How to plot H/alpha plane

Microwave Toolbox
1

Hi every one,

I am using Sentinel-1A SLC data for polarimetric classification. I got classified results by using Dual Wishart classification.
And now I want to lot H/alpha plane.

Could you guys please guide me how to plot h/alpha plane in SNAP? I have tried to do polarimetric decomposition but this step requires the full polarimetric product.

Many thanks!

snap
snap.png1920Ă—1080 348 KB

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2

run the H/alpha dual-pol decomposition

grafik

Then you select the image and open the H/alpha plane plot grafik and click “Refresh View” grafik

grafik
grafik1660Ă—876 869 KB

Some remarks on the use of H/alpha based on dual-pol data:

3

Thank you very much for your help! I am following your instruction.

4

Dear Andreas,

I attempt to use pre-processed Sentinel-1 IW SLC dataset (VV and VH bands) to conduct Polarimetric Matrix Generation and Polarimetric Decomposition. However, I got error massage says: “Input should be a polarimetric product”. Also, the “Refresh View” button is grayed out, could you please advise on this issue?

Please see my screenshot below:

image
image.jpg1624Ă—1277 993 KB

Thank you very much in advance!

Warm regards,
Izzy

5

“polarimetric” in this case means that all four polarization channels are required: HH+HV+VH+VV
But Sentinel-1 is dual-pol only (VV+VH). There is a dual-pol decomposition in the dropdown menu, but some decompostitions or polarimetric operators will not work with Sentinel-1 data.

Please have a look at this post, where we discussed what is possible with Sentinel-1 and to what extent it makes sense: H-Alpha Plane Problems

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