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RISAT-1 to be launched anytime from March 15

Soumya_india

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RISAT-1 to be launched anytime from March 15
Bangalore, Jan 18 (PTI)

Indigenously developed remote sensing satellite RISAT-1, which can take images of the Earth in all weather conditions, would be launched by space agency ISRO anytime from March 15.

The 1850 kg RISAT-1, earlier slated for launch last year onboard PSLV-C19, would be a "major milestone" for the country and a boon for regions perennially under cloud cover.

"The launch of microwave remote sensing RISAT-1 is slated anytime from March 15," ISRO Chairman K Radhakrishnan told reporters on the sidelines of an event here organised by the Indian Institute of Science.

Besides use in the agriculture sector, the satellite's all weather capability to take images of the Earth could also be used to keep an eye on the country's borders round-the-clock and to help in anti-terrorist and anti-infiltration operations, he said.

The ground testing for GSLV-Mk III, which can lift four tonne spacecraft, was on and its launch would be finalised by May or June this year, Radhakrishnan said.

On the other future launches, he said communication satellites GSAT-10 and GSAT-7 were scheduled for launch this year.

GSAT-14 onboard indigenously developed Geosynchronous Satellite Launch Vehicle (GSLV-D5) was also scheduled for launch this year, the ISRO chief said, adding the agency planned for the launch of first regional navigation satellite system in 2012.

Karnataka Knowledge Commission Chairman and renowned space scientist Dr K Kasturirangan, in his speech at the event, stressed the need for state governments to take the geographic information (GI) system to district and panchayat levels to improve the process of decision-making.

RISAT-1 to be launched anytime from March 15
 
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RISAT-1: A Fully Polarimetric C-band SAR Mission of ISRO


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RISAT (Radar Imaging Satellite)-1 is a series of Indian radar imaging reconnaissance satellites being built by ISRO to provide all-weather surveillance using Synthetic Aperture Radars (SAR). Radar imaging satellite (RISAT-1) is scheduled to be launched in mid-2011 for enhancing the scope of remote sensing applications and services using microwave data. The synthetic aperture radar onboard RISAT will have ability to acquire data at C-band in different mode of polarization, incidence angle and resolution. The RISAT SAR will operate at C-band (5.35 GHz) at various beam modes having a number of combinations of linear polarization modes as well as circular polarization modes, incidence angle, swath of 200-600 km and resolution varying between 3 to 50 m from a nominal altitude of 536 km. The System will have capability of left as well as right looking. It will operate in four basic modes, (i) Fine Resolution Strip map Mode (FRS) will provide nominal single look 3 m – 8 m resolution image over 30 km swath in either single, dual or quad polarization, (ii) Medium Resolution ScanSAR Mode (MRS) will provide nominal single look 25 m resolution image over swath of 120 km, (iii) Coarse Resolution ScanSAR Mode (CRS) will provide nominal two look 50 m resolution image over swath of 240 km and (iv) High Resolution Spotlight Mode (HRS) will have a spot of 10 km (Azimuth) and 10 km (ground range swath) for either single or dual polarization.



RISAT-1: A Fully Polarimetric C-band SAR Mission of ISRO – GRSS | IEEE | Geoscience & Remote Sensing Society
 
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