SARPROZ ©

Hi V,

For the data corruption part, it is a known issue. In sarproz we implemented several ways to detect corruption of SLC images. You should get warnings/errors if they are corrupted.

In the case where no warnings/errors were given, it is always helpful to check:

(1) The JPGs of SLCs in EXT/yyyymmdd folders and in FITTED folders. If the…[Read more]

Hi Yuxiao,

I am using the newest version.
I solved my problem with co-registration. I’ve just realized that it was due to corrupted downloading of Sentinel images.

However, do you have some general recommendations or tips to get reliable results from Sentinel data processing (parameters and so on)?
I am doing processing Sentinel 1 data over…[Read more]

Hi Jaroslav,

Yes and No. A few explanations:

Yes Part:
1. My experience is that spatial baseline is not a big problem for tops in general. Since (a) tops has such good control in its orbits precision & accuracy; (b) the baseline is usually quite small (within 200 meters in general). So geometric decorrelation is not really a big issue here.…[Read more]

Hi Yuxiao,
Doesn’t master choice influence co-registration process a lot? I have often noticed, that outcome may be significantly improved just by choosing right master.
Additionally, I’d like to ask about Sentinel master choice methodology. Usually, master is chosen such, that the dispersion of the perpendicular baseline is as low as possible,…[Read more]

Hi Venera,

First of all, please make sure you are using the newest version.

Second, it would be helpful to check the coherence of the pair that shows this warning. The goal is to check that if the coherence of interferogram is indeed so bad that accurate subpixel coregistration could not be performed.

At last, it would be helpful if you pass…[Read more]

Hi
I look forward to your reply and i’ll appreciate your fast response,
Thank you in advanced
Best regards

Thanks for the quick response.

Hello,
I didn’t actually completely overcome this issue yet.
However, the master choice seems to help sometimes. In cases of problematic co-registration I usually try to manually evaluate image list in order to exclude the most noisy ones and choose the most contrast image as a master.
Somebody, correct me if I’m wrong, please.

Hi Jaroslav,
How did you overcome your issue?
I am facing these warnings, however I am processing a whole subswath..

Thanks.

Hi,

I am still working on it, please give another couple of days. Thanks.

Q

I’m still waiting for the sarproz update to processing stripmap data of Sentinel sensor. I’ve been using version 5-may-2017 recently, i’ll be thankfulness if you notice me whenever new sarproz update arrives, which has the capability of process​ing stripmap sentinel data, and give me new pcodes file.

hi
Thanks very much for your helpful tips.

https://dds.cr.usgs.gov/srtm/version2_1/SRTM3/Eurasia/,
you can download srtm from this websit.

Hi Periz
How can i download SRTM manually and place them in that folder?

Thanks

Hi Pawel,
we could change that piece of code to allow you using that function with your old matlab version.
However, you may find other issues later on. If it is easy for you to upgrade matlab, please do it. If you cannot, let us know and we will make those changes
best