Calibration Services

Overview

National Remote Sensing Center(NRSC)/ISRO has established and operationalised an unique Cal-Val facility in IMGEOS Complex at Shadnagar, Hyderabad to enable the calibration needs of Optical and Microwave sensors.
 
It has built the technical competence to collaborate for the Calibration of foreign remote sensing sensors.
 
The facility is designed to perform the radiometric calibration of high resolution multispectral data (better than 10m) at 5 different radiometric levels from 7% to 50% reflectance levels simultaneously and mid resolution data ( better than 25m) at two different levels 7% and 30% in the VNIR & SWIR spectral bands. The five targets are developed using natural materials of stone and soil and they well maintained for the spatial/temporal stability during the favourable period of October to May.
 
NRSC has also established a microwave calibration site consisting of corner reflectors in a 200m x 80m area to conduct SAR calibration exercises for present and future Space borne and Airborne SAR missions to support calibration activities during the commissioning and operational phase . Ample care has been taken to maintain calibration site in vegetation free condition with low background level which is an important factor for absolute radiometric calibration.