600+ ISRO Related Full Forms (2024 Updated)

Last Updated: 28 November 2023

This article is written on ISRO-Related Full Forms to help students and anyone looking for Acronyms on the Internet but didn’t find the answer or Full Forms that didn’t have any relevance to ISRO.

Before we get into the list of ISRO Related Full Forms, let’s have a quick introduction to ISRO. The Indian Space Research Organisation is the national space agency of India, headquartered in Bangalore.

It operates under the Department of Space (DOS) which is directly overseen by the Prime Minister of India, while the Chairman of ISRO acts as the executive of DOS as well.

The Indian National Committee for Space Research (INCOSPAR) was established by Jawaharlal Nehru under the Department of Atomic Energy (DAE) in 1962, at the urging of scientist Vikram Sarabhai, who recognized the need for space research. INCOSPAR grew and became ISRO in 1969, within DAE.

Page Contents

Facts About ISRO

ISRO built India’s first satellite, Aryabhata, which was launched by the Soviet Union in 1975.

In 1980, ISRO launched satellite RS-1 onboard its own SLV-3, making India the sixth country to be capable of undertaking orbital launches.

ISRO has the world’s largest constellation of remote-sensing satellites and operates the GAGAN and NAVIC satellite navigation systems.

It has sent two missions to the Moon and one to Mars.

Aditya L1 is the first Indian dedicated mission to observe the sun, which is planned to be launched by the PSLV-XL launch vehicle.

A

No.	Acronym	Full-Form
1	AA	Aluminium Alloy
2	AAI	Airports Authority of India
3	ABPP	Air Breathing Propulsion Project
4	ACL	Antrix Corporation Limited
5	ACRS	Automated Conflict Resolution System
6	ADC	Analog-toDigital Converter
7	ADCOS	Advisory Committee of on Space Sciences
8	ADP	Auxiliary Data Processing
9	ADRDE	Ariel Delivery Research and Development Establishment
10	AeSI	Aeronautical Society of India
11	AFC	Autonomous Film Cooling
12	AFTN	Aeronautical Fixed Telecommunication Network
13	AGEOS	Antarctica Ground Station for Earth Observation Satellites
14	AHPI	Association of Healthcare Providers (India)
15	AICIL	Agricultural Insurance Company of India Limited
16	AICTE	All India Council for Technical Education
17	AIR	All India Radio
18	AIT	Assembly Integration and Testing
19	ALIMCO	Artificial Limbs Manufacturing Corporation of India
20	ALS	Automatic Launch Secquence
21	AMD	Atomic Minerals Directorate
22	AO	Announcement of Opportunity
23	AOCE	Attitude and Orbit Control Electronics
24	AoI	Area of Interest
25	APEP	Ammonium Perchlorate Experimental Plant
26	APIOs	Assistant Public Information Officers
27	APOM	Astrosat Picture of the Month
28	APPLE	Ariane Passenger Payload Experiment
29	APPS	AstroSat Proposal Processing System
30	APRSAF	Asia Pacific Regional Space Agency Forum
31	APXS	Alpha Particle X-ray Spectrometer
32	AQUA	Amino Qnx Unified Architecture
33	ARFI	Acoustic Radiation Force Impulse
34	ARFI	Aerosol Radiative Forcing over India
35	ARG	Automatic Rain Gauge
36	ASAL	Algerian Space Agency
37	ASC	AstroSat Support Cell
38	ASCI	Administrative Staff College of India
39	ASDM	Aerial Services and Digital Mapping
40	ASEAN	Association of South East Asian Nations
41	ASI	Astronautical Society of India
42	ASICs	Application Specific Integrated Circuits
43	ASLV	Augmented Satellite Launch Vehicle
44	ASPEX	Aditya Solar Wind Particle Experiment
45	ASTDC	Advanced Space Technology Development Cell
46	AstroSat	Astronomy Satellite
47	ATAC	AstroSat Time Allocation Committee
48	ATC	AstroSat Technical Committee
49	ATCTM	Atmospheric Trace Gases Chemistry and Transport Modeling
50	ATL	Atal Tinkering Lab
51	ATS	American Technology Satellite
52	ATV	Advanced Technology Vehicle
53	AVIRIS-NG	Advanced Visible and Infrared Imaging Spectrometer-Next Generation
54	AWiFS	Advanced Wide Field Sensor
55	AWS	Automatic Weather Stations

