JD
IIRC from my wiz wheel days ...
Indicated to (check the card/chart in the aircraft) Calibrated to (adjust for temp and altitude (air density) True. IIRC, the Higher you go, the more True you get for a given Indicated/Calibrated (those tend to be close).
You then vector sum your wind component with your velocity (a vector) (True Airspeed & heading) to get your Ground speed and Track. (Another vector, a resultant IIRC).
GPS uses expensive gremlins to do all that.
Cheers.