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I have a PlanetScope Ortho Scene Product (3B) which includes an AnalyticMS.tif and AnalyticMS_SR.tif files. Based on what I have read so far, the AnalyticMS_SR.tif file is scaled surface reflectance in Digital Number. How do I convert the DN to surface reflectance value?

I have read that for AnalyticMS.tif, I can convert the DNs into TOA reflectance or radiance by multiplying them with the given reflectance coefficient or radiometric scale factor. Is there something like that for the the Surface Reflectance product?

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The SR product is provided as a 16-bit GeoTIFF image with reflectance values scaled by 10,000.

There is also a tutorial tutorial to convert MS radiance to reflectance.

  • +1 You are correct. From the documentation that your provided, Planet states the following: "The four coefficients a,b,c,d are calculated and provided with every analytic image that Planet provides and can be used as simple scaling factors to convert from radiance to reflectance." – Aaron Sep 26 at 2:00

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