SARPROZ ©

once again

Yes. In fact, all the pixels displayed correspond to one corner reflector. I am playing with the data to see if the reflectors are really visible, the interpolation of the position and phase will be the next step for me to try.

But the problematic pixel is the one I expect to be the center, with the highest intensity. I did not meet this problem…[Read more]

Yes, the .off file is present and looks reasonably.

And slave image is also in the EXT folder, except for the fact that it is not VV, but HH, and the corresponding jpg looks reasonably, similar to the master.

By the way (the processing is not important, I am doing it just to check and see), I could not open the site processing (did you see it…[Read more]

Hello Yuxiao,

just for sure, I am reporting failed coregistration (for 1 image) on different scene set. I cannot find any reason (error) for this. And the error does not let me go further.

Thank you, Ivana

once again the attachment

Hello Yuxiao,

OK, trying to attach the logfile (long).

the image with the phase jump is 20141223.

and the images with wrong coherence (at the North) are 20150820-20150901, 20150703-20150715, 20150808-20150901, 20150727-20150808, 20150715-20150727.

regarding the area: the center is now (if I remember well, is it possible to get the values…[Read more]

sorry, the file was also too large 🙂

http://www.insar.cz/itfs.zip

Ivana

Hello,

sorry for my long pause, I was out.

Now I am trying the processing again, with the compiled version of Aug 31st (as the update function does not work for me in the matlab version).

I decided to delete those problematic images, as they were problematic due to only partial overlap with the others in the AOI. The process of selecting the…[Read more]

Hi Yuxiao,

the interferograms (resp. their coherence) is striped again with the new version.

Regards, Ivana

Hello Yuxiao,

I reprocessed the dataset with the new version. One black strip is again present in (coregistered) 20150504 and 20150516, as these are the two images with earlier timing, so the area of interest is not completely covered. The extracted slaves look ok, but they are thinner (less lines). This is probably the source of the problem.

I…[Read more]

Hi Yuxiao,

one more note:

I have now reprocessed the area once again with more images, and again: the first two (different days) look OK, the others are striped (with the same version of sarproz).

Regards, Ivana

Hi Yuxiao,

one more fact (do not know if it is caused by the stupid error you mentioned or with the problems with topography as mentioned by Daniele earlier):

having now more interferograms, there are more of them “reasonable” (i.e. not striped coherence), but many of them contain phase fringes in the azimuth direction and their frequency is not…[Read more]

Hello Yuxiao,

yes, the reasonably-looking interferograms are 20150305-20150703 and 20150317-20150703. I am now processing more interferograms (full graph) to see whether more interferograms are reasonable.

Ivana

And at last,

I am attaching what I got as interferograms. Two of the interferograms look reasonably, two of them contain the stripes noted in the last post and the rest (7) of images look like this (attached): stripes in coherence.

(in the last post, I forgot to note that 20150703 is the master image.)

Do not know whether it can be caused by…[Read more]

Hello again,

I keep on processing, despite some images do not cover the whole area. I have encountered two errors I do not understand:

the first is in the lasterror.mat and .log files,

the other is the scshot documenting one of the resampled slaves (I would expect black at the end of the image, but not a stripe…) there are two images like…[Read more]

Thank you Yuxiao,

no, I mean something else:

having two images:

S1A_IW_SLC__1SDV_20150504T051700_20150504T051727_005767_007683_7E38.SAFE
S1A_IW_SLC__1SDV_20150504T051725_20150504T051752_005767_007683_1924.SAFE

they are apparently one following other in the flight direction,

(during spring, everywhere was disclosed that they can be tiled…[Read more]

Hello again,

the S1 images do not overlap by 100% (although the bursts should be synchronized, they are put to different images each time), but according to ESA, it can be tiled seamlessly (in the azimuth direction). My area has such a problem: in some images, it is contained as a whole, in some images, only part of it is contained.

I also tried…[Read more]

Hello,

also thanks for the TOPS module.

Seems to me (not critical) that the UPDATE mode in the SLC DATA IMPORT module does not work… if I press Slave Extraction, it tells me to use Master Extraction first… and the Master Extraction does not work either.

(encountered more times)

I.