A somewhat unrelated question. It seems like beacons broadcasting their GPS location at 978 MHz (30cm) from altitude could be used to measure parameters of the

A somewhat unrelated question. It seems like beacons broadcasting their GPS location at 978 MHz (30cm) from altitude could be used to measure parameters of the atmosphere. Take 3 frequency-locked receivers, separated by a few meters, and it seems like, one can get the wind vector along the line of the airplane/receiver. Feasible?