AAI : Airport Authority of India

AARS : Asian Association for Remote Sensing

ADCOS : Advisory Committee on Space Sciences (constituted by ISRO)

AFTN : Aeronautical Fixed Telecommunication Network

APIB : Agro-climatic Planning and Information Bank

APM : Antenna Positioner Mechanism

ASLV : Augmented Satellite Launch Vehicle

AWiFS : Advanced Wide Field Sensors

AWS : Automatic Weather Station

BIRD : Bispectral and Infrared Remote Detection

BSS : Broadcast Satellite Service

CAPE : Crop Acreage and Production Estimation

CARTOSAT : Satellite for Cartography

CCD : Charge Coupled Device

CD : Compact Disk

CEOS : Committee on Earth Observation Satellites

CGMS : Coordinating Group on Meteorological Satellites

CIL : Coal India Limited

CRZ : Coastal Regulation Zone

CIL : Coal India Limited

CNES : French Space Agency

COPUOS : Committee on Peaceful Uses of Outer Space (of United Nations)

COSPAR : (International) Committee on Space Research

CRABEX : Coherent Radio Beacon Experiment

CSSTE-AP : Centre for Space Science and Technology Education in Asia and the Pacific

CUSP : Cryogenic Upper Stage Project

CWC : Central Water Commission

CWDS : Cyclone Warning Dissemination System

DAB : Digital Audio Broadcast

DBT : Department of Bio-Technology

DCP : Data Collection Platform

DECU : Development and Educational Communication Unit

DEM : Digital Elevation Model

DES : Delhi Earth Station

DLR : German Space Agency

DOS : Department of Space

DOT : Department of Telecommunications

DRS : Direct Reception Set (TV)

DSNG : Digital Satellite News Gathering

DTH : Direct To Home

DTM : Digital Terrain Modelling

DWS : Disaster Warning System

eirp : effective isotropic radiated power

ELT : Emergency Location Transmitter

EMC : Electro Magnetic Compatibility

EMI : Electro Magnetic Interference

EOC : Edge Of Coverage

EOL : End Of Life

EOS : Earth Observation System

ERS : European Remote Sensing Satellite

ESA : European Space Agency

FAT : Fly Away Terminal

FRSS : Fast Recovery Star Sensor

FASAL : Forecasting Agricultural output using Space Agro-meteorology and Land-based observations

