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INSAT-3A

INSAT3A, the third satellite in INSAT3 series is a multipurpose satellite for providing telecommunications, television broadcasting,

meteorological and search and rescue services. It carries twenty four transponders twelve operating in the normal C band

frequency, six in extended C band and six in Kuband. INSAT3A also carries a Kuband beacon.

For Meteorological observation, INSAT3A carries a three channel Very High Resolution Radiometer (VHRR). In addition, INSAT3A

carries a Charge Coupled Device (CCD) camera which operates in the visible and short wave infrared bands providing a spatial

resolution of 1 km.

A Data Relay Transponder (DRT) operat ing in UHF band is incorporated for real t ime hy dro meteoro logical data c ollection from

unattended located on land and river basins. The data is then relayed in extended Cband to a central location.

INSAT3A also carries another transponder for Satellite Aided Search and rescue (SA&R) as part of Indias contribution to the

international Satellite Aided Search Programme.

Mission Telecommunication, broadcasting and Meteorology

Spacecraft

Mass

2,950 kg (Mass at Liftoff)

1,348 kg (Dry mass)

Onboard

power

3,100 W

Stabilization 3 axis body stabilised in orbit using momentum and reaction wheels, solar flaps, magnetic torquers and eight 10 N

and eight 22 N reaction control thrusters

Propulsion 440 N Liquid Apogee Motor with MON-3 (Mixed Oxides of Nitrogen) and MMH (Mono Methyl Hydrazine) for orbit

raising

Payload Communication payload

- 12 C band transponders,

- 6 upper extended C band transponders

- 6 Ku band transponders

- 1 Satellite Aided Search & Rescue transponders

Meteorological payload

- Very High Resolution Radiometer (VHRR) with 2 km resolution in visible band and 8 km resolution in infrared and

water vapour band

- Charged Coupled Device (CCD) camera operating in visible, near infrared and shortwave infrared band with 1 kmresolution.

- Data Relay Transponders (DRT)

Launch date April 10, 2003

Launch site French Guyana

Launch

vehicle

Ariane5-V160

Orbit Geostationary (93.5 E longitude)

Mission l ife 12 Years

Launch Mass

2,950 Kg

Launch Date

Thursday, April 10, 2003

Mission Life

12 Years

Power

3,100 W

Ariane5-V160

Type of Satell ite

Communication

Manufacturer

ISRO

Owner

ISRO

Application

Communication

Orbit Type

GSO

English

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