What is ISRO's RISAT satellite series?

India had in April 2009 launched RISAT-2, the first of the series to reach orbit. It was bought from Israel for USD 110 million largely for surveillance purposes. This Satellite enhanced ISRO's capability for Disaster Management applications. In 2012, ISRO then launched what was India's first indigenous all-weather radar imaging satellite, known as RISAT-1. With a 160 x 4 Mbit/s data handling system and 50 Newton-meter-second reaction wheels, the satellite provides all-weather surveillance using synthetic aperture radars (SAR). Till its launch, India depended on images from a Canadian satellite as existing domestic remote sensing spacecraft cannot take pictures of the earth during cloud cover. DailyhuntDisclaimer: This story is auto-aggregated by a computer program and has not been created or edited by Dailyhunt. Publisher: The Indian Expresshttp://www.subzerotyler.com/UserProfile/tabid/61/userId/117019/Default.aspx