dbrugger25 wrote:
Yes, you absolutely can measure airspeed with GPS. I was a licensed private pilot until I got too old. I used GPS for coordinates, altitude, speed and direction. I also had a Pitot tube and autopilot. The autopilot relied on GPS and the display would calculate my time of arrival based on destination input, air speed and direction of travel and current location. For that matter, the GPS in my cars and my smart phones can do all that as well.
Sure can measure speed with GPS but not airspeed.