B

No.	Acronym	Full-Form
1	BCs	Boundary Conditions
2	BDR	Baseline Design Review
3	BFFR	Babina Field Fire Range
4	BIEC	Bengaluru International Exhibition Centre
5	BPOFM	Bunched Passage Orifice Flow Meter
6	BSS	Block Storage Space
7	BSX	Bengaluru Space Expo

C

No.	Acronym	Full-Form
1	CA-CFAR	Cell Averaging Constant False Alarm Rate
2	CAHO	Consortium of Accredited Healthcare Organization
3	CARTOSAT	Cartography Satellite
4	CATVAC	Comprehensive Assembly & Test Vacuum Chamber
5	CBM-Z	Carbon-Bond Mechanism Version Z
6	C-C	Carbon-Carbon
7	CCD	Charged Coupled Device
8	CCoE	Chief Controller of Explosives
9	CDMA	Code Division Multiple Access
10	CE	Cryogenic Engine
11	CEJ	Counter Electrojet
12	CeNSE	Centre for Nano Science and Engineering
13	CEOS	Committee on Earth Observation Satellites
14	CES	Crew Escape System
15	CFRP	Composite Fibre Reinforced Plastic
16	CFT	Cold Flow Test
17	CGMS	Coordination Group on Meteorological Satellites
18	CH2O	Chandrayaan-2 Orbiter
19	CHAMAN	Coordinated Horticulture Assessment and Management using geo-informatics
20	CII	Confederation of Indian Industry
21	CM	Crew Module
22	CME	Continuing Medical Education
23	CMOS	Complementary Metal Oxide Semiconductor
24	CMS	Communication & Data Relay Satellite
25	CMSE	Components for Military & Space Electronics
26	CNC	Computer Numerical Control
27	CNES	Centre National d’Etudes Spatiales (National Centre for Space Studies)
28	COB	Chip On Board
29	CoE	Centre of Excellence
30	COP	Committee of Parties
31	COPLOT	Committee On Papers Laid On the Table
32	COPUOS	Committee on the Peaceful Uses of Outer Space
33	CORS	Cross-Origin Resource Sharing
34	COSPAR	Committee on Space Research
35	COWAA	Computerized Working in Administrative Areas
36	CPCB	Central Pollution Control Board
37	CPCS	Cabin Pressure Control System
38	CPIOs	Central Public Information Officers
39	CPM	Charged Particle Monitor
40	CPSEs	Central Public Sector Enterprises
41	CRS	Coarse Resolution ScanSAR
42	CSA	Canadian Space Agency
43	CSR	Corporate Social Responsibility
44	CSSTE	Centre for Space Science and Technology Education
45	CSSTE-AP	Space Science and Technology Education in Asia and The Pacific
46	CSTT	Commission For Scientific & Technical Terminology
47	CUS	Cryogenic Upper Stage
48	CWDS	Cyclone Warning Dissemination System
49	CZTI	Cadmium-Zinc-Telluride Imager

