IsRO Developing Hyperspectral Imaging Earth Observation Satellite (Download PDF)

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The Indian Space Research Organisation (ISRO) is launching a full-fledged Earth observation (EO) Hyperspectral Imaging Satellite (HySIS) . ISRO՚s HySIS satellite can observe 55 spectral or colour bands from 630 km above ground.

Hyperspectral Imaging Technology

What is HysIs?

  • A typical EO satellite can only observer or collect data in a few bands of frequency. On the other hand, hyperspectral imaging, or imaging spectroscopy, combines the power of digital imaging and spectroscopy. For each pixel, a hyperspectral camera acquires the light intensity (radiance) for a large number (typically a few tens to several hundred) of contiguous spectral bands. Every pixel thus contains a continuous spectrum (in radiance or reflectance) allowing characterization of objects with great precision.
  • The HySIS satellite has “optical imaging detector array” indigenously developed by ISRO- allowing ISRO to become one of the few countries with hyperspectral imaging capability from earth orbit. It has a resolution of 1000 × 66 pixels
  • ISRO՚s HySIS satellite can observe 55 spectral or colour bands from 630 km above ground.
  • Applications include monitoring the environment, crops, oil and minerals discovery, military surveillance.
  • Optical imaging detector array chip designed by the payloads development centre, Space Applications Centre, Ahmedabad and manufactured at ISRO՚s electronics arm, the Semi-Conductor Laboratory, Chandigarh.

Background

  • ISRO tried out hyspex imaging technology in an 83-kg IMS-1 experimental satellite in May 2008.
  • Hyperspectral camera on Chandrayaan-1 was used to map lunar mineral resources.

- Published/Last Modified on: September 3, 2017

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