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- Indias First Optical & Radar Satellite Drishti Launched | PM Modi Congratulates
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Indian startup Galaxy on Sunday launched its first satellite ‘Drishti’ from American company SpaceX’s Falcon 9 rocket. With a weight of 190 kg, Drishti is India’s largest private satellite.
Drishti satellite can take photos from both optical and radar (SAR) simultaneously. Till now the world’s satellites either took multi-spectral/hyper-spectral (optical) images or used SAR technology.
Optical images are clear and easy to understand. SAR i.e. Synthetic Aperture Radar technology can do imaging even in clouds, rain or at night. Galaxy has named the technology Opto-SAR.
Vision will help in works like defence, farming, disaster management, maritime surveillance and infrastructure planning. This satellite will support 29 earth observation satellites of ISRO.
PM Modi also congratulated Galaxy by posting on social media.
There will be satellite imaging in every season from sight
According to the company’s founder Suyash Singh, earlier data from different satellites had to be combined to get better information. Due to this, the photographs taken at different times and angles did not match. ‘Drishti’ will give an accurate picture of the same place at the same time.
He said that if optical images are not available in bad weather, the company can use AI to convert SAR data into optical-like images. This will make imaging possible in all weather and at all times.
Drishti’s technology is special for India
This technology was not developed earlier because most satellite companies are in western countries, where the weather is clear. The problem of clouds is more prevalent in India, hence this solution has been prepared.
The biggest challenge in making this satellite was to coordinate between optical and SAR technology. Both sensors view the earth from different angles. Therefore, the company developed such technology so that both can take images of the same location at the same time.
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