D

No.	Acronym	Full-Form
1	DAC&FW	Department of Agriculture & Farmers Welfare
2	DAE	Department of Atomic Energy
3	DC	Deep Convective
4	DD	Doordarshan
5	DECU	Development and Educational Communication Unit
6	DEM	Digital Elevation Model
7	DeSSEI	Development of Space Start-up Ecosystem in India
8	DFRS	Dual Frequency Radio Science
9	DF-SAR	Dual-Frequency Synthetic Aperture Radar
10	DGCA	Directorate General of Civil Aviation
11	DLA	Dual Launch Adaptor
12	DM	Dark Matter
13	DMS	Dynamics Middle Atmosphere
14	DMS	Disaster Management Support
15	DOA	Dioctyl Adipate
16	DOHS	Directorate of Occupational Health and Safety
17	DOI	Digital Object Identifiers
18	DoLR	Department of Land Resources
19	DOORS	Dynamic Object Oriented Requirements System
20	DOS	Department of Space
21	DPT	Differential Pressure Transducers
22	DRDO	Defence Research and Development Organisation
23	DRE	Direct Radiative Forcing
24	DRT	Data Relay Transponder
25	DSC	Decision Support Centre
26	DSI	Drought Severity Index
27	DSN	Deep Space Network
28	DSNG	Digital Satellite News Gathering
29	DSPTs	Digital Satellite Phone Terminal
30	DSRQ	Directorate of Safety Reliability and Quality
31	DTH	Direct To Home
32	DWDS	Disaster Warning Dissemination Systems
33	DWR	Doppler Weather Radars

E

No.	Acronym	Full-Form
1	ECIL	Electronics Corporation of India Limited
2	ECLSS	Environmental Control and Life Support System
3	ECMWF	European Centre for Medium Range Weather Forecasts
4	ECVs	Essential Climate Variables
5	EGC	Engine Gimbal Control
6	EIA	Equatorial Ionization Anomaly
7	EIRP	Effective Isotropic Radiated Power
8	EMA	Electromechanical Actuators
9	EMISAT	Electromagnetic Intelligence-gathering Satellite
10	ENWi	Electron density and Neutral Wind
11	EO	Earth Observation
12	EOC	Early Operations Capability
13	EOS	Earth Observation Satellite
14	EPRIS	Empowering Panchayati Raj Institutions Spatially
15	ESA	European Space Agency
16	ESCAP	Economic and Social Commission for Asia and the Pacific
17	ESCES	Experimental Satellite Communication Earth Station
18	ESIC	Employees State Insurance Corporation
19	EUMETSAT	European Organisation for Exploitation of Meteorological Satellites
20	EWS	Equatorial Wave Studies

F

No.	Acronym	Full-Form
1	FASAL	Forecasting Agricultural output using Space, Agrometeorological and Land based observations
2	FCC	False Color Composite
3	FDR	Full Dress Rehearsal
4	FEAST	Finite Element Analysis of Structures
5	FLEWS	Flood Early Warning System
6	FLP	First Launch Pad
7	FM	Flight Model
8	FOV	Field Of View
9	FRS	Fine Resolution Stripmap
10	FSI	Forest Survey of India
11	FSS	Fixed Satellite Services
12	FTP	File Transfer Protocol
13	FTS	Flight Termination System
14	FUV	Far Ultraviolet
15	FWHM	Full Width at Half Maximum

G

No.	Acronym	Full-Form
1	GAC	Global Area Coverage
2	GAGAN	GPS Aided GEO Augmented Navigation
3	GALEX	Galaxy Evolution Explorer
4	GCN	Ground Control Network,
5	GCP	Geo Centric Phase
6	GCP	Ground Control Points
7	GEO	Geostationary Earth Orbit
8	GEOS-Chem	Goddard Earth Observation System Chemical
9	GFS	Global Forecasting System
10	GHRC	Geo High Resolution Camera
11	GHRCE	G.H.Raisoni College of Engineering
12	GHz	Giga Hertz
13	GIS	Geographical Information System
14	GISAT	Geo Imaging Satellite
15	GLOF	Glacial Lake Outburst Flood
16	GMRT	Giant Metrewave Radio Telescope
17	GNSS	Global navigation satellite system
18	GOCO	Government Owned and Company Operate
19	GOES	Geo-stationary Operational Environmental Satellite
20	GPP	Gross Primary Production
21	GPR	Ground Penetrating Radar
22	GPS	Global Positioning System
23	GRBs	Gamma-ray Bursts
24	GSAT	Geo Synchronous Satellite
25	GSI	Geological Survey of India
26	GSLV	Geosynchronous Satellite Launch Vehicle
27	GSO	Geo Synchronous Orbit
28	GTO	Geosynchronous Transfer Orbit

