Accurate repeated waypoint routes

[Camerart]

Some gps devices aquire ephemeris files giving information on positions of satellites. I’m not going to try to explain it, but yes, the orbits and positions of the gps satellites can be predicted.
But, the drone altitude is calculated by the drone’s barometer and is never going to be absolutely accurate or even stable, given that atmospheric pressure changes over time as well as due to altitude change. Hence me having to recalibrate my watch before exercise and it not being able to accurately tell me how many flights of stairs I’ve climbed!

Hi B,
Ok, thanks, as I'm on the wrong thread, I'll ask again in a separate one.
C.

 

[Meta4]

Hi,
I was wondering about the satellites and their positioning and number! Are they moving at random, or will they be in the same position at a certain time.

The satellites are always moving.
This animation shows what their movement is like.

The actual sats are orbiting much slower and there are many more of them.

This may mean that to get consistency, launch drone at the same time and the same place.
Who thinks this is correct?

That's not correct at all.
You would get consistency any time that your controller is showing the sat icon in white.
But the accuracy of GPS is still going to be variable around +/- 2 to 3 metres.

 

[Myersfilm]

How much drift are you talking about?

About 5-7 feet.

 

[Myersfilm]

Greetings from Birmingham Alabama USA: welcome to the forum! We look forward to hearing from you!

Currently, I have 4 construction sites that I am doing. I dropped my Air 3 and replaced it with the Air 3s and the waypoints worked perfectly. No variance at all. So, I only have one question. Did you fly the waypoint route to make it or did you make it via the map?

I flew it to make the route.