The differences between airspeed and groundspeed?

ArduCopter Copter 3.5
1

Hi, all

I view the dronekit document, there are airspeed and groundspeed parameters, I use a mutilcopter, so I am confused, what’s the difference between them?

Thanks a lot in advanced

Tom

2

@zhitao,
I guess you are talking about missions? For Copter, we only support setting the speed as ground speed
Thanks for using ardupilot!

3

Thanks a lot for your reply