Vikram Sarabhai Space Centre (VSSC)

• Lead Centre for rocket and launch vehicle projects.
• R&D activities cover avionics, aeronautics, materials and mechanical engineering, solid propulsion and composites, propellants, polymers and chemicals, systems reliability and computer and information.
• Ammonium Perchlorate Experimental Plant under VSSC functions at Aluva.
• Space Physics Laboratory carries out research in atmospheric and related space sciences.
• Achievements include development of sounding rockets, ISRO launch vehicles, SLV 3, ASLV and PSLV. GSLV is under development.

Liquid Propulsion Systems Centre (LPSC)

• Engaged in development of liquid and cryogenic propulsion stages for launch vehicles and auxiliary propulsion systems for both launch vehicles and satellites .
• Activities related to liquid propulsion stages, cryogenic propulsion stages and control systems for launch vehicles and spacecraft at Thiruvanthapuram.
  Test facilities are located at Mahendragiri in Tamil Nadu. Precision fabrication facilities, development of transducers and integration of satellite propulsion systems are carried out at Bangalore.
• Achievements include development of liquid propellant stages for PSLV, control systems for SLV-3, ASLV and GSLV, satellite propulsion systems including those for INSAT and IRS and production of pressure transducers.
• Development of Cryogenic Upper Stage for GSLV under way.

Satish Dhawan Space Centre, SHAR

• Main launch centre of ISRO, 100 km north of Chennai.
• Processes solid propellant motors and conduct ground tests.
• Launch ranges at Thumba also for sounding rockets.
• Achievements include establishment of launch complexes for Sounding rockets, SLV- 3, ASLV and PSLV. Launch complex now under augmentation for GSLV.

ISRO Inertial Systems Unit (IISU)

• Carries out development of inertial sensors and systems for satellites and launch vehicles covering navigation systems, satellite inertial systems, bearing and space tribology and inertial systems integration and simulation.
• Facilities include precision fabrication, assembly, integration and testing.
• Achivements include development of inertial systems for ISRO launch vehicles and satellites, solar array drive assemblies, scanning mechanisms, etc.
• Currently engaged in development of Inertal Navigation System for GSLV and INSAT and IRS satellites.

ISRO Satellite Centre (ISAC)

• Lead centre for satellite technology.
• Activities cover digital systems, power systems, communication and microwave systems, spacecraft assembly integration and testing, structures, thermal, spacecraft mechanisms, control systems, spacecraft mission planning and analysis, computers and information, systems reliability and space physics.
• Facilities include fabrication and test facilities for satellite projects.
  Laboratory for Electro-Optic Sensors (LEOS) works under the overall umbrella of ISAC.
• Achievements include design and development of 26 satellites so far of various types like scientific, communication and remote sensing. IRS-P5, IRS-P6, INSAT-3 and G-SAT are current projects.

Space Applications Centre (SAC)

• Conducts space applications research and development in satellite communication and remote sensing.
• Design and build communication, remote sensing and meteorological satellite payloads and satellite communication earth station equipment.
• Facilities include mechanical fabrication, electronic fabrication, payload fabrication, MIC fabrication and environmental tests.

• Achievements include development of communication and meteorogical payloads for INSAT and camera payloads for IRS satellites.
• Currently engaged in development of INSAT-3 communication and meteorological payloads and cameras for follow-on IRS satellites.

Development and Educational Communication Unit (DECU)

• Involved in conception, definition, planning, implementation and socio-economic evaluation of space applications
• Works with users to experiment innovative space system configurations to meet specific requirements.
• Primary functions include space application experiments / demonstrations, providing communication support for application projects, production of video programmes for education and development, training of TV programme production personnel and social science research in application areas on the society-technology interface.
• Achivements include conduct of several space application demonstration, video productions for socio-economic development.
• Jhabua Development Communication Project currently under way in Madhya Pradesh.

Physical Research Laboratory (PRL)

• A national centre for research in space and allied sciences, supported mainly by Department of Space.
• Research programmes cover astronomy and astrophysics, planetary atmosphere and aeronomy, earth sciences and solar system studies and theoretical physics.
• Manages the Udaipur Solar Observatory.

ISRO Telemetry, Tracking and Command Network (ISTRAC)

• Provides mission support to near-earth satellites and launch vehicle missions.
• Has a network of ground stations at Bangalore, Lucknow, Port Blair, Sriharikota, Thiruvananthapuram and Mauritius with a multi-mission Spacecraft Control Centre at Bangalore.
• Currently supporting IRS-1B, IRS-1C, IRS-1D IRS-P3, IRS-P4 and SROSS-C2 satellites.
• Operates Local User Terminal/Mission Control Centre (LUT/MCC) under the international Satellite-Aided Search and Rescue Programme.

INSAT Master Control Facility (MCF)

• Responsible for post-launch operations on INSAT satellites including orbit manoeuvres, station keeping and on-orbit operations.
• At present supporting on-orbit operations on INSAT-1D, INSAT-2A, INSAT-2B, INSAT-2C, INSAT-2E, INSAT-3B and INSAT-2DT satellites.

National Remote Sensing Agency (NRSA)

• An autonomous institution supported by Department of Space.
• Responsible for acquisition, processing and supply of data from remote sensing satellites.
• Has satellite earth-station at Shadnagar, near Hyderabad, for reception of data from Indian remote sensing satellites, US Landsat and NOAA, French SPOT and microwave data from the European remote sensing satellite ERS.
• Undertakes remote sensing application projects in collaboration with the users.
• Incharge of generation and implementaiton of action plans under Integrated Mission for Sustainable Development in 174 districts of India.
• Also runs Indian Institute of Remote Sensing at Dehra Dun. Currently supplying data from IRS-1B, IRS-1C, IRS-1D, IRS-P3 and IRS-P4 to the users.

National Mesosphere/Stratosphere Troposphere Radar Facility (NMRF)

• A national facility set up by Department of Space at Gadanki near Tirupati, with support from the Department of Electronics, Defence Research & Development Organisation, Department of Science & Technology, Department of Electronics and the Council of Scientific & Industrial research
• Available for national and international scientists to conduct atmospheric research.