satellite terrestrial links
satellite toll trunk
Satellite-Switched Time-Division Multiple Access (SS/TDMA)
satellite-to-fixed-station link
satellite-to-satellite communication
satellite-warning system

satellite， advanced synchronous meteorological
satellite， broadcasting
satellite， low-alititude
satellite， maneuvering
satellite， marine communication
satellite， meteorodi detection
satellite， meteorological
satellite， minimum orbital numanned
satellite， missle termainal guidance
satellite， moom-go-round
satellite， multistage
Satellite， Navy Ocean Surveillance
satellite， nuclear (blast0 detection
Satellite， Pacific
Satellite， Pacific Ocean
satellite， paddlewheel
satellite， passive communication
Satellite， Passive Geodetic
satellite， pencil-shaped
satellite， phase

sationary periodically
sationary stochastic processes， strict-sense

saturation， dirft velocity
saturation， source dive circuit

SAW (Surface Acostic Wave) device
SAW filter
saw-toothed waveform

SC (Single-Channel)
SC (Suppressed Carrier)
SC/c (Single Channel per carier)

scalar
scalar feed
scalar horn
scalar horn antenna
scalar magnetic potential
scalar multiplication
scalar potential
scalar triple product
scalar wave equation

scale model
scale model antenna measurement
scale model measurements

scanner， Lesis
scanner， organ-pipe

scanning antenna
scanning density
scanning line frequency
scanning loss factor
scanning radar
scanning radiometer

scatter
scatter angle
scatter loss
scatter propagation

scatterancele communication
scatterancele communication channel terminal
scatterancele communication transmitter

scattered field
scattered power
scattered signal

scattering
scattering angle
scattering area
scattering center
scattering coefficient
scattering function
scattering law
scattering layer
scattering matrix
scattering measurement
scattering propagation
scattering region
scattering volume
scattering wave communication

scattering， anomalous
scattering， anti-Stokes
scattering， extrinsic
scattering， intrinsic
scattering， linear
scattering， nonlinear
scattering， phonon

Schwarz reflection principle
Schwarz-Christoffel transformation

SCR
SCR (sustainable Cell Rate)

SE (Secondary Emission)
SE (South East)

sea backscatter
sea communications
sea cultter
sea spikes
sea state
sea target

search algorithm
search radar

secondary multimode mechanical splice alignment
secondary office
secondary passive alignment
secondary rotary splice alignment
secondary route
secondary silicon chip array splicing alignment
secondary station
secondary unit

sectoral horn (saveguide)
sectoral horn antenna

seeker
seeker antenna

seeker， Lock-On-Before-Launch (LOBL)
seeker， missile

segmental cavity
segmental SNR

Segmentation and Resassembly Sublayer
Segmentation Message

selective coupler
selective diversity combining
selective fading

self modulation
SELF OSC (self-oscillator)
self-centering
self-clocking code
self-dual code
self-information， average
self-phase modulation
self-reaction
self-synchronization
self-tuning adaptive filter

semi-automatic private branch exchange
semi-duplex operation

semiconductor
semiconductor absorption
semiconductor amplifier
Semiconductor APD
semiconductor injection laser
semiconductor integrated optics
semiconductor junction laser
semiconductor laser
semiconductor LED
semiconductor optical amplifier
semiconductor p-i-n photodiode
semiconductor p-n photo-diode
semiconductor photoransistor

semiconductor， absorption coeffecient of
semiconductor， alloys (III-V)
semiconductor， bandgap energies of
semiconductor， degenerative doping
semiconductor， dielectric tensor of
semiconductor， n type

send filter
send side
send-and-wait

Sending complete
sending set
sending terminal
sending-end crosstalk

sense amplifier
sense antennal

sensitivity
sensitivity analysis
sensitivity coefficient
Sensitivity Time Control{=STC}

