After preprocessing the data, black colour strip of border is coming at the right side edge of the scene.
I followed the following procedure
Is it ok to have that trip or it is wrong
Have you tried to apply GRD border noise removal after the back areas appear?
I have not… can I do it in pre- processed data??? Or repeat the process. SNAP IS REALLY very slow in processing when consider whole scene… Ufffffff
if SNAP is slow, have you considered importing a subset only? It also makes a difference where the data is stored.
You can apply border noise removal at any later processing step, but it is most effective directly after the noise is introduced.
Thank u so much…will do…in Subset it is fast…
Need some more idea. Will the black strip hamper in analysis??? Why this black strip comes?
it will not affect your data analysis.
Please have a look at the documentation of the Border Noise Removal
Thank u… How to delete the vector pins??? I am trying to delete the pins I have created.
you can do that in the Pin Manager
Thank u so much…
what are the steps you applied before this?
Orbit- thermal noise- calibrate- speckle- “”" border correction"… Not work
Now Ihave followed this—
Orbit correction - thermal-- border correction…than calibrate… It works
Can you tell me what threshold value to put to completely remove this border strip.
I did pixel value 10000 and threshold 10… some remains
Seems like calibration can only be done after the Thermal Noise Removal.
The ideal threshold can be found by try-and-error, because the border noise strongly varies. There is no ultimate configuration which works for all images.
Yes. Thank you…
From the description of the S-1 GRD Border Noise Removal there is a reference to a technical note on how this needs to be done, and how this is implemented by SNAP.
However, the version of the tech note is outdated.
The latest version of this tech note can be found here in version 2.1 (january 2018).
https://sentinel.esa.int/web/sentinel/user-guides/sentinel-1-sar/document-library/-/asset_publisher/1dO7RF5fJMbd/content/masking-no-value-pixels-on-grd-products-generated-by-the-sentinel-1-esa-ipf
The main update is that starting with IPF 2.90, the no-value pixels at image borders are set to 0 value by the IPF. The masking of the borders thus does not require specific processing.Masking approachfor IPF version lower than 2.90
Could you please check if this is considered by SNAP ?
I cannot answer this, sorry, but hopefully @lveci can.
Hi, ABraun. Can you tell me what the instrument processing facility (IPF) is? And how do I install and use it?
the IPF is not accessible to the user. It is rather the preparation of the data received at the ground segment by the satellite image provider. It is not part of the pre-processing of SLC or GRD data.
Ok, thanks
