Communication and Navigation Satellite System
Earth Observation System
Space Applications
Space Transportation System
Space Sciences and Planetary Research
Sponsored Research
Indian Space Industry
Space Commerce
Systems Reliability and Safety
Human Resources
International Cooperation
‘Space’ In Parliament
Space Programme Publicity
Right To Information
Performance Evaluation of Department of Space Based on Result Framework Document
Audit Observations
Citizens’ Charter
The Centres of
Indian Space Programme
Organisation Chart
Budget at a Glance
Indigenous CUS of GSLV-D5

AAI : Airports Authority of India
AAR : Accumulation Area Ratio
ABPP : Air Breathing Propulsion Project 
ACL : Antrix Corporation Limited 
ADCOS : Advisory Committee for Space Sciences 
AFTN : Aeronautical Fixed Telecommunication Network 
AIBP : Accelerated Irrigation Benefit Programme
AIR : All India Radio
AIT : Assembly, Integration and Testing
AMS : Agro Met Stations
AMV : Atmospheric Motion Vectors 
AO : Announcement of Opportunity 
AOD  : Aerosol Optical Depth
APEP : Ammonium Perchlorate Experimental Plant 
APIO : Assistant Public Information Officer 
APPLE : Ariane Passenger Payload Experiment
APRSAF : Asia Pacific Regional Space Agency Forum 
ARG  : Automatic Rain Gauge
AS & DM  : Aerial Services & Digital Mapping
ASCC : Alternate Spacecraft Control Centres 
ASDM : Aerial Services & Digital Mapping 
ASPEX  : Aditya Solar Wind Particle Experiment
ATV :  Advanced Technology Vehicle
AWiFS  : Advanced Wide Field Sensor
AWS : Automatic Weather Station 
BMT : Barium Magnesium Tantalite 
Caltech : California Institute of Technology 
CAMC : Comprehensive Annual Maintenance Contract 
CARE : Crew Module Atmospheric Re-entry Experiment
CBL : Convective Boundary Layer 
CCD : Charge Coupled Device
CDMA : Code Division Multiple Access
CDR : Comprehensive Design Review/Critical Design Review 
CEOS : Committee on Earth Observation Satellites 
CFD : Computational Fluid Dynamics
CGMS : Coordinating Group on Meteorological Satellites 
CM : Crew Module
CME : Continuing Medical Education 
CMEs : Coronal Mass Ejections 
CMG : Construction & Maintenance Group 
CNES : Centre National d’Etudes Spatiales
CORS : Continuous Operating Reference Station 
COSPAR : Committee on Space Research 
CPIO : Central Public Information Officer 
CRM : Customer Relationship Management
CRS : Coarse Resolution ScanSAR
CSA : Canadian Space Agency 
CSSTE-AP : Centre for Space Science and Technology Education in Asia and the Pacific 
CUS : Cryogenic Upper Stage 
CVCM : Collected Volatile Condensable Material 
CWC  : Central Water Commission
CWDS : Cyclone Warning Dissemination System
CZTI : Cadmium Zinc-Telluride Imager 
DCS : Data Communication System
DCWDS : Digital Cyclone Warning Dissemination System 
DD  : DoorDarshan
DDWS : Digital Disaster Warning System 
DECU : Development and Educational Communication Unit 
DEM : Digital Elevation Model 
DES : Delhi Earth Station 
DMDD : Digital Meteorological Data Dissemination 
DMS : Disaster Management Support/System 
DMS-DSC : DMS- Decision support Centre 
DORIS : Doppler Orbitography and Radio-positioning Integrated
DOS : Department of Space 
DRS : Data Reception System
DRT : Data Relay Transponder 
DSC : Decision Support Centre
DSD : Drop Size Distribution
DSM : Digital Surface Model 
DSNG : Digital Satellite News Gathering 
DSP : Digital Signal Processing
DSRQ : Directorate of Systems Reliability and Quality 
