attstage

  • periz replied to the topic SAR coordinates computation in the forum Sarproz Forum 9 years ago

    type “fast” in Matlab
    and then use the following expression
    [Rg,Az]=geo2SAR(lat,lon,h,el,Master,handles.SiteParam.DirSite);
    el=1 corresponds to WGS84
    otherwise input a string like GRS80 or the ellipsoid you need

    to extract phase/amp values the easiest way is to use the small area.
    when you load a small area, complex numbers are accessible in the…[Read more]

  • ivca-cz replied to the topic Sentinel TOPS threads in the forum Sarproz Forum 9 years ago

    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

  • Hello,

    I would like to ask if there is any (direct) possibility to compute SAR coordinates (let’s say with the precision of 10-20 pixels) on the basis of known lat, lon. And then, if it is possible to grab out the phase/reflectivity values of (few) selected pixels.

    Thank you, Ivana

  • ivca-cz replied to the topic Sentinel TOPS threads in the forum Sarproz Forum 9 years ago

    once again the attachment

  • ivca-cz replied to the topic Sentinel TOPS threads in the forum Sarproz Forum 9 years ago

    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]

  • Yuxiao replied to the topic Sentinel TOPS threads in the forum Sarproz Forum 9 years ago

    Hi Ivana,

    Recent days I am working on killing the bugs that are possibly occurred because of partial overlap images. In the next few days a new version should be released and it should work better with those partial overlapped images.

    Can you provide the log file of geocoding all interferograms and what the error is? So we can look into detail…[Read more]

  • Yuxiao replied to the topic Sentinel TOPS threads in the forum Sarproz Forum 9 years ago

    Hi Matus,

    I am still looking into your results and logs, but I reply here what I’ve finished looking and I will keep on investigating and reply you the rest.

    1. Co-registration-error: Sorry, this error was due to a bug in the code that deleted the SLC file so that the file for coregistration refinement is missing. I will kill this bug for the…[Read more]

  • ivca-cz replied to the topic Sentinel TOPS threads in the forum Sarproz Forum 9 years ago

    sorry, the file was also too large 🙂

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

    Ivana

  • ivca-cz replied to the topic Sentinel TOPS threads in the forum Sarproz Forum 9 years ago

    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]

  • matusbakon replied to the topic Sentinel TOPS threads in the forum Sarproz Forum 9 years ago

    sorry, the file was too big to be included in attachement

    https://www.dropbox.com/s/m30bbbhcoarrreh/tests.zip?dl=0

  • matusbakon replied to the topic Sentinel TOPS threads in the forum Sarproz Forum 9 years ago

    finally, i get some promisingly looking set of images and interferograms, but also:

    1) corregistration refinement error (applied experimentally),
    2) interferograms plotted through Small Area Processing differs when “View SLC” and “Read and Plot Interfs” functions are used,
    and can be seen in attached zip (second folder with time-ordered print…[Read more]

  • periz replied to the topic Sentinel TOPS threads in the forum Sarproz Forum 9 years ago

    We are working at stitching subsequent images together. Up to now Sarproz never did it, we always worked with single footprints.
    The reason for renaming images acquired on the same day was a quick and dirty solution for managing TanDEM-x bistatic pairs without changing the naming convention.
    What you can do at this moment is working on them…[Read more]

  • matusbakon replied to the topic Sentinel TOPS threads in the forum Sarproz Forum 9 years ago

    hi there, apparently there’s a problem with renaming the Sentinel-1 images with the same dates.

    when the duplicates are deleted from SLC directory, it is possible to continue with proccesing.

    lasterror.mat and log files attached

    cheers

  • Thanks for your suggestion. I am trying, ‘Height’ here mean the accumulative height, doesn’t it?

  • periz replied to the topic SPP geocoding export in the forum Sarproz Forum 9 years, 1 month ago

    the “smart” function implements a non-linear analysis, so, it is clear that the linear velocity will not be estimated
    use the Cumulative displacement instead.
    consider anyway that here the key point is the estimation of the height.
    after the smart, you could repeat the analysis reading the height previously estimated and estimating a new linear…[Read more]

  • The result estimated by linear trend is not so impressive. I shall consider use the smart5, but how to make it export the geocoded SPP displayed on the Googleearth? Last time I directly use the smart5, system give an error on the miss of inupt Vel.mat.

    The result does not show the main subsidence in Xiaodian area, which was eager to detected.

  • Dear Prof.Daniele

    Please, Find attach error file below

    Best Regards,

    Ana

  • 1. that is no “software error”. it’s a message about terms called “master error” and “reference error”. if the software returns an error you get the usual messages “an error occurred … lasterror.mat was saved …”
    2. probably you clicked on a pixel which is not a PS. but as I can see from that attachment, a PS IS selected and its parameters ARE…[Read more]

  • Dear Prof.Daniele

    From the problem above, It is SOLVE and OK.

    But, After I re-processing my data, Any problem occur.
    I used 20 ENVISAT ASAR image and using STAR-graph (before I used MST-graph).
    In Site Processing toolbox, I have done and have very good result based on coherence graph (See image).
    I want to generate Geocoding, it’s mean I must…[Read more]

  • I think I made a mistake, it was the logical cores…

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