H

No.	Acronym	Full-Form
1	Ha	Hectare
2	HAL	Hindustan Aeronautics Limited
3	HAVA	Hypersonic Air Breathing Vehicle with Air frame integrated system
4	HBCSE	Homi Bhabha Centre for Science Education
5	HCP	Helio Centric Phase
6	Health-QUEST	Health-Quality Upgradation Enabled through Space Technology
7	HEL1OS	High Energy L1 Orbiting X-ray Spectrometer
8	HEM	High-altitude Escape Motor
9	HGA	High Gain Antenna
10	HMC	Hybrid Micro Circuit
11	hpa	hecta pascal
12	HRS	High Resolution SpotLight
13	HSFC	Human Space Flight Centre
14	HSP	Human Spaceflight Programme
15	HTPB	Hydroxyl Terminated Poly Butadiene
16	HTS	High Throughput Satellite
17	HTVE	High Thrust Vikas Engine
18	HV	High Voltage
19	HySIS	Hyper Spectral Image Sensor

I

No.	Acronym	Full-Form
1	I&CAD	Irrigation and Computer-Aided Design
2	IA	Implementing Arrangement
3	IAA	International Academy of Astronautics
4	IAC	International Astronautical Congress
5	IADC	Inter-Agency Space Debris Coordination Committee
6	IAF	International Astronautical Federation
7	IAOP	Indian Astronomy Olympiad Programme
8	ICC	INSAT Coordination Committee
9	ICD	Interface Control Document
10	ICESat	Ice, Cloud, and land Elevation Satellite
11	ICGNSS	International Committee for Global Navigation Satellite Systems
12	ICs	Initial Conditions
13	ICT	Information & Communication Technology
14	IDSN	Indian Deep Space Network Complex
15	IGBP	ISRO Geosphere Biosphere Programme
16	IGS	International Ground Stations
17	IIA	Indian Institute of Astrophysics
18	IIRS	Indian Institute of Remote Sensing
19	IISc	Indian Institute of Science
20	IISL	International Institute of Space Law
21	IIST	Indian Institute of Space Science and Technology
22	IISU	ISRO Inertial Systems Unit
23	IITs	Indian Institute of Technologies
24	IMAT	Integrated Main Parachute Airdrop Test
25	IMD	India Meteorological Department
26	IMDPS	INSAT Meteorological Data Processing System
27	IMG	Inter-Ministerial Group
28	IMGEOS	Integrated Multi mission Ground segment for Earth Observation Satellites
29	IMO	International Maritime Organization
30	IMPRINT	IMPacting Research INnovation and Technology
31	IMS	Indian Mini Satellite
32	INAE	Indian National Academy of Engineering
33	INC	IRNSS Navigation Centre
34	INCOIS	Indian National Centre for Ocean Information Service
35	INCOSPAR	Indian National Committee for Space Research
36	INLUS	Indian Navigation Land Uplink Stations
37	INMCC	Indian Mission Control Centres
38	INPE	Instituto Nacional de Pesquisas Espaciais (National Institute for Space Research)
39	INRES	Indian Reference Stations
40	INSAT	Indian National Satellite
41	IN-SPACe	Indian National Space Promotion and Authorization Center
42	IOT	In Orbit Testing
43	IPAB	Integrated Product Assurance Board
44	IPDC	International Programme for the Development of Communication
45	IPR	Intellectual Property Rights
46	IPRC	ISRO Propulsion Complex
47	IRCDR	IRNSS CDMA Ranging Stations
48	IRDCN	IRNSS Data Communication Network
49	IRIMS	IRNSS Range and Integrity Monitoring Stations
50	IRNSS	Indian Regional Navigation Satellite System
51	IRNWT	IRNSS Network Timing Facility
52	IRS	Indian Remote Sensing Satellite
53	IRSCF	IRNSS Spacecraft Control Facility
54	ISAC	Information Sharing and Analysis Center
55	ISAC	ISRO Satellite Centre
56	ISCCM	Indian Society of Critical Care Medicine
57	ISEA	Indian Scientific Expedition to Antarctica
58	ISECG	International Space Exploration Coordination Group
59	ISITE	ISRO Satellite Integration and Test Establishment
60	ISP	Indian Space Programme
61	ISPRS	International Society for Photogrammetry and Remote Sensing
62	ISRO	Indian Space Research Organisation
63	ISS	International Space Station
64	ISSDC	Indian Space Science Data Centre
65	IST	Indian Standard Time
66	ISTRAC	ISRO Telemetry, Tracking, and Command Network
67	ITBP	Indo Tibetan Border Police
68	IUCAA	Inter-University Centre for Astronomy and Astrophysics
69	IWMP	Integrated Watershed Management Programme

