Launch Date
Radar Satellite-1 (RISAT-1) is a state of the art Microwave Remote Sensing Satellite carrying a Synthetic Aperture Radar (SAR) Payload operating in C-band (5.35 GHz), which enables imaging of the surface features during both day and night under all weather conditions.


Active Microwave Remote Sensing provides cloud penetration and day-night imaging capability. These unique characteristics of C-band (5.35GHz) Synthetic Aperture Radar enable applications in agriculture, particularly paddy monitoring in kharif season and management of natural disasters like flood and cyclone.

Lift-off Mass 1858 kg
Orbit Circular Polar Sun Synchronous
Orbit Altitude 536 km
Orbit Inclination 97.552o
Orbit Period 95.49 min
Number of Orbits per day 14
Local Time of Equator Crossing 6:00 am / 6:00 pm
Power Solar Array generating 2200 W and one 70 AH Ni-H2 battery
Repetivity 25 days
Attitude and Orbit Control 3-axis body stabilised using Reaction Wheels, Magnetic Torquers and Hydrazine Thrusters
Nominal Mission Life 5 years
Launch date April 26, 2012
Launch site SDSC SHAR Centre, Sriharikota, India
Launch vehicle PSLV- C19

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