sarproz-group

GCP height

This topic contains 2 replies, has 2 voices, and was last updated by  antig 1 week, 4 days ago.

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  • #3526

    antig
    Participant

    If I adjust manually GCP for better geocode stack then elevation is readed automaticaly. By default external dem si SRTM. But if I look the log file then there was written elevation from ellipsiod (WGS84). It is confusing because EGM96 geoid unudaltion is added to SRTM model. Question: What elevation is referencted manual GCP? For example I copy command promt note.
    loading GCP:
    north coordinate (UTM): 6361399.0
    East coordinate (UTM): 532193.0
    UTM Zone: 34
    Hemisphere: North
    ??ellipsoidal height (WGS84): 2 ??????
    sample: 12138
    line: 2317

  • #3527

    periz
    Keymaster

    Hi Antig,
    you are right, it is incorrect. The height is geoidal and not ellipsoidal. We need to tidy up some statements here and there. But the geocoding in the end is accurate.
    best

  • #3531

    antig
    Participant

    Thanks its clear now 🙂

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