sensitivity， accoustic
sensitivity， photodiode

sensor
sensor amplifier
sensor coating

sensor， optical fiber acceleration
sensor， optical fiber acoustic
sensor， optical fiber coated
sensor， optical fiber displacement
sensor， optical fiber encoder
sensor， optical fiber extrinsic
sensor， optical fiber gamma ray
sensor， optical fiber gas
sensor， optical fiber gyroscopic
sensor， optical fiber intensity-modulated
sensor， optical fiber interruption effect
sensor， optical fiber intertial
sensor， optical fiber intrinsic
sensor， optical fiber magnetic field
sensor， optical fiber polartimetric
sensor， optical fiber pressure
sensor， optical fiber proximity
sensor， optical fiber rotation
sensor， optical fiber scatter effect
sensor， optical fiber spectrosocpic effect
sensor， optical fiber strain
sensor， optical fiber temperature
sensor， optical fiber velocity
sensor， optical fiber vibration
sensor， optical fiber x-ray
sensor， optical fiver microbend

separable acf
separable code
separable linear aperture distribution
separable transforms

separation of variables
separation-of-variables method

sequence
Sequence Number

sequence， basis
sequence， causal
sequence， conjugate-antisymmetric
sequence， conjugate-symmetric
sequence， exponential
Sequence， Frame Check (FCS)
sequence， Ksasmi
sequence， left-handed
sequence， left-sided
sequence， periodic
sequence， right-sided
sequence， sinusolidal
sequence， two-sided

sequential coding
sequential decoding
sequential detection
sequential lobing

serial D/A conversion
serial number
serial tranmission
serial-to-parallel converter

series capacitor
series inductor
series tee
series-fed array

Service 1
Service 2
Service 3 Request
Service Access Point{=SAP}
service channel
Service Data Unit{=SDU}
Service Information Octet
service meter

service， advisory
service， aeronuatical radionavigation
service， broadcasting-satellite
service， confirmed
service， messae authentication handling
service， pack switching

SERVO (servo mechanism)
servo loop

session layer
Session Protocol Data Unit (SPDU)

SETUP (Set-Up Message)
SETUP ACK (Set-Up Acknowledge Message)

Severely Errored Cell Block (SECB)
Severely Errored Cell Bolck Ratio (SECBR)

SF (Short wave Frequency)
SF (Supersonic Frequency)

shadow
shadow area
shadow attenuation

Shannon channel capacity
Shannon limit
Shannon's theorem
Shannon-Hartley law

shaped beam synthesis of array
shaped reflectr， doubly curved
shaped-beam antenna

SHF (Super High Frequency) band
SHF radio link

shift
shift register
shift-invariant systems
shift-register code

shift， Goss-Haenchen
shift， phase

ship defense
ship to shore communication
ship-to-satellite communication
ship-to-ship link
ship-to-shore link

short block code
short burst
short circuits
short distance carrier telephoen
short haul
short wave
short wave antenna
short wave length
short wave receiver
short wave relay
short wave transmitter
short-circuit
short-distance carrier system
short-period fading
short-range fading
short-range radio transmitter
short-term stability
short-time Fourier transform
short-wave
short-wave band
short-wave beam antenna
short-wave communication
short-wave radiation
short-wave radio station
short-wave radio transmitter

shortened block code
shortened code
shortened cyclic block code
shortened cyclic code
shortened Hammng codes

shunt
shunt capacitor
shunt tee
shunt-fed dipole

SI units
Si-chip switch

side echo
side information
side information for error protection
side lobes

sideband
sideband suppressed carrier

sidelobe
sidelobe clutter
sidelobe clutter rejection
sidelobe interference
sidelobe interference canceling
sidelobe level
sidelobe noise
sidelobe reduction
sidelobe spectrum
sidelobe suppression
sidelobe weighting

