Topographic normalization in polarimetry

Microwave Toolbox
1

Hi everyone

Considering that gamma naught is a type of calibration used for backscattered intensity, ¿anyone know a method to apply topographic normalization to Sentinel-1 polarimetric products?.

The problem is this; ascending and descending orbits give too different results when the objets are specular backscatters, such as coastal cliffs looking towards the sensor.

Any ideas or suggestions are welcome!!

5 - copia
5 - copia1920×1041 406 KB

2

To extend the discussion a bit, I add a polarimetric (or pseudo-polarimetric) decomposition.

Descomp
Descomp1920×1040 323 KB

3

You can try Radiometric Terrain Flattening to reduce effects caused by slopes. Please report back how it goes.

https://step.esa.int/main/wp-content/help/?version=12.0.0&helpid=TerrainFlatteningOp

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4

Thank you so much @mengdahl !!

I did’nt know that the Terrain Flattening tool could be applied to SLC products. I’m going to try, but apparently it doesn’t recognize the C2 matrix format.

Procesamiento
Procesamiento1920×1040 160 KB

5

Supported input-products are listed in the Help.

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