About Sentinel-1 SLC Subset

Microwave Toolbox
#21

you means if a small area in a burst,I can subset it .if my study area across several burst,it must be TOP Debursted?

#22

thank you very much

#23

no, you will always have to split and deburst. But if your area is even smaller (don’t make it too small for unwrapping), you can create a subset after debursting

#24

split?my doucument dose not coontain this step,can I do as follow:
co-regestration->deburst->subset->interferogram->other steps

#25

we are moving in circles…

I refer to this document: http://step.esa.int/docs/tutorials/S1TBX%20TOPSAR%20Interferometry%20with%20Sentinel-1%20Tutorial.pdf

TOPS coregistration (includes both split and orbit file application) > interferogram processing > debursting > subset (if you still need) > other steps

#26

fianal question,when I did multilook as this pictures:

image
image.png696×638 75.6 KB

I choose two band(i and q);
and do the next step ,finally get the right phase fig,
but when i uwrapping the phase ,export the snaphu ,an error occurs:
image
i found that my product dose not contain coherence band,How to do next

#27

I skipped multilooking - it is not mandatory. But it should be possible after debursting.

When you compute the inteferogam, make sure that computation of coherence is checked.

#28

I compute the coherence in inferogram step,after multilook,the coherence band was missing,is that because I did not choose the coherece band in multilook

#29

yes, you need to manually select all bands you need in the multi-looking

#30

my snap cannot choose the burst，why？
image

#31

click on the triangles and drag them towards the middle to change the number of bursts

#32

thanks a lot，your help is really good

#33

@ABraun could I skip subset step in preprocessing?

#34

yes, this is not mandatory