siganling， nonreturn ot zero (NRZ)
siganling， out-of-band

sign bit
sign digit
sign indicator

signal
signal analysis
signal code， abbreviated
signal contellation
Signal Corps
signal delay time
signal distortion
signal distrotion rate
signal encrypt system
signal energy
signal flow graph
signal identification
signal impairment
signal intelligience
signal intelligience service
signal interpretation
signal interval
signal polarity
signal power
signal processing
signal processor
signal procissing， analog
signal reconnaissance
signal reconstruction
signal security
signal space
signal spectrum
signal spillter
signal stregth
Signal Terminal Equipment (STE)
signal to noise and distrotion ratio
signal waveform
signal ，sigital control
signal-line noise immunity
signal-to-channel noise ratio
signal-to-clutter ratio (SCR)
signal-to-crosstalk ratio
signal-to-distrotion ratio
signal-to-interference ratio
signal-to-masking ratio
signal-to-noise ratio (S/N， SNR)
signal-to-noise ratio (SNR)， output
Signal-to-Noise Ratio{=SNR}
signal-to-noise ratio， postdetection
signal-to-noise ratio， predetection
signal-to-quaztization noise ratio (SQR)
signal/crosstalk ratio

signaling
Signaling ATM Adaptation Layer
signaling channel
Signaling Link Selection
signaling network
signaling rate
Signaling Tone (ST)
Signaling virtual Channel
Signaling Virtual Channel Identifier A{=SVCIA}
Signaling Virtual Channel Identifier B{=SVCIB}
Signaling Virtual Channel Identifier{=SVCI}

signaling， doubinary
signaling， multi-frequenxy code
signaling， out-band

signals， bandpass
signals， biotrhogonal
signals， diagram
signals， modified duobinary partial response
signals， narrowband

signal， acknowledgement control
signal， activating
signal， address-complete
signal， address-incomplete
signal， AM
signal， amrking
signal， antipodal
signal， ASK
signal， asynchronous
signal， bandimited
signal， baseband PCM
signal， call progress
signal， called-party's-line-condition
signal， deta modulation
signal， doubinary partial response
signal， DPSK
signal， DSB
signal， FM
signal， FM stereo
signal， FSK
signal， image
signal， luminance
signal， MASK
signal， MFSK
signal， modified doubinary
signal， MPSK
signal， nosie
signal， outoging RQ'
signal， PAM
signal， PDM， PPM
signal， periodic
signal， permanent glow
signal， PSK
signal， radom
signal， spread sectrum
signal， SSB
signal， time multiplexed
signal， TV

signa， actuatin
signa， analog

significant figure
significant number

silica core rod
silica defect
silica fiber
silica glass fabrication
silica glass strength
silica glass vapor phase processing

silicon
silicon (Si) absorption
silicon (Si) detector
silicon (Si) FET
silicon (Si) photodiode
silicon carbide
silicon chip array splicing
silicon dioxide
silicon gets
silicon JFET
silicon MOSFET noise
silicon nitride

Simple Mail Transfer Protocol (SMTP)
simple matter
simple parity check code

simplex
simplex code
simplex communication
simplex signal
simplex transmission

simulcast
simulcast program

simultaneous broadcasting
simultaneous transmission

sine integral function
sine integrals
sine pulse
sine wave carrier
sine's law
sine-input
sine-wave input

single access
Single Channel Per Carrier (SCPC)
single fiber connector
single frequency code
Single Link Procedure (SLP)
single mode AlGaAs injection laser
single mode connector
single mode fiber connector
single mode fiber joint loss
Single Mode Fiber{=SMF}
single mode fiber， material dispersion parameter of
single mode fiber， polarization of
single mode fiber， propagation constant of
single mode fiber， spot aize of
single mode laser， nonsemiconductor
single mode laser， semi-conductor mode stabilization of
single mode laser， semi-conductor structure of
single mode optical fiber
single mode system
single parity check code
single side-band modulator
Single SideBand (SSB)
single sideband modulation
Single Step Call Transfer
Single Target Tracking{=STT}
single-axis gimbal
single-carrrier FM mode
Single-Channel Per Carrier (SCPC)
single-core cable
single-delay coherent canceler
single-ended mixer
single-error correcting code
single-frequency interference
single-hop link
single-lead cable
single-mode fiber
single-mode fiber's bandwidth
single-mode fiber's splicing attenuation
single-port amplifier
single-sideband suppressed
single-stub impedance matching
single-track error
single-wire line

