How to choose a quadcopter for flying by points (gps) without a user?

Question

satellite navigation

Interesting experience in choosing and advice from those who have already encountered.
The task is as follows:
1. Coordinates are uploaded to the copter (usb/wifi/bt/etc)
2. The copter goes along the route without user intervention to a distance farther than the wifi/remote coverage area
3. Having finished the route, it returns to the starting point.
Application:
For shooting large objects from the air, it can be difficult to be within the radius of the radio signal. Ideally, the user does not affect the unit in any way from takeoff to landing.
On many copters, I saw the presence of gps in the list of characteristics. But the function of flying by points is somehow not declared. It is possible that in some models it is used to stabilize the height. What models should be considered?

Answer 1

Yes, yes, take it easy.
What else INS? There, in 10 seconds, such an error will accumulate, which is mine. I know what I'm saying. Try to "hover" the copter at the point with GPS hold disabled. After 10-20 seconds, it will begin to slide smoothly sideways, even without wind. I'm already silent about what will happen with the wind.
Now on business.
At the moment, I know of three intelligible flight controllers that carry out automatic missions at given points:
DJI Wookong-M (now modified and called DJI A2)
MikroKopter - produces both controllers and fully finished copters.
ArduCopter.
The latest project is open, cheap, and buggy as hell. But this is the only affordable solution.
Naturally, all quadcopters use GPS for navigation. And in Russia its quality is not very good - there are no ground correction stations, there is no normal atlas. Therefore, the quality of retention and navigation using GPS suffers.
In general - automatic missions - this is not such a simple matter as it seems at first glance. And the closest attention should be paid to the failsafes and rescue systems of the copter in case of abnormal behavior.

Answer 2

DJI Wookong-M (now modified and called DJI A2)

DJI Naza v2 also supports waypoint flight, but there are fewer waypoints than DJI Wookong-M, but cheaper

Answer 3

dji ground station for dji phantom vision 2 seems to give such an opportunity?

Answer 4

I use the DJI Phantom4 for this purpose and the UgCS utility to upload autopilot missions to it.
You can set the aircraft to complete the mission even if the remote control signal is lost. I tried that, it works great.