DSS : Decision Support System
DTH : Direct-To- Home
ECLSS  : Environmental Control and Life Support System
ECMWF : European Centre for Medium Range Weather Forecasts 
EIRP : Effective Isotropic Radiated Power 
EMI/EMC : Electromagnetic Interference/Compatibility 
EPO : Earth Parking Orbit 
ESA : European Space Agency 
ESC  : Environment Simulation Chamber
ET : Evapo Transpiration
EUMETSAT : European Organisation for Exploitation of Meteorological Satellites 
E-VELC : Enhanced Visible Emission Line Coronagraph 
FADS  : Flush Air Data System
FASAL : Forecasting Agricultural output using Space, Agrometeorology
& Land based observations
FLEWS : Flood Early Warning System 
FMs : Flight Models 
FNC : Flex Nozzle Control
FOP : Final Operational Phase 
FRS : Fine Resolution Stripmap 
FSI  : Forest Survey of India
GAC : Global Area Coverage
GAGAN : GPS Aided GEO Augmented Navigation 
GCP  : Ground Control Point
GEO : Geostationary Earth Orbit
GEO LUT : GEOSAR Local User Terminal 
GEOSS : Group on Earth Observations System of Systems 
GIS  : Geographical Information System
GJs : Geomagnetic Jerks 
GPS : Global Positioning System 
GPS-ROS  : GPS Radio Occultation System
GSLV : Geosynchronous Satellite Launch Vehicle 
GTO  : Geosynchronous Transfer Orbit
HBCSE : Homi Bhabha Centre for Science Education 
HDTV : High Definition Television 
HEL1OS  : High Energy L1 Orbiting X-ray Spectrometer  
HF : High Frequency 
HgCdTe  : Mercury-Cadmium-Telluride 
HIPIC  : Hot Isostatic Pitch Impregnation and Carbonisation
IAA : International Academy of Astronautics 
IADC : Inter Agency Debris Coordination Committee 
IAF : International Astronautical Federation 
IAOP : Indian Astronomy Olympiad Programme 
IBSA : India-Brazil-South Africa 
ICARB : Integrated Campaigns for Aerosols, gases and Radiation Budget
ICC : INSAT Coordination Committee 
ICG : International Committee for Global Navigation Satellite Systems 
ICMF : Integrated Cryo Engines Manufacturing Facility 
ICT : Information and Communication Technology
IDSN : Indian Deep Space Network 
IGBP  : ISRO Geosphere Biosphere Programme
IGIS : Indigenous GIS 
IGOS : International Global Observing Strategy 
IIRS : Indian Institute of Remote Sensing 
IISc : Indian Institute of Science 
IIST : Indian Institute of Space Science and Technology 
IISU : ISRO Inertial Systems Unit 
IITs : Indian Institute of Technology 
ILRS : International Laser Ranging Service 
IMD : India Meteorological Department
IMGEOS : Integrated Multi mission Ground segment for Earth Observation Satellites
IMS -1 : Indian Mini Satellite-1 
INC : ISRO Navigation Centre 
INCOSPAR : Indian National Committee for Space Research 
INFFRAS : Indian Forest Fire Response and Assessment System 
INMCC : Indian Mission Control Centre 
INRES : Indian Navigation Reference Earth Station 
IOT : In Orbit Tests 
IPCM : Integrated Production of Components and Modules 
IPCS : Integrated Production of Control System Component and Modules 
IPRC  : ISRO Propulsion Complex
IRDCN : IRNSS Data Communication Network 
IRIMS : IRNSS Range and Integrity Monitoring Stations 
IRLRS : IRNSS Laser Ranging Service 
IRNSS : Indian Regional Navigational Satellite System 
IRNWT : Installation of IRNSS Network Timing 
IRS : Indian Remote Sensing Satellite
IRSCF : IRNSS Spacecraft Control Facility 
ISAC : ISRO Satellite Centre 
ISEA : Indian Scientific Expedition to Antarctica 
ISECG : International Space Exploration Coordination Group 
