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  • janbu replied to the topic Warning MT Adaptive Mask in the forum Sarproz Forum 6 years ago

    Thank you. That was helpful.
    I have proceeded with the MT adaptive filter, created the interferograms and generated the coherence map.
    In order to get QPS (using the MT adaptive filter) I am assuming I would select points based on spatial coherence
    When plotting the Spatial Coherence I basically get a map of all zero and in fact, no points can be…[Read more]

  • periz replied to the topic Warning MT Adaptive Mask in the forum Sarproz Forum 6 years ago

    this is a case where the warning is actually useless, sorry for that
    basically the writing function is set to launch a warning when NaNs are inputed (it can be indicative of some issues),
    however, in this case NaNs are kept by construction at the borders of the image
    you can proceed further, there should be no problem
    best

  • janbu replied to the topic Warning MT Adaptive Mask in the forum Sarproz Forum 6 years ago

    Noticed that the files weren’t successfully uploaded. Here is the download link:
    https://we.tl/t-Ij6K3h4fLq
    Thanks

  • janbu replied to the topic Warning MT Adaptive Mask in the forum Sarproz Forum 6 years ago

    Thanks.
    Attached is the log file and the exportPar if needed.
    Cheers

  • periz replied to the topic Warning MT Adaptive Mask in the forum Sarproz Forum 6 years ago

    we would need to see the full log to try to understand.
    you might even need to flag the debug mode to pinpoint the step where the message is given
    best

  • janbu started the topic Warning MT Adaptive Mask in the forum Sarproz Forum 6 years ago

    Hi,
    While creating the AD statistical Test in the Adaptive Filter, I get the following warnings:
    !!! Warning: NAN in input values: scrivi may write strange things !!!

    I am using a FULL graph for the images connection. What can be the reason for this?
    Thanks

  • Thank you for the suggestion, I will try out them.

    are you processing the full frame? if not, do it.

    I have tried both options, full frame (max extent) and smaller area.

    but the question is: what are you using these data for? for sure, no interferometry will be possible

    Actually, I was trying to recreate steps from Yuxiao tutorial (Earthquake),…[Read more]

  • There is not much more to add. Take a bigger reference window, lower the SNR and the correlation thresholds, lower the minimum number of points. are you processing the full frame? if not, do it.
    but the question is: what are you using these data for? for sure, no interferometry will be possible.
    if you just want to plot the amplitude, you can…[Read more]

  • Hello everyone,

    I am trying to follow Yuxiao SAR intereferometry tutorial with two ERS 2 images. I have downloaded 2 time close images (11.2010 and 09.2010). Loading images is fine, I have downloaded orbits manually and selected common area for extraction.

    But when I come to co-registration, it always fails and button become yellow. I have read…[Read more]

  • minosfylaktos replied to the topic ERS Orbits in the forum Sarproz Forum 6 years ago

    Thank you for all the valuable advices professor.
    Kind regards
    Minos

  • periz replied to the topic ERS Orbits in the forum Sarproz Forum 6 years ago

    1. next time zip the log before attaching it
    2. next time read the messages from the sw. if you do what the sw tells you to do, we all save time. specifically, the sw told you to manually unzip the downloaded orbits files
    3. you have also the option to do things manually. read well the link you posted:…[Read more]

  • periz replied to the topic Meaning of the csv results in the forum Sarproz Forum 6 years ago

    The first series are the values coming from the processed phase. The second series are the values coming from the module you adopted for processing
    best

  • Sarproz estimates a residual phase that can be attributed to the Master image.
    I do not fully understand your meaning. Let’s say you have Image0 as Master and you get a low coherence at Image0. Then you change the reference image and you set Image1 as your Master. In this second case, which one is getting a low coherence value, Image0 or Image1…[Read more]

  • when I output my PS results with csv format, the results shows two displacement imformation with date shows in the picture, what does these mean? which one is the real displacement? Thanks!

  • Hi,
    I am processing a data set 0f 24 Sentinel images with a Star Graph for the image combination.
    APS results show the lowest value (near to zero) at the date of the master, which I found weird. Changing the date of the master, I still get the lowest value at the master date.
    What can be a reason for that?
    The image is attached. I can provide…[Read more]

  • minosfylaktos replied to the topic ERS Orbits in the forum Sarproz Forum 6 years ago

    Thank you professor. I will do so as soon as possible.
    Best regards.
    Minos

  • periz replied to the topic DEM void in the forum Sarproz Forum 6 years ago

    yes void/nan values are interpolated

  • periz replied to the topic ERS Orbits in the forum Sarproz Forum 6 years ago

    Your case needs to be debugged. Please arrange installing teamviewer 10 and let’s schedule a remote connection by email
    best

  • minosfylaktos started the topic ERS Orbits in the forum Sarproz Forum 6 years ago

    Hello professor.
    Currently I am working on the Evros Delta with ERS images. Because of my little knowledge about PRC (ERS orbit files), I was looking for posts in this forum about it. I found that we have to download the files manually from ESA On-the-fly. Which I did and went well.
    Here is the post I’ve read about ERS/ENVISAT…[Read more]

  • antig started the topic DEM void in the forum Sarproz Forum 6 years ago

    Program warns that there are voids in used ext.dem model (NaN values). Does it interpolate then Nan values or do nothing?

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