🕸️BPSC WEB🕸️

PRELIMS:- Traditional satellites • Use either Optical OR SAR • Optical —> fails in cloud/dark • SAR —> works always but less clear images Drishti (New) • Optical + SAR together (same satellite) • Same place + same time imaging (synchronised) Working of Drishti • Optical —> sunlight-based image • SAR —> microwave-based (penetrates clouds) • Output —> combined (fused) image Benefit of Drishti • All-weather + day-night observation • No time gap error • More accurate & reliable data • Will provide continuous, accurate Earth observation (no weather limitation) • Use —> disaster, defence, agriculture MAINS:- • India’s private space ecosystem led by IN-SPACe (regulation) and NSIL (commercialisation) is enabling startups like GalaxEye to develop advanced technologies such as Opto-SAR satellites. • This complements ISRO by boosting innovation, reducing dependency, and strengthening India’s strategic and geospatial capabilities.