J

No.	Acronym	Full-Form
1	JAXA	Japan Aerospace Exploration Agency
2	JCM	Joint Consultative Machinery
3	JITsat	Jeppiaar Institute of Technology, Sriperumbudur

K

No.	Acronym	Full-Form
1	KaRA	Ka-Band Radio Altimeter
2	kbps	kilobits per second
3	KCP	Kheda Communications Project
4	KSC	Kennedy Space Center

L

No.	Acronym	Full-Form
1	LAB	Launch Authorisation Board
2	LAC	Local Area Coverage
3	LAM	Liquid Apogee Motor
4	LAP	Lyman Alpha Photometer
5	LAPT	Lander Actuator Performance Test
6	LAXPCs	Large Area X-ray Proportional Counters
7	LEM	Low-altitude Escape Motor
8	LC	Lander Craft
9	LCS	Lagrangian Coherent Structures
10	LEO	Low Earth Orbit
11	LEOS	Laboratory for Electro-Optics Systems
12	LGA	Low Gain Antenna
13	LiDAR	Light Detection and Ranging
14	LIN	Liquid Nitrogen
15	LIRAP	Laser Inertial Reference & Accelerometer Package
16	LIS	Land Information System
17	LISS	Linear Imaging SelfScanning Censors
18	LiVHySI	Limb Viewing Hyper Spectral Imager
19	LOX	Liquid Oxygen
20	LP	Launch Phase
21	LPDC	Lander Pattern Detection Camera
22	LPFT	Low Pressure Fuel Turbo
23	LPOT	Low Pressure Oxidiser Turbo pump
24	LPSC	Liquid Propulsion Systems Centre
25	LSPT	Lander Sensor Performance Test
26	LST	Land Surface Temperature
27	LSWI	Land Surface Water Index
28	LULC	Land Use Land Cover
29	LUTs	Local User Terminals
30	LWIR	Long Wave Infrared

M

No.	Acronym	Full-Form
1	M&C	Monitor & Control
2	M&E	Monitoring & Evaluation
3	MADRAS	Microwave Analysis and Detection of Rain and Atmospheric Structures
4	MATLAB	MATrix LABoratory
5	Mbps	Megabits per seconds
6	MCC	Mars Color Camera
7	MCF	Master Control Facility
8	MCNC	Marine Carbon Nitrogen Cycles
9	MEMS	Micro Electro Mechanical System
10	MENCA	Mars Exospheric Neutral Composition Analyser
11	MEO	Medium Earth Orbit
12	MGA	Mid Gain Antenna
13	MHRD	Ministry of Human Resource Development
14	MIP	Moon Impact Probe
15	MIS	Management Information System
16	MMH	Mono Methyl Hydrazine
17	MNCFC	Mahalanobis National Crop Forecasting Centre
18	MoD	Ministry of Defence
19	MODIS	Moderate Resolution Imaging Spectroradiometer
20	MOI	Mars Orbit Insertion
21	MOM	Mars Orbiter Mission
22	MON	Mixed Oxides of Nitrogen
23	MONEX	Monsoon Experiment
24	MOPITT	Measurements of Pollution in the Troposphere
25	MOSDAC	Meteorological and Oceanographic Satellite Data Archival Centre
26	MOTR	Multi-Object Tracking Radar
27	MoU	Memorandum of understanding
28	MOX	Mission Operations Complex
29	MP	Martian Phase
30	MPW	Multi-Product Wafer
31	MRCCs	Maritime Rescue Coordination Centres
32	MRD	Ministry of Rural Development
33	MRR	Mission Readiness Review
34	MRS	Medium Resolution ScanSAR
35	MSA	Mechanical Systems Area
36	MSC	Maritime Safety Committee
37	MSDE	Ministry of Skill Development & Entrepreneurship
38	MSM	Methane Sensor for Mars
39	MSS	Mobile Servicing System
40	MST	Mobile Service Tower
41	MST	Mesosphere, Stratosphere, Troposphere

