After Lunar Mission(Chandrayaan-1),India on Monday achieved another milestone in space with the launch of spy satellite RISAT-2 from the Indian Space Research Organization (ISRO) center (Sriharikota). This will help security agencies to keep a vigil on the country’s borders.
The PSLV-C12 (Polar Satellite Launch Vehicle) lifted off from ISRO’s Satish Dhawan space Centre at 6:45 am and placed India’s first Radar Imaging Satellite RISAT 2and micro-educational satellite ANUSAT into 550 km orbit around earth about 19 minutes later.The 300 kg RISAT-2 will primarily keep an eye on the country’s borders round-the-clock and help in anti-infiltration and anti-terrorist operations.
About RISAT 2 :
RISAT 2 (Radar Imaging Satellite 2) is a satellite imaging mission of ISRO using an active SAR (Synthetic Aperture Radar) imager. The RISAT 2 payload was purchased from Israel as the development of Indias indigenous RISAT 1 was delayed. The radar system is based on the israeli TECSAR 1 satellite, while it is mounted on an indian satellite bus. RISAT 2 was launched as the sole passenger on an Indian PSLV-CA launch vehicle together with a small piggy-back satellite.
300-kg radar imaging satellite designated as “Risat-2, has all-weather capability to take images of the Earth and would also be beneficial in mapping and managing natural disasters, such as floods and landslides, besides amplifying defense surveillance capabilities of the nation. It would also help keep track of ships at seat that could pose a threat.As per specifications, RISAT2 is different from previous remote sensing satellites as it uses Synthetic Aperture Radar (SAR), equipped with many antennas to receive signals that are processed into high-resolution pictures
The Indian security forces were anticipating the launch of this much-needed satellite, specially after the 26/11 Mumbai attacks, as India’s existing satellites get non-operational at night and in the monsoon season.
About ANUSAT :
The 40 kg micro satellite ANUSAT, the co-passenger of RISAT 2, has been built by Anna University, to demonstrate the technologies related to message store and forward operations. ANUSAT, the first satellite built by an Indian University, is a ‘store-and-forward’ communication satellite that will help transfer confidential academic material and also monitor drought and wasteland, urban planning and other studies. RISAT2 has a lifespan of three years and ANUSAT has one year life span.
The 44 m tall PSLV or Polar Satellite Launch Vehiclehas a lift-off mass of 295 tonne. It is a four-stage launch vehicle with the first and the third stages as well as the six strap-ons surrounding the first stage using HTPB based solid propellant. PSLV’s first stage is one of the largest solid propellant boosters in the world. Its second and fourth stages use liquid propellants. PSLV-C12 will be launched without the six strapons in its ‘core alone’ configuration. PSLV-C12 weighs about 230 tonnes at lift off.
This is the 15th flight of ISRO’s workhorse PSLV,during 1993-2008 period, PSLV had fourteen launches of which thirteen were consecutively successful. PSLV has repeatedly proved its reliability and versatility by launching 30 spacecraft — 14 for India and 16 for foreign countries .It may be recalled that during its previous mission on October 22, 2008, PSLV had successfully launched Chandrayaan-1 spacecraft, which is now exploring the Moon from lunar orbit.