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Vertical Accuracy and VDop

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@moobsen wrote:

Hi everyone,
I am trying to understand the accuracy of the GPS on the drone. My current understanding is VDop is a mathematical value based on the quality of the GPS signal. This is reported by the GPS. From it one can calculate VAcc, or vertical accuracy.
My question now is how is this calculation done? If I compare the two values in the log, under the point GPA, there does not seem to be a clear relation.
All I really want to know is, how accurate the vertical position from the drone is, in meters. But I do not know how to find/calculate this.
Any help is appreciated.

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