ISRO successfully demonstrates satellite technology to study ocean and soil parameters.

ISRO’s GNSS-R Technology  What is GNSS-R?  Developed by SAC-ISRO, India’s first spaceborne precision receiver.    New remote sensing method using reflected GNSS signals.    Collects data on soil moisture, surface inundation, ocean surface wind & waves.    Carried by: EOS-08 satellite (launched Aug 16, 2024)    Data Processing: Raw data processed at NRSC, Shadnagar (Hyderabad)    GNSS/RNSS signals (GPS, NavIC) reflected from Earth’s surface are analyzed.    GNSS-R Functions: Collects ground-reflected GNSS signals & measures their strength.

Provides scientific information on: Soil moisture Surface inundation Ocean surface wind & waves Resolution: Oceans: 15 km x 15 km    Land: Better than 1 km x 1 km    GNSS-R Outputs: Delay-Doppler Maps (DDMs) used to derive scientific data like NBRCS.  Microsoft tools developed by SAC-ISRO used for data processing. GNSS-R Achievements: Collected high-resolution land data over the Sahara Desert (better than CYGNSS).    Generated flood mask for Amazon rainforest using SpecUltraFlaction technique. Collected first ocean data over the Pacific Ocean for wind speed & wave direction.