SITA (Societe Intermationale de Telecommunications Aeronartiques)
SITA data network

site name
site selection
site survery

skew rays
skew rays acceptance angle

skin depth
skin effect
skin-effect resistance

sky noise
sky wave
sky-noise temperature

slab guide
slab waveguide shape birefringence

sleeve diple
sleeve monopole

sliding contact
sliding fading
sliding window protocol

slope detection
slope detector
slope overload

slot
slot antenna
slot array
slot equivalent impedance
slot I
slot impedance
slot incremental admittance
slot input conductance
slot line
slot radiation conductance
slot scattering matrix
slot time

slotted array antenna
slotted cone
slotted cylinder
slotted sphere
slotted waveguide antenna
slotted-waveguide array

slot， annular
slot， cavity-backed
slot， circular-wavegudie
slot， coax feed
slot， crossed
slot， dievlectric loaded
slot， edge
slot， half-wave
slot， inclined series
slot， longitudinal shunt
slot， mutual coupling of
slot， notch
slot， offset-feed
slot， probe-coupled
slot， short
slot， small rectangular
slot， stripline
slot， T-bar-fed
slot， wavegude-fed

slow drift
slow fading
slow wave
slow wave antenna
slow wave structure
slow-wave device

small antenna
small antenna， effective volume of
small antenna， flush
small antenna， radiation power factor of
small eateh termainal
small loop
small power radio station
small-signal behaviour
small-size network

Smith Chart
Smith impedance chart

smoke
smoke attenuation

snow
snow attenuation

soft decision
soft shell coating
soft-decision decoding
soft-zoen decision

solar activity
solar array
solar array drive
solar array shunt regulator
solar cell
solar cycle
solar day
solar declination
solar eclipse
solar flare
solar flare protons
solar flux
solar gravitational parameter
solar noise
solar perturbations
solar radation pressure
solar radiation
solar right ascension
solar sunspot
solar-cell array
solar-powered satellite

solid lubricant
solid propellant trocket
solid-state amplifiter
solid-state modulator
solid-state multiplexer
solid-state source

soliton attenuation
soliton condistions for existence
soliton equation
soliton pulse chirp
soliton wave equation

sonar
sonar communication

sound bandwidth
sound broadcasting
sound carrier
sound channel
sound pressure level
sound signal
sound-proof telephone cabinet
sound-vision separator

sounding
sounding satellite

source
source angency
source coding
source coordinate
source decoder
source ecoding， adaptive DPCM
source encoding
source encoding， adaptive DM
source encoding， adaptive PCM
source entropy
Source Parameter
source rate
source statistics
source with memory
source-free region

sources， coisne on-a-pedestal continuous
sources， continouus
sources， cosine continuous
sources， edge continuous
sources， Guassian continuous
sources， line-source continuous
sources， linear phase continuous
sources， radial taper continuous
sources， triangular continuous

source， Huygens
source， infared
source， multipole
source， unit

space and tone diversity
space attenuation
space center
space communication
space communication and tracking
space diversity
space division multiple access
space division multiplex
Space Division Multiplexing (SDM)
space division multiplexing crosspoint switch
space division multiplexing extinction ratio
space division multiplexing lithium niobate switches
space division multiplexing time-slot interchanger
space domain (or division)multiple access
space harmonic
space quadrature
space radar
space reconnaissance
space segment
space shuttle
space telemetry
space-born repeater station
space-borne radar
space-charge capacitance
SPACE-COM (space communication)
space-division digital switching
space-division switching
space-division switching connectivity
space-division switching crossbar architecture
space-division switching integrated-optic crossbar switch array
space-division switching reconfiguration speed
space-division swithcing crosstalk
space-earth communication
space-to-grund communication
space-to-space link

spaced receiver
spaced-frequency， spaced-time correlation funciton

space， dual
space， null
space， row

Spare
spare channel
spare circuit
spare code
spare part(s)
spare satellite

spatial coherence
spatial correlation
spatial hole burning
spatial resolution
spatial scalability
spatial uniformity of clutter
spatial wave

