Launch Date:25.02.2013


  The Satellite with ARGOS and ALTIKA (SARAL) is a joint Indo-French satellite mission for oceanographic studies. It is a mini satellite designed using IMS-2 Bus. It carried two payloads of CNES, France namely ALTIKA and ARGOS. ALTIKA consists of an altimeter for ocean topography and ARGOS is a data collection platform to collect weather information from ocean buoys for ocean currents, fish migration, weather predictions, etc. The satellite also carried Solid State C-band Transponder (SCBT) of ISRO for ground RADAR calibration. It is a continuation of such support provided by C-Band Transponders flown in the earlier IRS-P3 and IRS-P5 missions.


Mission Operational Remote Sensing
Orbit 799.8 km Polar Sun Synchronous
Orbit Inclination 98.55o
Lift-off Mass 407 kg
Orbit Period 100.59 minutes
Local Time of Equator crossing 6.00 PM
Repetitivity 35 days

Instruments onboard ALTIKA includes Ka Band Altimeter, Dual Frequency Radiometer, LRA (Laser Retro-Reflector Array) and DORIS (Doppler Orbitography and Radio Positioning integrated by satellite):

Altimeter: 35.75 GHz, 8 km swath

Radiometer: 27 GHz (Ka-band) and 23.8 GHz (K-band)

ARGOS: Data Collection Platform

SCBT: C-Band Transponder for calibration of Ground Radars at SDSC, SHAR.

Attitude and Orbit Control 3-axis stabilized based on inputs from 4 PI sun sensors, magnetometer, star sensors and miniaturized gyro based Inertial Reference Unit
Power Solar Array generating 700 W and 21AH single Li Ion battery
Launch date February 25, 2013
Launch site SDSC SHAR Centre, Sriharikota, India
Launch vehicle PSLV – C20
Mission life Five Years (Nominal)
Orbital life In Service