UPSC Previous Year Question | Mains GS3 | 2026
Mention salient features of ‘Mission Drishti’. Discuss the imaging techniques used in the satellite launched on 3rd May 2026. Why is it being considered the world’s first satellite of its kind? (250 words)
Answer
Introduction
Mission Drishti is presented as an Earth-observation initiative centred on advanced, multi-modal imaging for persistent monitoring of atmospheric and surface processes.
Salient Features
Its significance lies in high-resolution, near-real-time and multi-spectral observation, integration of satellite data with analytics, and applications in weather, agriculture, disaster warning, climate research and security. Such a mission links space assets with decision-support systems rather than imagery alone.
Imaging Techniques
A suitable imaging payload suite combines optical/visible and near-infrared sensors for land cover and vegetation; thermal infrared for temperature, fires and urban heat; synthetic-aperture radar for all-weather, day-night imaging; and hyperspectral channels for material and atmospheric signatures. Multi-angle or interferometric observations can estimate structure, moisture and change. Calibration, data fusion and revisit frequency determine operational value.
Why First-Of-Kind And Implications
Its claim to global first status would rest on the combination of these modalities, resolution, revisit and a novel mission objective—not on a single camera. The evidence should be verified against the official ISRO mission description before citing an absolute first. Open data for researchers, privacy safeguards and indigenous sensor capability can yield benefits in crop advisory, floods, landslides and climate adaptation.
Keywords
Earth observation; SAR; hyperspectral; thermal infrared; data fusion; disaster management; calibration.
Keywords
science and technology; emerging technology; strategic application; India
Topics: emerging technology, india, science and technology, strategic application