HySIS

HySIS (Hyperspectral Imaging Satellite) is an operational Indian Earth-observation mission developed and operated by ISRO, launched on 29 November 2018 aboard PSLV-C43. The satellite flies in a sun-synchronous orbit at approximately 630 km altitude with a 10:34 local solar time descending equator crossing, providing a 30 km swath and a 90-day revisit cycle.^[1]

The primary payload is a VNIR/SWIR pushbroom imaging spectrometer that acquires continuous spectral data for hyperspectral classification, spectral library matching, and vegetation index mapping. Application domains include crop-type identification, crop stress detection, forest structure assessment, geological and mineral mapping, land cover change monitoring, and coastal water quality assessment. Instrument operations commenced in February 2019 according to WMO OSCAR records.^[2][3]