sarproz-group

Amp. Stab. Ind plus Sp. Coher

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    • #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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    • #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)

      • #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?

      • #1643
        cnuhyl
        Participant

        this is laterror.mat and log files

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    • #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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