FCC : False Colour Composite

FM : Frequency Modulation

FOP : Final Operational Phase

FSS : Fixed Satellite Services

GAIL : Gas Authority of India Limited

GEOSAR : Geo-synchronous Satellite Aided Search & Rescue

GIS : Geographical Information System

GMRT : Giant Metrewave Radio Telescope

GMT : Greenwich Mean Time

GNFC : Gujarat Narmada Valley Fertilizer Corporation

GONG : Global Oscillations Network Group

GPS : Global Positioning System

GRB : Gamma Ray Burst

GSAT : Satellite launched by GSLV

GSLV : Geo-synchronous Satellite Launch Vehicle

GSI : Geological Survey of India

GTO : Geo-synchronous Transfer Orbit

GTS : Global Telecommunications System

HF : High Frequency

HTL : High Tide Line

HTPB : Hydroxyl Terminated Poly Butadine

HVNET : High Speed V-SAT Network

IADC : Inter Agency Space Debris Coordination Committee

IAF : International Astronautical Federation

ICC : INSAT Coordination Committee

IGBP : ISRO Geosphere Biosphere Programme

IGNOU : Indira Gandhi National Open University

IGOS : International Global Observing Strategy

IIRS : Indian Institute of Remote Sensing

IISU : ISRO Inertial Systems Unit

IITM : Indian Institute of Tropical Meteorology

IMD : India Meteorological Department

IMDPS : INSAT Meteorological Data Processing System

IMSD : Integrated Mission for Sustainable Development

INCOIS : Indian National Centre for Ocean Information Services

INDOEX : Indian Ocean Experiment

INMCC : Indian Mission Control Centre

INSAT : Indian National Satellite

INTELSAT : International Telecommunication Satellite

IOT : In Orbit Test

IRS : Indian Remote Sensing Satellite

ISPRS : International Society for Photogrammetry and Remote Sensing

I-STEP : Indian Solar Terrestrial Energy Programme

ISAC : ISRO Satellite Centre

ISRO : Indian Space Research Organisation

ISTRAC : ISRO Telemetry, Tracking and Command Network

ITI : Indian Telephone Industries ITU : International Telecommunications Union

JCM : Joint Consultative Machinery

JDCP : Jhabua Development Communications Project

KBK : Kalahandi-Bolangir-Koraput

LEOS : Laboratory for Electro Optic Sensors

LEOSAR : Low Earth Orbit Search & Rescue

LISS : Linear Imaging Self Scanner

LPSC : Liquid Propulsion Systems Centre

LTL : Low Tide Line

LUT : Local User Terminal

MCC : Mission Control Centre

MCF : INSAT Master Control Facility

MCPC : Multi Channel Per Carrier

MDDC : Meteorological Data Dissemination Centre

METSAT : Meteorological Satellite

MOS : Modular Opto-Electronic Scanner

MSMR : Multi-frequency Scanning Microwave Radiometer

MSS : Mobile Satellite Service

NCA : Narmada Control Authority

NE-SAC : North Eastern-Space Applications Centre

NEC : North Eastern Council

NFAP : National Frequency Allocation Plan

NFL : National Fertilisers Limited

NICNET : National Informatics Centre Network

NMRF : National Mesosphere- stratosphere-Troposphere Radar Facility

NNRMS : National Natural Resources Management System

NOAA : National Oceanic and Atmospheric Administration (USA)

NPC : Nuclear Power Corporation

NPL : National Physical Laboratory

NRIS : National (Natural) Resources Information System

NRSA : National Remote Sensing Agency

NSE : National Stock Exchange

NSSS : National Space Science Symposium

NTPC : National Thermal Power Corporation

OCM : Ocean Colour Monitor

OCEANSAT : Ocean Satellite (IRS-P4)

OLIC : Official Language Implementation Committee

ONGC : Oil and Natural Gas Commission

ORG : Optical Range Gauge

PAN : Panchromatic Camera (of IRS)

PC-NNRMS : Planning Committee of NNRMS

PRL : Physical Research Laboratory

PROBA : Project for On-Board Autonomy

PSLV : Polar Satellite Launch Vehicle

PTI : Press Trust of India

RCC : Rescue Coordination Centre

RESINS : Redundant Strap-down Inertial Navigation System

RESOURCESAT: Satellite for resources survey

RESPOND : Research Sponsored by ISRO

RN : Radio Networking

RRSSC : Regional Remote Sensing Service Centre

RSDP : Remote Sensing Data Policy

RSR : Rohini Sounding Rocket

SAC : Space Applications Centre

SASE : Snow and Avalanche Study Establishment

SAS&R : Satellite Aided Search and Rescue

SBAS : Space Based Augmentation System

SCC : Spacecraft Control Centre

SCES : Satellite Control Earth Station

SCPC : Single Channel Per Carrier

SFCG : Space Frequency Coordination Group

SHAR : Sriharikota Range

SHARES : Sharing of Experience in Space

SIET : State Institutes of Educational Technology

SITVC : Secondary Injection Thrust Vector Control

SITE : Satellite Instructional Television Experiment

SNG : Satellite News Gathering

SPL : Space Physics Laboratory

SROSS : Stretched Rohini Satellite Series

SRSAC : State Remote Sensing Applications Centres

SSPA : Solid State Power Amplifier

STC : Space Technology Cell

STEP : Satellite Telecommunication Experiment Project

STFSDS : Standard Time and Frequency Signal Dissemination Service

SWIR : Short Wave Infrared

TDCC : Training and Development Communication Channel (INSAT)

TDS : Technology Demonstration System

TERLS : Thumba Equatorial Rocket Launching Station

TES : Technology Experiment Satellite

TTC : Telemetry, Tracking and Command

TVRO : Television Receive Only

TWTA : Travelling Wave Tube Amplifier

UDMH : Unsymmetrical Dimethyl Hydrazine

UHF : Ultra High Frequency

UN : United Nations

UN-COPUOS : United Nations Committee on Peaceful Uses of Outer Space

UN-ESCAP : United Nations Economic and Social Commission for Asia and the Pacific

UPSO : Uttar Pradesh State Observatory

USO : Udaipur Solar Observatory

UVIT : UV Imaging Telescope

VHF : Very High Frequency

VHRR : Very High Resolution Radiometer

VLPT : Very Low Power Transmitter

VNIR : Visible/Near Infrared

V-SAT : Very Small Aperture Terminals

VSSC : Vikram Sarabhai Space Centre

WMO : World Meteorological Organisation

WiFS : Wide Field Sensor

XSM : X-ray Sky Monitor