AHMEDABAD, October 16 — The Space Applications Centre (SAC) of the Indian Space Research Organisation (ISRO) in Ahmedabad on Friday announced the successful airborne validation of an indigenous dual-frequency (L-band and S-band) Synthetic Aperture Radar (SAR) engineered for extreme all-weather disaster surveillance.
Mounted aboard dedicated aerial survey aircraft operated in coordination with the National Disaster Management Authority (NDMA), the polarimetric radar penetrates dense monsoonal clouds, smoke cover, and nighttime darkness to deliver sub-meter (0.5m) spatial resolution imagery, generating real-time digital elevation maps of breach points along swollen river basins.
ISRO telemetry engineers highlighted that the airborne SAR platform also delivers critical calibration and validation ground-truth benchmarks for the joint NASA-ISRO Synthetic Aperture Radar (NISAR) earth-observation satellite mission, while augmenting agricultural yield prediction models.
The operational physics of Synthetic Aperture Radar (active microwave sensing, speckle filtering, Doppler shift resolution), the comparative penetration depths of L-band versus C-band and X-band frequencies, the institutional framework of the NDMA (established under the Disaster Management Act 2005), and Sendai Framework targets are core themes in UPSC Civil Services (GS-III: Science & Technology and Disaster Management).