specch volume
specch waveform

Specific Application Service Element (SASE)
specific heat

spectral analyisis
spectral density
spectral efficiency
spectral line width
spectral lines
spectral raised cosine pulse
spectral resolution
spectral response
spectral sampling
spectral selection
spectral width
spectral window

spectrum
spectrum analysis
spectrum analyzer
spectrum estimation
spectrum reuse isolation
spectrum reuse technique
spectrum space

spectrum， amplitude
spectrum， complex
spectrum， energy
spectrum， infared
spectrum， injection laser (outpur)
spectrum， millmeter wave
spectrum， raised sine
spectrum， two-sided

specular reflection
specular scattering

speech
speech acf
speech analysis
speech bandwidth
speech coding， communi-cations-quality
speech coding， subjective quality in
speech encoding
speech enhancement
speech freuency
speech interpolation
speech predictive encoding communications
speech scrambler
speech signal
speech spectra
speech stretcher
speech synthesis
Speech-Predictive EnCoding (SPEC)

speed
speed gate
speed of light
speed of response
speed-fax

spherical
spherical aberration
spherical calibration reflector
spherical cavity
spherical coordinate
spherical ended optical fiber
spherical reflector， corrector subreflector of
spherical reflector， line source feed of
spherical wave

spike clutter
spike leakage

spillover
spillover loss
spillover of message
spillover power

spin infrared sensor
spin stabilization
spin-stabilized satellite

spiral antenna
spiral nomogram
spiral slot antenna
spiral-four cable

splice， capillary
splice， elastomeric
splice， enhanced rotray mechanical
splice， fusion
splice， mechanical
splice， microgroove
splice， multimode mechanical
splice， ribbon cable
splice， V-groove

splicing adhesives
splicing attenuation
splicing hardware

splicing， core eccentricity of
splicing， coupling coefficients of
splicing， elastic
splicing， electromagnetic theory of
splicing， Gaussian beam model of
splicing， intrinsic quality facotr of
splicing， modal noise of
splicing， modal power distribution of
splicing， passive direct ribbon
splicing， sillicon chip array

split carrier system
split coax balun
split-gate range tracker

spontaneous emission
spontaneous lifetime
spontaneous optical emission

sporadic E layer
sporadic F1 layer
sporadic reflection

spot
SPOT (Satellite Positionting and Tracking)
SPOT (Satellite Probatoire d'Observation de la Terre)
spot beam
spot beam antenna
spot broadcasting
spot receiver
spot reflector

spread factor
spread fading channel
spread spectrum
spread spectrum code
Spread Spectrum Multiple Access (SSMA)
spread spectrum， Frequency-Hopped (FH)
spread spectrum， hybrid combinations
spread spectrum， time-hopped (TH)
spread-spectrum technique

spurious emission
spurious frequency
spurious mode
spurious noise
spurious oscillation
spurious radiation
spurious response
spurious signal

square law rectifier
square loop
square wave
square-law bit synchronizer
square-law detectro
square-law modulatro
square-law receiver

SR (Shift Register)
SR (SSCOP Release)
SR-ARQ (Selective Repetition-Automatic ReQuest)

SSB (Single Side Band)
SSB communication
SSB modulator
SSB up-converter
SSB-pm (SSB Pulse Modulation)
SSB-SC-AM (Single Side Band-Suppressed Carrier-Amplitude Modulation)
SSB-SC-ASK (Single Side Band-Suppressed Carrier-Amplitude Shigt Keying)
SSB-SC-PAM (Single Side Band-Suppressed Carrier-Pulse Amplitude Modulation)

SSCOP (Service Specific Connection Oriented Protocol)
SSCOP User-to-User Information"

stabilization， feedback
stabilization， frequency

stabilized frequency
stabilized satellite

STAble Local Oscillator{=STALO}
stable system

stack
stack algorithm
stack counter

staggered PRF
staggered pulse train
staggered scanning

Standard 'B' Earth Station
standard 'C' Earth Station
standard array
standard atmosphere
standard deviation
standard frequency and time signal
standard mismatch
standard mismatches
standard temperature
standard time signal satellite

standards
standards organization

standards， de facto
standards， de jure
standards， injustry

Standard， Draft International (DIS)
standard， internetwork protocol (IP)

standby
standby channel
standby radio canggel

standing wave
standing wave current
standing wave ratio indicator
Standing Wave Ratio{=SWR}
standing-wave antenna
standing-wave pattern

