Landsat 5/8 LVL1 Products Calibration with SNAP?

#1

Hi to all.
I search at forum but i don’t find anything. Can i do radiometric calibration (DN-> Radiance->Reflectance) for Landsat 5 and 8 with SNAP?

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#2

Or could I found LVL2 products for those satellites (that are already geometric, radiometric and atmospheric calibrated) anywhere (expect USGS)?

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#3

In SNAP you can process L1 Landsat-8 data to L2 water reflectance and related WQ products using the C2RCC processor.

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#4

There is an option to read the data directly as reflectance.
Please see my post here:

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#5

This works perfect for L8 data… but for L5 i see that SNAP cant read the .tar files ( this is the product i work on it LT051810331993052701T1-SC20181018094612.tar).
I tried to uncompressed but SNAP cant read the MTL file.
I tried to import (FIle->Import->Optical Sensor-> Landsat->Landsat TM 5(FAST)) but you can import only .dat or .zip files.
Any idea for how i can open L5 data (with out radiometric calibration)? Or how i can do radiometric calibration with SNAP at the L5 data?

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#6

The file you are trying to open is a surface reflectance product (level2)?

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#7

The L5 products that I have, are already LVL2 products. Sorry for that!

But how i could load all the bands as BEAM_DIMAP format?

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#8

It will be available soon a specific reader for Landsat level 2 products. Meanwhile, you could open the TIF images independently, apply the scale values using bandmath and finally merge all the bands in a single product.

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#9

Can we know the status of this functionality as I’m coming across the same issue?
For the time being, I’m just creating a color composite with QGIS to visualize the RGB image.

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#10

It will be included in the coming s3tbx module update (probably next week).

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