Hyperspectral imaging sats

 India sucessfully launched its latest earth observation satellite HysiS, the data from which can be used in wide-ranging areas agriculture, forestry, soil survey, geology, coastal zone studies, inland water studies,environmental moinitoring and pollution detection from industries.

Normal satellites captures images in visible spectral region of electromagnetic spectrum but hyperspectral satellites can take images across wide range of  electromagnetic spectrum.

Hyperspectral sensors collect information as a set of 'images'. Each images represents a narrow wavelength range of the electromagnetic spectrum also known as a spectral band.

Images corresponding small wavelength bands are combined to form a three-dimensional hyperspectral data cube for processing and analysis, where x and y represent two spatial dimension of the scene, and lamda represnts the spectal dimension.

The primary mission of the HysIS, whose mission life is five years, is to study the earth's surface in vision, near infrared and shortwave infrared regions of the electromagnetic spectrum. It is the primary satellite of the PSLV-C43 mission, which is on its 45th flight.