N

No.	Acronym	Full-Form
1	NARL	National Atmospheric Research Laboratory
2	NASA	National Aeronautics and Space Administration
3	NavIC	Navigation with Indian Constellation
4	NCEP	National Centre for Environmental Prediction
5	NCP	National Carbon Project
6	NDEM	National Database for Emergency Management
7	NDRF	National Disaster Response Force
8	NDVI	Normalised Difference Vegetation Index
9	NEC	North Eastern Council
10	NEE	Net Ecosystem Carbon Exchange
11	NER	North Eastern Region
12	NE-SAC	North Eastern Space Applications Centre
13	NGC	New General Catalogue
14	NGOs	Non-Government Organizations
15	NGPE	Non-Government Private Entity
16	NHN	Nickel Hydrazine Nitrate
17	NIAS	National Institute of Advanced Studies
18	NICES	National Information system for Climate and Environment Studies
19	NICNET	National Informatics Centre Network
20	NICNET	Nation Wide Computer Communication Network
21	NIO	North Indian Ocean
22	NISAR	NASA-ISRO Synthetic Aperture Radar
23	NOAA	National Oceanic and Atmospheric Administration
24	NOBLE	Network of Observatories for Boundary Layer Experiments
25	NPLI	National Physical Laboratory India
26	NNRMS	National Natural Resources Management System
27	NPD	NASA Policy Directive
28	NPP	Net Primary Productivity
29	NRC	Natural Resource Census
30	NR-CENSUS	Natural Resources Census
31	NRSC	National Remote Sensing Centre
32	NSIL	NewSpace India Limited
33	NSSO	National Sample Survey Office
34	NSSS	National Space Science Symposium
35	NUV	Near Ultraviolet
36	NWH	North West Himalaya

O

No.	Acronym	Full-Form
1	OBC	On Board Computer
2	OBR	Optical Butting Registration
3	OC	Orbiter Craft
4	OCM	Ocean Colour Monitor
5	OCO	Orbiting Carbon Observatory
6	OGDRs	Operational Geophysical Records
7	OLI	Operational Land Imager
8	OLICs	Official Language Implementation Committees
9	OP	Orbital Phase
10	OPO	Optical Parametric Oscillator
11	ORV	Orbital Re-entry Vehicle
12	OSCAT	Ocean scatterometer
13	OS-CFAR	Ordered Statistics Constant False Alarm Rate

P

No.	Acronym	Full-Form
1	P&T	Post and Telegraphs
2	PAA	Phased Array Antenna
3	PAT	Pad Abort Test
4	PC-NNRMS	Planning Committee on National Natural Resources Management System
5	PDMS	Polydimethylsilane
6	PDR	Preliminary Design Review
7	PFA	Post Flight Analysis
8	PHMS	Personal Hygiene Management System
9	PI	Principal Investigators
10	PICs	Pacific Island Countries
11	PISat	PESIT Imaging Satellite
12	PLANEX	Planetary Science and Exploration
13	POCs	Payload Operations Centers
14	POLIX	Polarimeter Instrument in X-rays
15	PRL	Physical Research Laboratory
16	PSLV	Polar Satellite Launch Vehicle
17	PSP	Pre-Signalised Points
18	PSTN	Public Switched Telephone Network
19	PV	Performance Verification

Q

No.	Acronym	Full-Form
1	QBO	Quasi-Biennial Oscillation
2	QKD	Quantum Key Distribution
3	QLD	Quick look Display
4	QPOs	Quasi Periodic Oscillations

