stevexu

  • the error u sent here shows that the sw cannot connect to the ftp server for downloading orbital data

    u have the following options:

    a. find a better internet connection (e.g. via a VPN)

    b. download manually the data from esaftp.dfd.dlr.de and store them in a folder called G:ORBITS
    files have to be organized according to sensor and year…[Read more]

  • Dear Dr/Mr. Periz,

    Please find the file in rar format.

  • Hi Dr/Mr. periz,

    Please see the attached .mat and .log files. please help me to sort out the problem.

  • Hi Vinay,
    as you can clearly read in the messages, if you get an error, in order to get assistance you have to send the lasterror.mat and the log files

  • Can you try to make a new folder, and only put the two envisat into the SLC folder of your new folder, and see what happens?

    It’s kind of wired because the name looks like exactly an envisat SLC image.

    Besides, what’s the point of putting three pairs of SAR images required in 1991, 1999 and 2010 together? It is pointless.

  • Dear Sir/Madam,

    Yes, i saw that we need to create two directories for two different sensors. I have created two different directories for ERS and Envisat. Still i am getting the error. Please check the attached for error message. please guide me to convert the .N1 data to IMS or APS.

  • Dear Sir/Madam,

    Yes, i saw that we need to create two directories for two different sensors. Please check the attached for error message. please guide me to convert the .N1 data to IMS or APS.

  • Hi,

    Sorry that I missed a detail in your attached picture.

    I see that you’re using two sensors.

    If you want to do this, did you follow this instructions?

    “The software has also the possibility of processing two sensors together (as ERS and Envisat. See References).
    To do this, you need to create another folder within the DataSet directory.…[Read more]

  • Dear Yuxiao, The name of the asar file i am trying to import is “ASA_IMS_1PNUPA20100621_045425_000000162090_00291_43431_6800”.
    Can you please suggest me that, is there any way to convert this file to IMS or APS?

  • It simply means your data is not supported, it is not IMS or APS data

    Look into the name of your N1 data, and you will know what it is

    or you can post the name here so we can know what type it is

  • DEAR SIR, I AM TRYING TO IMPORT THE SLC DATA OF ENVISAT ASAR OBTAINED IN .N1 FORMAT. BUT I AM GETTING THE ERROR AS “ERROR IN ASAR_IAS_META<>: ONLY SUPPORT ASAR IMS OR APS DATA!”. CAN YOU PLEASE HELP ME TO SORTOUT THIS PROBLEM.

  • The software has some default parameters for coregistration.
    If the coregistration fails at the first step, one has to plot the images to check why it failed.
    Then, depending on the reason, you can change the coregistration parameters.

    In your case, the two images look similar and have corresponding features that can be used for coregistering…[Read more]

  • Dear Daniele,

    I started to process 2 ALOS data, but after coregistration step i get this error:

    Error in cull_points(): fewer than minimum points, only 17 left!
    WARNING!!! coregistration of image 20101212 failed!!!!

    And then i try to start again (re-run the tool, using SLC data module), “get contents”, check “update”, set orbits, then go to…[Read more]

  • a. before exporting data, I suggest you to use the “visualization tools” to explore the results. In particular, histograms and scatter plots are very useful tools. In the scatter plots, you can analyze the correlation between different parameters, you can plot them in 2D/3D in SAR coordinates or geographic coordinates, you can place many…[Read more]

  • Hi,Professor Daniele

    When I finished the APS and SPP module operations,the result obtained in “Sparse geocoding” module are lots of points containing deformation information,including velocity,cumulative displacement ,etc. I’m not sure whether the velocity values and cumulative displacement values are absolute values or relative values with…[Read more]

  • While waiting for more documentation to come,
    I open a new topic on this matter for the newcomers.
    In Sarproz, Persistent Scatterers interferometry is applied to un-filtered full-resolution data.
    This means that you do not need to generate interferograms if you want to process Persistent Scatterers.
    It is suggested to process interferograms if…[Read more]

  • Hi Fatma,
    I moved your post to a new topic, because it’s dealing with an important matter.
    Sarproz has been designed to recover from almost any situation.
    You should NEVER need to start processing things over again.
    In particular, for interferogram processing, in InSAR Params (section 1.4.3.1. of the manual) you can tick the “update”
    option and…[Read more]

  • Hi Daniele,

    Thank you for your explanations, i considere. And also i am continuing to process, but i have new problem.
    While i am processing “interferogram processing” step, unfortunately my battery finished and process failed (it is about %43 finished).
    Can i continue or change something for repair this step?

    Thank you again,

    Bests

  • Hi Daniele,

    Thank you for your explanations, i considere. And also i am continuing to process, but i have new problem.
    While i am processing “interferogram processing” step, unfortunately my battery finished and process failed (it is about %43 finished).
    Can i continue or change something for repair this step?

    Thank you again,

    Bests

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

    Hi Qingli.

    APS processing module options:
    – I.P. stays for Inverted Parameters
    – I.R. Inverted Residuals
    – Tri. I.R. Triangular Inverted Residuals
    Generally, you should use the I.R. option. If the APS looks ok and the test shows a homogeneous high coherence in your analyzed area, then you can proceed further and be assured that everything is…[Read more]

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