Air speed is the speed of an aircraft relative to the prevailing wind speed.
GPS devices measure speed over land not air speed, so may give a misleading figure for airspeed.
Using Pitot tube assemblies is the most common way of measuring air speed at the moment on aircraft.
Are there other ways of doing this?
Is it possible to use strain gauges attached to aircraft structures (for example, where the leading edge of the wing meets the fuselage) to infer auxiliary measurements of air speed from strain forces on the aircraft?
Small pressure plates or other devices on forward facing structures would be possible as well, but they might be subject to icing up in certain conditions just like pitot tubes are (ideally the auxiliary sensor should operate independently and not fail under the same environmental conditions as pitot tubes).
Any thoughts? Good for a student project perhaps?