getGroundSpeed

open fun getGroundSpeed(): Int

Ground speed in m/s and True North TRACK in 1/100 degrees
Clarification of terms:
- "track" is the direction of motion (measured in horizontal plane)
- "heading" is where the fuselage points (measured in horizontal plane)
- "yaw" indicates a relative rotation about the vertical axis
TODO: REMOVE/INTEGRATE
optional uint32 ground_speed = 15;

Return

The groundSpeed.