Context: Bengaluru-based space start-up GalaxEye announced that communication with Mission Drishti—the world’s first OptoSAR satellite and India’s largest privately built Earth observation satellite—has been lost.
About Mission Drishti: India’s First OptoSAR Earth Observation Satellite
What It Is?
- Mission Drishti is a next-generation, high-performance Earth observation satellite designed and engineered entirely within India’s private sector. Weighing 190 kilograms, it represents a major technological milestone as the first operational spacecraft in global history to fuse optical and radar imaging sensors onto a single, compact satellite chassis.
Launched By:
- The Manufacturer: Developed by GalaxEye, a deep-tech space start-up incubated out of Bengaluru.
- Launch Vehicle & Site: Launched into orbit on May 3, 2026, aboard a SpaceX Falcon 9 rocket from the Vandenberg Space Force Base in California, USA.
Aim of the Mission:
- To build a sovereign, non-blind satellite network capable of monitoring high-altitude borders and maritime zones without interruptions from weather or nightfall.
- To plug critical intelligence gaps for the Indian Armed Forces along borders with China and Pakistan, ending reliance on delayed foreign commercial imagery during strategic standoffs.
Key Technical Features of the OptoSAR Payload:
- The OptoSAR Sensor Fusion: OptoSAR combines Electro-Optical (EO) cameras and Synthetic Aperture Radar (SAR) on a single satellite, enabling simultaneous collection of optical and radar imagery.
- Overcoming Natural Obstacles: EO cameras capture clear visual images but fail in clouds or darkness, while SAR works in all weather and at night. OptoSAR merges both for reliable, all-weather imaging.
- Co-registered Data Streams: OptoSAR records optical and radar data from the same location and time, eliminating alignment errors and delays common with separate satellites.
- Global Imagery Distribution Model: Through NewSpace India Limited (NSIL), Mission Drishti will commercially distribute its hybrid satellite imagery to domestic and international users.
Significance:
- Mission Drishti showcases India’s private space capabilities by demonstrating that domestic startups can independently build advanced, globally competitive satellite technologies.
- Its all-weather surveillance capability strengthens border monitoring by detecting activities even through clouds, heavy rain, fog, or darkness.
- OptoSAR demonstrates the commercial value of combining optical and radar sensors, enabling faster, cost-effective services for agriculture, shipping, and defence.