STAR (Satellite Telecommunication with Automatic Routing)
star coupler
star directional coupler
star network
star toplogy， active
star topolgy
star-ring architecture

start code
start window

State Transition Table
state-transition diagram (table)

static
static distrurbance
static fatigue
static fatigue limit
static fatigue， time to failure
static load
static mode

station
station class code
station diagogue
station keeping
station license
station number
station visual zone
station-to-station call

stationary
stationary formula
stationary point
stationary random processes
stationary random signal， Fourier analysis of
stationary sattllite
stationary stochastic processes， wide-sense
stationary target identification (STI)

station， aeronautical boradcast
station， aeronautical comunication
station， aeronautical radionabigation mobile
station， aeronautical unility land
station， aeronautical unility mobile
station， aeroplane
station， broadcast transmmitting
station， destination tributary
station， microwave
station， mobile
station， moblie earth
station， passive relay
station， peer

statistical average
statistical bin
Statistical Bit Rate {=SBR}
statistical clutter model
statistical conditioning
statistical framing
statistical independence
statistical model
statistical multiplexer
statistical multiplexing
statistical time-division multiplexing

STD
STD input buffer

steel rope
steel wire

steepest-descent (gradient) algorithm
steepest-descent (integration) contour
steepest-descent method of integration

steering
steering command

stell， carbon
stell， stainless

step index fiber， intermodal dispersion of
step index fiber， mode cutoff of
step index fiber， mode volume of
step index fiber， modes of
step index fiber， propagation constant of
step index fiber， rms impulse response of
step index fiber， single mode
step index optical fiber
step load
step-by-step automatic telephone system
step-by-step dialling
step-by-step switching cneter
step-index fiber， birefringent of
step-index fiber， coupling efficiency of
step-index fiber， coupling gain of
step-index fiber， dispersion limit of
step-index fiber， microbending loss of
step-index fiber， wavegudie dispersion of
step-size multipliers in AQB

stepped frequency saveforms
stepped horn antenna
stepped wavegudie

stereo FM
stereo mode
stereo position
stereo processing
stereo sound AM broadcast
stereo sound television{=MTS}
stereo-irrelevant

stereophonic image
stereophonic receiver

still picture
still-picture transmission

stimulated emission
stimulated optical emission

stochastic processes
stochastic signal

Stokes scattering
Stokes vector
Stokes' theorem

stop band
stop bit
stop code
stop window
stop-and-wait
stop-and-wait protocol

store-and-forward
store-and-forward lockup

strain proof
strain relief

strain， bending
strain， breaking
strain， critical
strain， fiber
strain， thermal

strand
strand cable

stranded cable fiber
stranded wire

stream cipher
stream encryption
stream of bits

strength member
strength variability

strength， breaking
strength， fiber

stress
stress birefringence
stress failure
stress fatigue
stress intensification
stress proof
stress tensor
stress ，electrical
stress-optical coefficient

stress， corrosion
stress， cracking
stress， tensile
stress， thermal

stretch processing
stretch radar

strip
strip antenna
strip guide
strip line
strip mapping

stripline
stripline bends

stripline， series slots
stripline， suspended

studio
studio room

stuffing
stuffing bits
stuffing bytes

SUB (subscriber)
Sub-addressing
sub-band
sub-band coding
sub-standard earth station

subband
subband filterbank
subband samples

subcarrier
subcarrier frequency
subcarrier interference
subcarrier modulation
subcarrier rejection

