• Simulation of at-sensor radiance over land for proposed thermal channels of Imager payload onboard INSAT-3D satellite using MODTRAN model

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      https://www.ias.ac.in/article/fulltext/jess/120/01/0019-0025

    • Keywords

       

      Earth observation; imager; INSAT-3D; land surface; MODTRAN; simulation; thermal infrared.

    • Abstract

       

      INSAT-3D is the new generation Indian satellite designed for improved Earth observations through two payloads – Imager and Sounder. Study was conducted with an aim of simulating satellite level signal over land in the infrared channels of the Imager payload using a radiative transfer model MODTRAN. Satellite level at-sensor radiance corresponding to all four infrared channels of INSAT-3D Imager payload is obtained using MODTRAN and sensitivity of at-sensor radiance was inferred as a function of input parameters namely, surface temperature, emissivity, view angle and atmospheric water vapour, which is helpful in understanding the signal simulation scheme needed for retrieving a very critical parameter namely, land surface temperature.

    • Author Affiliations

       

      M R Pandya1 D B Shah2 H J Trivedi2 S Panigrahy1

      1. Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India.
      2. N. V. Patel College of Pure and Applied Sciences, Vallabh Vidyanagar, India.
    • Dates

       
  • Journal of Earth System Science | News

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