GLOSSARY

2-PMM
binary pulse position modulation
ADPCM
adaptive differential pulse code modulation
ADR/TDMA
AMSC
American Mobile Satellite Corporation
AOTS
Advanced Orbital Test Satellite
APC
antenna pointing controller
APD
Avalanche-Photo-Detector
APM
antenna positioning module
ARCHIMEDES
Advanced Research in Communications using Highly Inclined and Demonstrations using European Satellite orbits for Mobile applications and other Experiments
ARTEMIS
Advanced Relay and Technology Mission
ASIC
application specific integrated circuit
ASTP
Advanced Systems and Technology Program
ASU
acquisition and synchronization Unit
ATM
asynchronous transfer mode
ATR-O
ATR Optical and Radio Communications Laboratories
B-ISDN
broadband-ISDN
BER
bit error rate
BFN
beam forming network
BPSK
binary phase shift keying
BSS-S
broadcast satellite service-sound
CAD
computer aided design
CCD
charge-coupled device
CCDS
Center for Commercial Development of Space
CDMA
Code Division Multiple Access
CEPT
European Conference of Posts and Telecommunications
CMOS-SOS
complementary metal oxide semiconductor-silicon on sapphire
CNES
Centre National D'Etudes Spatiale
COFDM
coded octal frequency division multiplex
COM
communications
COMETS
Communications and Broadcasting Engineering Test Satellite
CPW
co-planar waveguide
CRL
Communication Research Laboratory
CTS
Communications Technology Satellite
DAB
digital audio broadcasting
DBS
direct broadcast satellite
DLR
German Aerospace Research Establishment
DRPP
Data Relay Preparatory Program
DRS
Data Relay Satellite
DRSS
data relay satellite service
DRTM
Data Relay and Technical Mission
DSP
digital signal processing
DTL
Deutsche Telecom Laboratories
DYANET-II
DYnamic channel Assigning and routing satellite-aideddigital NETwork
EBU
European Broadcasting Union
EC
European Community
ECM
electronic counter measures
EFLA
European feeder link antenna
EHF
extremely high frequency
EIRP
Effective Isotropic Radiated Power
ELDO
European Launcher Development Organization
EMS
European Mobile System
EMSS
Experimental Mobile Satellite System
ENRI
Electronic Navigation Research Institute
EPC
electronic power conditioners
ERS-1
European Remote Sensing Satellite
ESA
European Space Agency
ESRO
European Space Research Organization
ESTEC
European Space Research and Technology Center
ETS
Engineering Test Satellite
ETSI
European Technical Standards Institute
FAFR
focal array fed reflector
FCC
Federal Communications Commission
FDDI
Fiber Distributed Data Interface
FDMA
Frequency Division Multiple Access
FEC
forward error correction
FES
fixed earth station
FET
field effect transistor
FFT
Fast Fourier Transform
fl
feeder link
FLASH TV
Flexible Advanced Satellite System for High Quality TV
FM
frequency modulation
FMC
fixed and mobile communications experiment
FIFO
first in first out
FSS
fixed satellite service
GEO
geosynchronous earth orbit
GNSS
Global Navigation Satellite System
GPF
Geo-Stationary Platform
GPSS
Global Positioning Satellite System
GSOC
German Space Operations Center
GTO
geosynchronous transfer orbit
HD-MAC
high definition-multiplexed analog components
HDR
high-data-rate
HDTV
high definition television
HEMT
high electron mobility transistor
HEMT-LNA
high electron mobility transistor low noise amplifier
HEO
highly elliptical orbit
HPA
high power amplifier
IBS
International Business Service
IC
integrated circuit
IDR
Intermediate Data Rate
IF
intermediate frequency
IFP
intermediate frequency processor
IMD
intermodulation distortion
IMS
Innovative Modular Satellite
IOI
In-Orbit Infrastructure
IOL
inter-orbit link
IOLA
inter orbit link antenna
ISDB
Integrated Services Digital Broadcasting
ISDN
integrated service digital network
ISL
inter-satellite link
ITU
International Telecommunications Union
JEM
Japanese Experimental Module
JPL
Jet Propulsion Laboratory
KARC
Kansai Advanced Research Center
KDD
Kokusai Denshin Denwa Company, Ltd.
