This is a major factor.
The number of sats your drone can see is roughly proportional to the percentage of the sky it sees.
And more than the number of sats, it also means that the sats your drone does see, are more likely to be bunched and not...
That's uncommon, but not unusual.
The time taken and number of sats before you have full GPS quality is quite variable and affected by a number of different factors.
I have seen it take >20 sats before being able to record a home point on...
If it can be done the way you are considering (and that's highly unlikely), the task would require a specialist operator.
Someone experienced in detailed technical engineering inspections.
It's going to need someone with more than experience in...