The height information of exif's GPS items recorded when using AGL appears to be different from the actual height.

ORE0NG

The height information of exif's GPS items recorded when using AGL appears to be different from the actual height. 

When I checked the contour elevation of the digital topographic map, I will take the flight as an example at an altitude of 110m AGL on a terrain of 145m. 

In this case, an altitude of 255m should be recorded, but in reality, it was recorded at an altitude of 326.6m.

In other cases, if you go down to a lower altitude at 110m AGL from a 96-degree shooting position, it may be negative than the standard and recorded as 70m. 

The device used is dji air2s, and it is recorded that the Above Sea Level is correct when shooting using dji app.

I wonder if this is Air2s, so the altitude value is recorded differently due to GPS satellite problems when shooting.
I'm asking you a question because it becomes a problem when analyzing after mapping.

I'm using webodm for the program. Is there anything else I can correct?

I'm using DTM etc in Qgis after putting it together in Webdom.

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Comments

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  • Comment author
    Jim McAndrew Dronelink Staff

    Dronelink doesn't control the EXIF data, it is handled by DJI's firmware. You need to contact DJI support.

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