One of the most critical technologies needed in every stage from assessment to recovery is remote sensing--gathering data about an object without physical contact. Here is where the Indian Remote Sensing (IRS) satellite programme comes in.
IRS' nine satellites make up the largest remote sensing constellation for civilian use anywhere in the world. Following the Mumbai terror attacks of November 2008, India launched the Risat-2, a spy satellite with synthetic aperture radar (SAR) that allowed for very fine spatial resolution in images, in April 2009. It can see through thick cloud cover, rain, snow, fog or even camouflage-like foliage. This allows all-weather monitoring of movement across India's borders with Pakistan, Bangladesh and China.