Explanation:

GISAT-1

• GISAT-1 is short for Geo-Imaging Satellite  and it is an Earth observation  Satellite.
• ISRO is preparing to launch the satellite in the first week of March.
• It will constantly look over the Indian subcontinent from a perch 36,000 km above, adding a new edge to national security, apart from routine uses of earth imaging.
• Once GISAT-1 stabilises in its orbit and starts working over the next few weeks, it will, according to ISRO, provide “quick monitoring of natural disasters, episodic events and any short-term events.
• Its multi-spectral and hyperspectral payloads would help to get “spectral signatures for agriculture, forestry, mineralogy, disaster warning, cloud properties, snow and glaciers and oceanography.”