analytic_dn calibration in reflectance

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Andrea Marchesi

• May 27, 2020 13:37

Hello,

as mentioned in this document (below) we tried to calculate the TOAR with this formula but values in output are really far to be reflectance between 0 to 1 (0.0009 - 0.009)

Do you know where i 'm wrong? 

I also tried to get the coefficients from geotiff but i.m not able to find it . do you know how to get out this informations?

thank you for any help 

 

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• Official comment

  

  Pooja Pandey

  • June 01, 2020 10:25

  Hi Andrea,

   

  Thanks for posting in Planet Community.

  In addition to the above information, do you have the scene ID you tried this on?

   

  Best Regard,s

  Pooja

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  Andrea Marchesi

  • May 29, 2020 11:54

  More details on input data:

  the image is SkySatCollect and the asset type is  assets.ortho_analytic_dn.

   

   

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  Andrea Marchesi

  • June 03, 2020 07:11

  Hi Pooja,

  Yes , I've more than one .

  is the scene id this info I can get from the json file?

  item-types/SkySatCollect/items/20200229_093318_ssc4_u0002/assets

  let me know if you need more info.

  Best Regards

   

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  Andrea Marchesi

  • June 11, 2020 15:01

  Hello Support,

  if you need info/clarifications can you contact me please?

   

  thank you

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