KDDL
KDD R&D Laboratories
KSA
K-band single access
KSRC
Kashima Space Research Center
LAN
local area network
LCE
laser Communication Experiment
LEO
low earth orbit
LHCP
left-hand circular polarization
LLM
L-Band land mobile
LMSS
land mobile satellite services
LNA/DC
low noise amplifier/down converter
LNA
low-noise amplifier
LO
local oscillator
LUFET
line unified FET
M-CRL
MELCO Central Research Laboratory
MAN
metropolitan area network
MARECS-A
Maritime European Community Satellite-A
MCS
master control station
MELCO
Mitsubishi Electric Corporation
MESFET
Metal Semiconductor FET
MET
Matra Ericsson Telecomm
MF-TDMA
Multi-Frequency TDMA
MHS
microwave humidity sounder
MIC
microwave integrated circuit
MITI
Ministry of International Trade and Industry (Japan)
mm Wave
millimeter wave
MMIC
monolithic microwave integrated circuit
MMS
Matra-Marconi Space
MMSS
Maritime Mobile Satellite Services
MOBS
modular on-board switching system
MOMS
modular optoelectronic multispectral scanner
MOS-FET
metal oxide semicondutor-field effect transistor
MPA
matrix power amplifier
MPT
Ministry of Posts and Telecommunications (Japan)
MSBN
Mobile Satellite Business Network
MSM
microwave switch matrix
MSS
mobile satellite services
MW & HUV
microwave and high voltage devices
NASDA
National Space Development Agency (Japan)
NDI
non-developmental items
NEC
Nippon Electric Corporation
NF
noise figure
NTT
Nippon Telephone and Telegraph
OBP
on-board processing
OCE
O-band communications experiment
OMT
orthomode transducers
OMUX
output multiplexer
OQPSK
offset QPSK
PCS
personal communications services
PHP
Personal Handy Phone
PIM
passive intermodulation
POEM
polar orbit earth monitor
PP
propagation package
PPF
Polar Platform
PSDE
Programme for Space Demonstration and Experimental payloads
PSTN
Public switched Telephone Network
PTT
Posts, Telephone and Telegraph
QPPM
quadrature pulse position modulation
QPSK
quadrature phase shift keying
RACE
Research in Advanced Communications Experiment
RDSS
radio determination satellite services
RF
radio frequency
RHCP
right-hand circular polarization
RITA
RF Ion thruster assembly
RMSM
reconfigurable microwave switching matrix
RSM
RF switch matrix
SAC
Space Activities Commision
SAR
synthetic aperture radar
SAW
surface acoustic wave
SCAR
Satellite Communications Advanced Research
SCL
Space Communications Laboratory
SCPC
single channel per carrier
SCR
Space Communications Research
SCT
superconductivity core technologies
SDIO
Strategic Defense Initiative Office
SEED
self-electro-optic-effect devices
SEU
single event upset
SFLA
steerable feeder link antenna
SFU
Space Flyer Unit
SIC
S-band intersatellite communications
SILEX
Semiconductor Intersatellite Link Experiment
SIR-C
spaceborne imaging radar-C
SKDR
S-band/Ka-band data relay
SMDS
switched multimegabit data services
SNG
satellite news gathering
SOS
silicon on sapphire
SS
specialized service or spread spectrum
SS-CDMA
Spread Spectrum-Code Division Multiple Access
SS-FDMA
Spread Spectrum-Frequency Division Multiple Access
SS-TDMA
Spread Spectrum-Time Division Multiple Access
SSB
single side band
SSBTP
Sequence Scheduling Burst Transmission Planning
SSPA
solid state power amplifiers
STS
Space Transportation System
T/TST
time/time-space-time
TAO
Telecommunication Advancement Organization
TCP
transmission control protocol
TDD
time division duplex
TDM
time division multiplex
TDMA
time division multiple access
TDRSS
tracking and data relay satellite system
TEMISAT
TElespazio MIcro SATellite
TLTP
Telecom Long Term Plan
TMI
Telesat Mobile Incorporated
TRMM
Tropical Rainfall Measurement Mission
TT&C
tracking, telemetry, and command
TVB
television broadcast
TVRO
TV receive only
TWT
travelling wave tube
TWTA
travelling wave tube amplifier
UET
user earth terminal
UNOM
users, network operators, and manufacturers
UPC
uplink power control
USAT
ultra small aperture terminals
UST
user space terminals
VLBI
very long baseline interferometry
VLSI
very large scale integration
VPD
variable power divider
VPS
variable phase shifter
VSAT
very small aperture terminal
WAN
wide area network
WARC
World Administrative Radio Conference
WD/TD
wavelength-division/time-division
WEDOS
World Environment and Disaster Observation System

Published: July 1993; WTEC Hyper- Librarian