periz

  • periz replied to the topic ALOS-2 import in the forum Sarproz Forum 9 years, 8 months ago

    Thanks,
    this was a bug (in the compiled version) and it has just been fixed. At this moment you can download the windows compiled version (using the manage version module).
    Are you using windows or linux?

  • periz replied to the topic ALOS-2 import in the forum Sarproz Forum 9 years, 8 months ago

    Thanks,
    this was a bug (in the compiled version) and it has just been fixed. At this moment you can download the windows compiled version (using the manage version module).
    Are you using windows or linux?

  • periz replied to the topic SLC Data Selectin in the forum Sarproz Forum 9 years, 8 months ago

    Hi Santiago,

    did you read this? http://www.sarproz.com/groups/sarproz-group/forum/topic/data-import-update-with-external-data/

    did you download the last version, produced after that discussion? let me know if it solves your issue.

  • periz replied to the topic Geocoding in the forum Sarproz Forum 9 years, 8 months ago

    As explained many times to you in person,
    in this forum, in the manual, tutorials and so on,
    the best way to geocode a dataset is precisely manually. In fact, it takes very little to geocode a dataset manually in Sarproz.
    You can check it in the many examples in the tutorials.
    Why?
    1. because there are many sensors for which the orbital…[Read more]

  • periz replied to the topic APS processing in the forum Sarproz Forum 9 years, 8 months ago

    1) why do you use DS=10 and DL=10?
    Leave DL=0.
    2) how big is the area, did you check the initial selection of points in the refl map/amp stab map?
    18 images is enough for a PS-like analysis, but you have to be very careful because all statistical indexes are affected by the low number of images.
    3) why didn’t you keep the Non-Linear weights…[Read more]

  • the log file is very explicit
    u should carefully read the messages from the sw

    after the
    WARNING!!!!! The cube of loaded data contains 26 images, while the current dataset has 31 data
    You can load the data again through “Select Area”
    which it seems you read,

    then the sw says:
    reading phase-flat coefficients
    leggi_flat: at least one…[Read more]

  • periz replied to the topic PSInSAR Analysis in the forum Sarproz Forum 9 years, 8 months ago

    this result looks much more reasonable.
    however, I’d suggest you to use the I.R. APS. read old posts on this topic.

    I do not understand your question about the amplitude time series.
    Your example looks ok and it shows that no evident pattern is visible.
    For other cases, please read some papers about temporary PSs (or check the ampl time series…[Read more]

  • periz replied to the topic APS processing in the forum Sarproz Forum 9 years, 8 months ago

    probably you used wrong weights.
    which APS options are you using?
    Can you grab the APS module screen and show them to us?
    Also, how many images are you processing, from which sensor, which images graph?

  • hi Ivana,

    thanks for your message, indeed, I found a bug, introduced by an update, in a non-tested configuration.
    I am going to upload soon the bug fix.
    The error occurred while managing the index of images to add.
    You noticed that in your case the sw processed again all images (which should not happen).
    As a consequence, all images were added…[Read more]

  • periz replied to the topic PSInSAR Analysis in the forum Sarproz Forum 9 years, 8 months ago

    Hi Ana.
    the selection of points looks not good. so, the graph has few good connections and the result is quite bad.
    if you are analyzing a 3×3 sqkm area and you have a GPS station at 8km distance you cannot do much.
    dp

  • periz replied to the topic PSInSAR Analysis in the forum Sarproz Forum 9 years, 8 months ago

    Hi Ana.
    the selection of points looks not good. so, the graph has few good connections and the result is quite bad.
    if you are analyzing a 3×3 sqkm area and you have a GPS station at 8km distance you cannot do much.
    dp

  • periz replied to the topic Exporting products in the forum Sarproz Forum 9 years, 8 months ago

    Sarproz has many ways to export results.
    The two most common ones can be found in the “results exporting” frame in site processing: “extended geocoding” and “sparse geocoding”.
    In the first case, you can choose between kml and geotiff formats. In the second case, the options are: csv and kml.
    If you want to export sparse results (as those…[Read more]

  • 1 and 3. When you work with Persistent Scatterers (without using weights, that is, without filtering) Sarproz does not need to generate and write interferograms. Interferograms may be processed if you want to see them or if you want to use filtered phase. If you choose to process your data with a QPS-like approach (that is, using the coherence as…[Read more]

  • periz replied to the topic PSInSAR Analysis in the forum Sarproz Forum 9 years, 8 months ago

    Hi Ana,

    your result is not looking very good. How big is the area you are analyzing? can you plot the PSC graph with coherence-colored connections? Can you show us the reflectivity map and the coherence map?
    dp

  • periz replied to the topic PSInSAR Analysis in the forum Sarproz Forum 9 years, 8 months ago

    Hi Ana,

    your result is not looking very good. How big is the area you are analyzing? can you plot the PSC graph with coherence-colored connections? Can you show us the reflectivity map and the coherence map?
    dp

  • periz replied to the topic APS estimation in the forum Sarproz Forum 9 years, 8 months ago

    Hi Santiago,
    1. you choose a parameter on which you want to place a threshold (more advanced option: building your own set of points through “save selection” in “scatter plots”, and select it as a real file here)
    2. you choose the threshold
    3. you choose if you want to make the selection of points sparser or not. If not, place DS=0, DL=0. If you…[Read more]

  • periz replied to the topic PSInSAR Analysis in the forum Sarproz Forum 9 years, 8 months ago

    Hi Ana,

    from your geocoded refl map 11.jpg, I can tell you that it is not well geocoded. It looks shifted.
    The Href is at the top of your 21.jpg. Currently, you see NaN inside the text box.
    To know the value of the height, you need to sketch the SAR acquisition geometry, considering the incidence angle.
    Do it, it’s a good exercise for…[Read more]

  • periz replied to the topic ALOS-2 import in the forum Sarproz Forum 9 years, 8 months ago

    yes it can
    but since not many users tried it, it would be good if you would send us a feedback after trying
    thx
    dp

  • periz replied to the topic PSInSAR Analysis in the forum Sarproz Forum 9 years, 8 months ago

    1. to have the points match in GE, you need 2 things
    – first of all, you must have (previously) chosen a GCP that aligns your SAR data to external geographic features (as a DEM or as points selected in GE)
    – secondly, if you are processing a small area, the reference point should have been previously processed in the “site processing”, and its…[Read more]

  • periz replied to the topic residue values in the forum Sarproz Forum 9 years, 8 months ago

    hi ivana I cannot see it from what you have attached
    you should send pictures with (taken from the small area module):
    – multi image insar analysis window so that we see the options
    – geocoding windows
    – example of time series with problems
    isn’t it that it’s in mm?

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