R

No.	Acronym	Full-Form
1	R&D	Research & Development
2	RaBIT	Radio Beacon for Ionospheric Tomography
3	RAC-S	Regional Academic Centre for Space
4	RAPID	Realtime Analysis Product & Information Dissemination
5	RAWEX	Regional Aerosol Warming Experiment
6	RCCs	Rescue Coordination Centres
7	RCS	Reaction Control System
8	RCT	Reaction Control Thrusters
9	RDAS	Reconfigurable Data Acquisition System
10	RESPOND	Research Sponsored
11	RFQ	Request for Qualification
12	RIS	RLV Interface System
13	RISAT	Radar Imaging Satellite
14	RLV-TD	Reusable Launch Vehicle-Technology Demonstrator
15	RN	Radio Networking
16	ROSA	Roll Out Solar Array
17	ROSCOSMOS	Russian Federal Space Agency
18	ROTs	Receive Only Terminals
19	RoU	Right of Usage
20	RRI	Raman Research Institute
21	RRSCs	Regional Remote Sensing Centres
22	RS	Restricted Service
23	RSDP	Remote Sensing Data Policy
24	RTI	Right To Information
25	RTRS	Rail Track Rocket Sled
26	RXTE	Rossi X-ray Timing Explorer

S

No.	Acronym	Full-Form
1	S&T	Scientific and Technical
2	SAA	Space Act Agreements
3	SAA	South Atlantic Anomaly
4	SAARC	South Asian Association for Regional Cooperation
5	SAC	Space Applications Centre
6	SADM	Solar Array Drive Mechanism
7	SAFE	Solar Array Flight Experiment
8	SANSA	South African National Space Agency
9	SAO	Stratospheric Semiannual Oscillation
10	SAP	State Action Plan
11	SAPHIR	Sounder for Probing Vertical Profiles of Humidity
12	SAR	Synthetic Aperture Radar
13	SAR	Search And Rescue
14	SARAL	Systematic Administrative Reforms for Achieving & Learning
15	SAS	Surface Active Substances
16	SAS&R	Satellite Aided Search and Rescue
17	SATCOM	Satellite Communication
18	SATNAV	Satellite Navigation
19	SBAS	Satellite Based Augmentation System
20	SCAT	Semicryo flow control Components Assembly and Test
21	SCENC	Semi Cryo Engine Nozzle Closure
22	SCES	Satellite Control Earth Stations
23	SCFT	Semi-cryogenic Cold Flow Test facility
24	SCL	Semi-Conductor Laboratory
25	SCORPIO	Satellite based Cyclone Observation for Real-time Prediction over Indian Ocean
26	SCPD	Soil Carbon Pools and Dynamics
27	SCRAMJET	Supersonic Combustion Ramjet
28	SDLP	Space-based Distance Learning Programme
29	SDM	System Demonstration Module
30	SDSAT	Satish Dhawan Sat
31	SDSC	Satish Dhawan Space Centre
32	SEMI	Society for Emergency Medicine India
33	SFCG	Space Frequency Coordination Group
34	SGI	Silicon Graphics
35	SHAR	Sriharikota
36	SIS	Signal-In-Space
37	SITs	Satellite Interactive Terminals
38	SITE	Satellite Instructional Television Experiment
39	SMA	Shape Memory Alloy
40	SMART	Satellite Meteorology and Oceanography Research and Training
41	S-NAP	Space-National Academic Partner
42	SNR	Signal-to-Noise Ratio
43	SOI	Sphere of Influence
44	SOLAR	Sun of Light Active Reaction
45	SoLEXS	Solar Low Energy X-ray Spectrometer
46	SPACE	Spacecraft Prelaunch Automatic Checkout Equipment
47	SPADEX	Space Docking Experimnet
48	SPDM	Solar Panel Drive Mechanism
49	SPL	Space Physics Laboratory
50	SPOCs	Search and Rescue Points of Contact
51	SPROB	Solid Propellant Space Booster Plant
52	SPS	Standard Positioning Service
53	SRSAC	State level Remote Sensing Application Centre
54	SSC	Satellite Control Centre
55	SSLV	Small Satellite Launch Vehicle
56	SSM	Scanning Sky Monitor
57	SSP	Space Studies Programme
58	SSPA	Solid State Power Amplifier
59	SSPO	Sun Synchronous Polar Orbit
60	SST	Sea Surface Temperature
61	SSTC	Space Science and Technology Centre
62	SSTL	Survey Satellite Technology Limited
63	SSTM	Sea Surface Temperature Monitor
64	SSV	Space Service Volume
65	STC	Space Technology Cell
66	STEM	Science, Technology, Engineering, Mathematics
67	STEP	Satellite Telecommunication Experiments Project
68	STFS	Standard Time and Frequency Signal
69	STPs	Structured Training Programmes
70	Sub-GTO	Sub-Geosynchronous Transfer Orbit
71	SUIT	Solar Ultraviolet Imaging Telescope
72	SVAB	Second Vehicle Assembly Building
73	SWIR	Short Wave Infrared
74	SXT	Soft X-ray imaging Telescope

