SAT – Stepped Atomic Time
TLI – trans-Lunar Injection
GMT – Greenwich Mean Time
DST – Daylight Saving Time
UTC – Coordinated Universal Time
EROS – Earth Resources Observation Satellite
CEOS – Committee on Earth Observation Satellite
ERA – Earth Rotation Angle
SEM – Space Environment Monitor
HET – Hall Effect Thruster
WAGE – Wide Area GPS Enhancement
AMSU – Advanced Microwave Sounding Unit
SXI – Solar X-ray Imager
UNITAR – United Nations Institute for Training and Research
UNOSAT – UNITAR Operational Satellite Applications Programme
RW – Reaction Wheel
HST – Hubble Space Telescope
GAST – Greenwich Apparent Sidereal Time
RTG – Radioisotope Thermoelectric Generator
TCS – Thermal Control System
MWR – Microwave Radiometer
GLM – Geostationary Lightning Mapper
RISAT – Radar Imaging Satellite
ASAT – Anti-Satellite Weapons
IADC – Inter-Agency Space Debris Coordination Committee
FOC – Full Operational Capability
SDO – Solar Dynamics Observatory
CMG – Control Moment Gyroscope
SLAR – Side Looking Airborne Radar
SAR – Synthetic Aperture Radar
IASI – Infrared Atmospheric Sounding Interferometer
MRO – Mars Reconnaissance Orbiter
LRO – Lunar Reconnaissance Orbiter
ICO – Intermediate Circular Orbit
SBSP – Space Based Solar Power
GESS – Global Earthquake Satellite System
HURSAT – Hurricane Satellite
MW – Microwave
RW – Radio wave
TEA – Torque Equilibrium Attitude
DWSS – Defense Weather Satellite System
DMSP – Defense Meteorological Satellite Program
SD – Solar Diffuser
OSPO – Office of Satellite and Product Operations
NESDIS – National Environmental Satellite Data and Information Service
GOES – Geostationary Operational Environmental satellite
EUMETSAT – European Organisation for the Exploitation for Meteorological Satellites
ASLV – Augmented Satellite Launch Vehicle
GSLV – Geosynchronous Satellite Launch Vehicle
PSLV – Polar Satellite Launch Vehicle
