Sigma naught from topographic correction

After performing terrain flattening and topographic correction of the GRD product in Step latest version, I obained only gamma naught. Can not I get sigma naught?

I also have this question. It’s possible to calculate sigma0 from gamma0, but I am running into a problem:

Were you ever successful in getting sigma0?

@polar, not yet!
I’m thinking to use gamma0 after terrain flattening and terrain correction.
I thought that terrain flattening procedure gives gamma0 only.

@ChengTan – TF does only give gamma0, but gamma0 is convertible to sigma0 (e.g., see slide 39: and I have done this now successfully in the link in my previous reply.

However, I am not very experienced with this, so I can’t say this conversion is appropriate.

More info can be found here:
Small, D. (2011), Flattening Gamma: Radiometric Terrain Correction for SAR Imagery, IEEE Transactions on Geoscience and Remote Sensing, 49(8), 3081–3093, doi:10.1109/TGRS.2011.2120616.

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Thanks @polar for this information!