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RISAT-1 Indian Radar Imaging Satellite
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According to the Indian Space Research Organisation:
Radar Imaging Satellite (RISAT-1), a new class of remote sensing satellite distinct from the established IRS class, is being developed by Indian Space Research Organisation (ISRO) as its first satellite imaging mission using an active radar sensor system. RISAT-1 carries a multi-mode C-band Synthetic Aperture Radar (SAR) as the sole payload. The RISAT Mission is envisaged to augment the operational remote sensing programme in the country mainly enhancing agriculture and disaster support related applications.
RISAT-1 was launched on April 26th, 2012, into a polar sun synchronous orbit of 536 km (97.552 deg inclination) with the local time of equatorial crossing at 6:00 AM and 6:00 PM, as SAR does not need sun illumination for the target. The choice of this orbit gives advantage in terms of maximizing the power generation, with lesser complexities in solar panel tracking arrangements and power system management, besides simplifying the thermal management.
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Frequencies |
| Frequency | Bandwidth | Use | Service | Table |
| 5350 MHz | 75 MHz | RISAT-1 chirped radar | Earth Exploration-satellite | - |
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