ISITE : ISRO Satellite Integration and Test Establishment 
ISM : Interstellar Medium 
ISPRS : International Society for Photogrammetry and Remote Sensing 
ISRO : Indian Space Research Organisation 
ISRO-SSPS : ISRO’s Space Science Promotion Scheme
ISSDC : Indian Space Science Data Centre 
IST : Integrated Spacecraft Testing 
ISTRAC : ISRO Telemetry, Tracking and Command Network 
JPL : Jet Propulsion Laboratory 
JWG-CSC : Joint Working Group on Civil Space Cooperation 
KSAT  : Kongsberg Satellite
LAP : Lyman Alpha Photometer 
LAXPC : Large Area Xenon Proportional Counter 
LEO  : Low Earth Orbit
LEOP : Launch and Early Orbit Phase 
LEOS : Laboratory for Electro-Optic Systems 
LEOSAR : Low Earth Orbit Search And Rescue
LFDC : Large Format Digital Camera 
LISS  : Linear Imaging Self Scanner
LiVHySI : Limb Viewing Hyper Spectral Imager
LM : Laboratory Model 
LMS : Learning Management System 
LOI : Lunar Orbit Insertion 
LPSC : Liquid Propulsion Systems Centre 
LSM : Large Scale Mapping 
LUT : Local User Terminal 
M3 : Moon Mineralogy Mapper 
MADRAS  : Microwave Analysis and  Detection of Rain and Atmospheric Structures
MBE : Molecular Beam Epitaxy
MCC : Mars Colour Camera 
MCF : Master Control Facility 
MENCA : Mars Exospheric Neutral Composition Analyser 
MMIC : Monolithic Microwave Integrated Circuit 
MNCFC : Mahalanobis National Crop Forecast Centre 
MOSDAC   : Meteorological and Oceanographic Satellite Data Archival Centre
MOTR : Multi Object Tracking Radar 
MOX : Mission Operations Complex 
MRCC : Maritime Rescue Coordination Centres 
MRS  : Medium Resolution SCANSAR
MSM : Methane Sensor for Mars 
MSS  : Mobile Satellite Service
NADAMS : National Agricultural Drought Assessment and Management System 
NARL : National Atmospheric Research Laboratory 
NASA  : National Aeronautics and Space Administration
NCAOR : National Centre for Antarctica and Ocean Research 
NDEM : National Database for Emergency Management 
NDVI  : Normalised Difference Vegetation Index
NE : North-Eastern 
NEC : North Eastern Council 
NEOC : National Emergency Operations Centre 
NER : North Eastern Region 
NE-SAC : North Eastern-Space Applications Centre 
NIAS : National Institute of Advanced Studies 
NNRMS : National Natural Resources Management System
NOEDA  : NRSC Open Earth Observation Data Archive
NPL : National Physical Laboratory 
NRDB  : Natural Resources Database
NRSA : National Remote Sensing Agency 
NRSC : National Remote Sensing Centre 
NSSS : National Space Science Symposium 
NUIS : National Urban Information System 
OCM  : Ocean Colour Monitor
OCXO : Controlled Crystal Oscillators 
OIS : Optical Imaging System 
OLIC : Official Language Implementation Committee 
OMT : Ortho Mode Transducer 
OP : Oceanus Procellarum
OSCAT  : Oceansat-2 Scatterometer
PAM : Payload Assist Module 
PAPA : Plasma Analyser Package for Aditya
PCB : Printed Circuit Board 
PC-NNRMS : Planning Committee on National Natural Resources Management System 
PDR : Preliminary Design Review 
PI : Principal Investigators 
PII : Photosynthesis Irradiance Incubator 
PLANEX : Planetary Science and Exploration 
POLIX : X-ray Polarimeter Experiment 
PRL : Physical Research Laboratory 
PSLV : Polar Satellite Launch Vehicle 
PSO : Particle Swarm Optimisation 
RaBIT : Radio Beacon for Ionospheric Tomography
RAWEX : Regional Atmospheric Warming Experiment 
RCC : Rescue Coordination Centre 
RCS : Reaction Control System 
