Mission typeRadar imaging satellite
Mission duration5 years (planned)
Spacecraft properties
ManufacturerSpace Applications Centre
Launch mass1,858 kilograms (4,096 lb)
Power2200 w
Start of mission
Launch dateMay-June 2021
Launch siteSatish Dhawan Space Centre
Orbital parameters
Reference systemGeocentric
Inclination97.844 deg
Period96.5 minutes

Radar Imaging Satellite 1A, or RISAT-1A, is a planned remote sensing satellite that is similar in configuration to RISAT-1. The satellite is being developed by Indian Space Research Organisation (ISRO). RISAT-1A will be 6th in series of RISAT satellites. It will be a land based mission with primary application in terrain mapping and analysis of land, ocean and water surface for soil moisture.[1]


The satellite will carry Synthetic Aperture Radar which will operate at 5.35 GHz in C band. Synthetic Aperture Radar can be used for earth observation irrespective of the light and weather conditions of the area being imaged.[2]

Payload metrics are defined by the following parameters and areas of study

Category Parameters
Land Albedo and reflectance
Soil moisture
Multi-purpose imagery
Ocean Ocean topography/currents
Snow & Ice Ice sheet topography
Snow cover, edge and depth
Sea ice cover, edge and thickness


RISAT-1A will be launched on the Polar Satellite Launch Vehicle (PSLV) and will have a liftoff mass of 1,858 kilograms (4,096 lb). RISAT-1A is planned to be launch on May-June 2021.


RISAT-1A is planned to be launched in May-June 2021.

See also


  1. ^ "CEOS Instrument: Synthetic Aperature Radiometer (RISAT)". Retrieved February 9, 2016.
  2. ^ Raj, N. Gopal (25 April 2012). "RISAT-1's radar can see through clouds and work in darkness". Chennai, India: The Hindu.