Bangalore, India: After the successful Chandrayaan-I moon mission, Indian Space Research Organisation is now getting ready for a twin launch – a “breakthrough” Radar Imaging Satellite (RISAT) and ANUSAT, a 35-kg micro-satellite designed by Chennai-based Anna University. Bangalore-headquartered ISRO is targeting a March last week date for launching them on board the indigenously built Polar Satellite Launch Vehicle from the Sriharikota spaceport.
Indian space scientists see the 1,780-kg RISAT as a major milestone for the country as far as remote sensing satellites are concerned. RISAT mission would have a C-band Synthetic Aperture Radar (SAR) payload, operating in a multi-polarisation and multi-resolution mode.
SAR, being an active sensor, operating in the microwave range of electromagnetic spectrum, provides the target parameters such as dielectric constant, roughness, and geometry, and has the unique capability for day-night imaging, and imaging in all weather conditions including fog and haze, and also provide information on soil moisture.
RISAT is capable of taking pictures during night as well and even in cloud-covered conditions, an expertise Indian remote sensing satellites did not have previously.
ANUSAT mission’s main objective is to involve universities in building micro satellites as a means to promote and encourage intra-disciplinary technologies with ISRO’s help. ANUSAT carries a digital store and forward payload for amateur communication.