sarproz-group

Amp. Stab. Ind plus Sp. Coher

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    • May 12, 2016 at 4:03 am #1639
      cnuhyl
      Participant

        when I use MST method processing ASAR data，I already process interferograms processing and coherence map generation 。I use Amp. Stab. Ind plus Sp. Coher method to choose PS points， the software has a message is
        files D:\SY\ASAR\08yihou\1\RESULTS\ASICoher and D:\SY\ASAR\08yihou\1\RESULTS\ASICoher.mat not found

        0 points with Amp. Stab. Ind plus Sp. Coher. > 0.70 , in window from 1 to 380 samples, from 1 to 2240 lines

        ignoring birth and death dates, selecting all targets

        WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING

        you are creating a misleading selection of points based on a matrix containing only ones and zeros

        probably you generated your own subselection of PSC from Scatter Plots without chosing a color

        you’ll get bad results: change your PSC selection!!!

        0 PSC with Amp. Stab. Ind plus Sp. Coher. > 7.000000e-01

        can you tell me what’s the reason of this trobule？ thank you！

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      • May 12, 2016 at 4:41 am #1641
        periz
        Keymaster

          the message u posted states that the “Amp. Stab. Ind plus Sp. Coher.” parameter is not found.
          Such parameter is generated when you save the Spatial Coherence.
          So, my suggestion is: run the coherence map generation again. I expect that in this way you will solve the problem.
          If on the contrary the “Amp. Stab. Ind plus Sp. Coher.” will still be missing, I expect that you will get an error message during the coherence map generation. In such case, send us laterror.mat and log files (make sure the log contains the last messages)

          • May 12, 2016 at 5:04 am #1642
            cnuhyl
            Participant

              I run the coherence map generation again, the message is

              Coherence map processing started

              loading Graph_0290.mat graph

              allocating 190 x 224 samples, type: 0

              save_asi_coer: Firstly, process the Spatial Coherence! Aborting.

              The Processing concluded successfully, here a specific message:

              Coherence Map Generation : job ended
              why save_asi_coer failed？

            • May 12, 2016 at 5:07 am #1643
              cnuhyl
              Participant

                this is laterror.mat and log files

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            • May 12, 2016 at 5:39 am #1645
              periz
              Keymaster

                ok, now I understand the issue.
                in fact, we did not consider this situation, we will modify the code for that.
                The fact is that you are multilooking. as a consequence, the “Amp. Stab. Ind plus Sp. Coher.” is useless.
                in fact, the amplitude stability index is a full-resolution index. if you multi-look, it makes no sense using it…

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