T

No.	Acronym	Full-Form
1	TDP	Technology Development Programmes
2	TDV	Technology Demonstrator Vehicle
3	TE	Tele-Education
4	TEC	Total Electron Content
5	TECU	Transmission Electronic Control Unit
6	TERLS	Thumba Equatorial Rocket Launching Station
7	TERRA	Transportation Engineering and Road Research Alliance
8	TG	Temperature Greenness
9	THCS	Temperature & Humidity Control System
10	TIMED	Thermosphere, Ionosphere, Mesosphere, Energetics, and Dynamics
11	TIRS	Thermal Infrared Sensors
12	TIS	Thermal Infrared Imaging Spectrometer
13	TM	Telemedicine
14	TMA	Trimethyl Aluminum Experiment
15	TMC	Terrain Mapping Camera
16	TM-CFAR	Trimmed Mean Constant False Alarm Rate
17	TOA	Top of the Atmosphere
18	TOSS	Transfer Orbit Support Service
19	TRAI	Telecom Regulatory Authority of India
20	TSR	Tycho Supernova Remnant
21	TSTO	Two Stage To Orbit
22	TT&C	Telementry & Commanding
23	TTC	Telemetry and Telecommand
24	TV	Television
25	TWRIS	Telangana Water Resources Information System

U

No.	Acronym	Full-Form
1	UAV	Unmanned Aerial Vehicle
2	UAY	Uchchatar Avishkar Yojana
3	UFA	Unfurlable antenna
4	UFS	Urban Frame Survey
5	USGS	United States Geological Survey
6	USO	Udaipur Solar Observatory
7	UH25	Unsymmetrical Dimethyl Hydrazine + 25% Hydrazine Hydrate
8	UN	United Nations
9	UNISPACE	United Nations Conference on the Exploration and Peaceful Uses of Outer Space.
10	UNNATI	UNispace Nanosatellite Assembly & Training by ISRO
11	UNSPIDER	UN Platform for Space based Information for Disaster management and Emergency Response
12	UP	Utilisation Program
13	URSC	U R Rao Satellite Centre
14	USGS	United States Geological Survey
15	UT	University of Twente
16	UV	Ultraviolet
17	UVIT	Ultra-Violet Imaging Telescope

V

No.	Acronym	Full-Form
1	VEDAS	Visualisation of Earth Observation Data and Archival System
2	VELC	Visible Emission Line Coronagraph
3	VER	Volume Emission Rate
4	VHRR	Very High Resolution Radiometer
5	VHRS	Very High Resolution Satellite
6	VIS	Verification Information System
7	VISWAS	Village based Initiative to Synergise Health, Water, And Sanitation
8	VKS	Vikram-Suborbital
9	VLSI	Very Large Scale Integrated Circuit
10	VNIR	Very Near Infra Red
11	VRC	Village Resource Centre
12	VSAT	Very Small Aperture Terminal
13	VSSC	Vikram Sarabhai Space Centre
14	VTM	Velocity Trimming Module