Subfield
subfield subcode

subjective effect in image coding
subjective effect in speech coding
subjective SNR
subjective testing

submarine cable
submarine cable carrier communication system
submarine cable repeater
submarine lightwave system
submarine telephone cable

subscriber
subscriber carrier telephone system
subscriber line circuit
subscriber loop
subscriber terminal equipment
subscriber TV
subscriber's number
subscriber-vision

subscription
subscription television

Subsequent Address Message
Subsequent Number

subsidiary cable
subsidiary communication

subterrancean cable
subterrancean line

suburban telephone line
suburban traffic

successive approximation
successive approximation A/D

sun-set effect
sun-synchronous oribt

sunspot activity
sunspot activity period
sunspot cycle
sunspot number
sunspot(s)

Super High Frequency{=SHF}
super-audio frequency
super-refraction
super-self aligned transistor

superheterodyne
superheterodyne receiver
superheterodyne reception

suppressed carrier
suppressed carrier modulation

suppressor
suppressor loss

surface absorption
surface absorptivity
Surface Acoustic Wave (SAW)
Surface Acoustic Wave (SAW) delay line
Surface Acoustic Wave (SAW) device
surface acoustic wave filter
surface charge
surface current
surface emitter
surface emitter， coupling with lenses
surface emitter， dual-wavelength
surface emitter， geometry and emission patterms of
surface emitter， long-wavelength
surface emitter， mesa-structure
surface emitter， microcavity
surface gudied waves
surface impedance
surface miail
surface of constant phase
surface resisivity
surface resistance
surface resistance of gold film
surface resistance of silver film
surface roughness
surface scattering
surface tension
surface traveling wave
surface wave line
surface wave radiation
surface waves
surface-emitting LED
surface-wave antenna

surveillance
surveillance radar
surveillance radar station
surveillance-warning satellite

suspend
Suspend message
Suspend/Resume Indicators

SW (South-West)
SW (switch)

Swerling model
Swerling target model

switch
switch off
switch on
switch ports

switchboard
switchboard cord
switchboard jack
switchboard operator

switched bit allocation
switched prediction
switched quantization
switched telephone traffic

switching
switching center
switching circuit
switching facility
switching interval
switching system
switching tubes

switching， packet
switching， photonic
switching， time-division

switch， A.T.R
switch， aggregate speed
switch， delay feedback control
switch， directional coupler
switch， mechanically activated
switch， multilex
switch， packet

syllable articulation
syllable chart
syllable compandor

symbol
symbol error
symbol error rate
symbol synchronization

symbolic code
symbolic coding

SYNC (synchronizer)
sync code

synchornization， carrier frequency
synchornization， master-salve

synchronization
synchronization character
synchronization signal

synchronization， frame
synchronization， manual

synchronizing code
synchronizing pulses

synchronous
synchronous communication
synchronous communication satellite
synchronous data
Synchronous Data Link Contol (SDLC)
synchronous data transmission
synchronous detection
synchronous detector
Synchronous Digital Hierarchy (SDH)
synchronous DS-CDMA
synchronous equatorial orbit
synchronous meteorological satellite
synchronous optical network
synchronous orbit
synchronous receiver
synchronous satellite
synchronous satellite orbit
synchronous terminal
Synchronous Time Division Multiplexer{=STDM}
Synchronous Transfer Mode(STM)
synchronous transfer orbit
synchronous transmission

SYNCOM (synchronous communication)
syncom satellite

syndrome
syndrome decoder
syndrome decoding

synthesis
synthesis filterbank
synthesis of linear array
synthesis subband filter

synthesis， beam shaping
synthesis， Fourier transform
synthesis， invisible region of
synthesis， root-matching of
synthesis， Schelkunoff polynomial
synthesis， space factor of
synthesis， visible region of

system
system bandwidth
system clock reference
system command
system gain
system header
system idenfification
system instabilities
system loss
system management
system noise
system noise temperature
system outage
System Parameter
system planning
system quality factor
System Services Control Point (SSCP)
system specifications
system target decoder
system traget decoder input buffer

systematic block code
systematic code
systematic convolutional code
systematic cyclic code

system， cellular telephone
system， linear time-invarigant
system， link budget
system， mcirowave amplifier repeater
system， microwave telecommunication
system， mimimun-phase
system， minimum phase-lag
system， mobile telephoe
system， spread spectrum
system， transfer function

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