Context:
Indian startup GalaxEye has launched its ‘Drishti satellite’ aboard a SpaceX rocket, marking a major milestone in private space innovation. The satellite can capture both optical and radar images simultaneously, enhancing Earth observation capabilities.
- GalaxEye is an Indian space-tech startup focused on advanced Earth Observation (EO) technologies and satellite imaging solutions.
- ‘Drishti’ is designed to provide synchronous optical and Synthetic Aperture Radar (SAR) imaging, a first-of-its-kind capability globally.
- EO satellites are crucial for agriculture monitoring, disaster management, climate studies, urban planning, and defence surveillance.
- Optical imaging uses visible spectrum light to generate high-resolution images but is limited by cloud cover and night-time conditions.
- SAR (Synthetic Aperture Radar) uses microwave signals, enabling all-weather, day-night imaging, and works on the principle of microwave backscatter.
- The integration of optical with SAR payloads allows continuous, reliable, and high-frequency data capture of the same geographical location.
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