RESINS : Redundant Strap-down Inertial Navigation System 
RESPOND : Research Sponsored
RFD : Result Framework Document 
RISAT-1 : Radar Imaging Satellite-1 
RLV-TD  : Reusable Launch Vehicle-Technology Demonstrator 
ROSA  : Radio Occultation Sounder for Atmospheric studies
ROT : Receive Only Terminal 
RRI : Raman Research Institute 
RRSC : Regional Remote Sensing Centre 
RS : Remote Sensing/ Restricted Service 
RTI : Right To Information 
SAC : Space Applications Centre 
SADA : Solar Array Drive Assembly 
SADM : Solar Array Deployment Mechanism
SAG : Space Astronomy Group 
SAPHIR  : Sounder for Probing Vertical Profile of Humidity
SAR : Synthetic Aperture Radar 
SARAL : Satellite for ARGOS and ALTIKA 
SAS&R : Satellite Aided Search and Rescue 
SatCom : Satellites for Communication 
SatMet : Satellites for Meteorology 
SATNAV : Satellite Navigation 
SBAS : Satellite Based Augmentation System 
SBT : Ship Borne Terminals 
ScaRaB : Scanner for Radiation Budget Measurement
SCC : Spacecraft Control Centre 
SCC  : Stress Corrosion Cracking 
SCL : Semi-Conductor Laboratory 
SDSC : Satish Dhawan Space Centre
SED : Supersonic Exhaust Diffusers 
SEOC : State Emergency Operations Centre 
SFCG : Space Frequency Coordination Group 
Si : Silicon 
SIT : Satellite Interactive Terminal
SITE : Satellite Instructional Television Experiment 
SITVC : Secondary Injection Thrust Vector Control 
SNR : Signal to Noise Ratio 
SoLEXS : Solar Low Energy X-ray Spectrometer 
SPL  : Space Physics Laboratory
SPS : Special Plenary Sessions 
SPS : Standard Positioning Service 
SRE-2 : Space Capsule Recovery Experiment -2
SSAU : State Space Agency of Ukraine 
SSM : Scanning Sky Monitor 
SSP : Space Studies Programme 
SSPA : Solid State Power Amplifier 
SSTC : Space Science and Technology Centre 
STEP : Satellite Telecommunications Experiment Project 
STFS : Standard Time and Frequency Signal 
SUIT : Solar Ultraviolet Imaging Telescope 
SVAB : Second Vehicle Assembly Building
SWATIS : Solar Wind and Thermal Ion Spectrometer 
SXT : Soft X-ray Imaging Telescope 
TAA  : Technical Assistance Agreement
TDMA : Time Division Multiple Access
TDP  : Technology Development Programmes
TDS  : Technology Demonstration System
TDV  Technology Demonstrator Vehicle 
TEC  Total Electron Content
TERLS  Thumba Equatorial Rocket Launching Station
TID  Travelling Ionospheric Disturbances
TIFR  Tata Institute of Fundamental Research 
TIS  : Thermal Infrared Imaging Spectrometer
TM  : Telemedicine
TMI  Trans Mars Injection
TMTC  Telemetry Telecommand
TOA Top of Atmosphere
TOSS  Transfer Orbit Support Services
TR  Transmit/Receive
TT& C  Tracking, Telemetry & Command
TWTAs  Traveling Wave Tube Amplifiers
UN  United Nations
UNCCD  UN Convention on Combating Desertification 
UN-COPUOS  United Nations Committee on Peaceful Uses of Outer Space
UN-ESCAP  United Nations Economic and Social Commission for Asia and the Pacific
UNFCCC  United Nations Framework Convention on Climate Change 
UNSPIDER  UN Platform for Space based Information for Disaster Management
and Emergency Response
UoP  University of Pune
UVIT  Ultra Violet Imaging Telescope
VAB  Vehicle Assembly Building
VELC  Visible Emission Line Coronagraph
VF  Vegetation Fraction
VNIR  Visible and Near Infrared Region 
VPN  Virtual Private Network
VPT  Video Picture Transmission
VRC  Village Resource Centre
VSATs  Very Small Aperture Terminals 
VSSC  Vikram Sarabhai Space Centre
WDC  World Data Centre