Chennai: A wholly Indian-built spy-surveillance satellite - the Radar Imaging Satellite or Risat-1- that can see through clouds and fog and has very high- resolution imaging is slated for launch in April, a senior official of the Indian space agency has said.
An official of the Indian Space Research Organisation (ISRO) said thorough tests were being done on the Risat-1. "The Risat-1 is put to thermal vacuum test (a test to check the satellite's functioning in space environment). It is a complex microwave satellite being built for the first time in India. The satellite is expected to be launched in April," the senior official told IANS, not wishing to be named because of the organisational rules.
In earlier satellites, one major component, the synthetic aperture radar (SAR) was imported, but in Risat-1 that has also been developed in India.
He said Risat-1 is the first such satellite being built by India and is a bit complex compared to other remote sensing/earth observation satellites built and sent up earlier.
According to ISRO officials, Risat-1 at 1,850 kg is the heaviest microwave satellite to be built by India.
The satellite would be used for disaster prediction and agriculture forestry, and the high resolution pictures and microwave imaging could also be used for defence purposes.
Risat-1 will have all weather, day and night imaging capability.
The satellite's synthetic aperture radar can acquire data at C-band.