sarproz-group

Rg Slope aclaration

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    • #4765
      dsanchezalamo
      Participant

        Hello, I would like to get a better understanding on analyzing Rg Slope Button in Small Area Processing –> Geocoding. My problem is when I look the Ground profile and the Line of Sight in the graphic, I obtain a line that apparently is impossible to get because the line of sight cross the ground profile twice. How can I understand the graphic?. In addition, other points in the same analisys have this problem.

        Best regards,
        David

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      • #4771
        periz
        Keymaster

          Hi David,
          in that plot you can see the red point indicating the location of the pixel you are observing
          the blue line is a line connecting the satellite with the ground point
          the black line is the local ground profile taken from the DEM you loaded (SRTM by default).
          In principle, this is what is plotted, independently from whether it is true or not (e.g. the location of the target could be wrong -if data are wrongly geocoded- or the local slope could be wrong -if the DEM is wrong-, and so on).
          The fact that the blue line intersects the ground slope twice is nothing wrong in itself.
          best

        • #6925
          egimenezlwd
          Participant

            Hello.

            I understand that the local ground profile is taken from the DEM but my doubt is about the section of the DEM that is represented on the graph. ¿Is it an East-West cut or a section perpendicular to the LOS?

            Thank you for your help.

          • #6926
            periz
            Keymaster

              Hi,
              the section is containing the LOS, perpendicular to the azimuth direction (flight path)
              best

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