Unmanned aerial vehicle assisted multi-user positioning method and system

The invention discloses an unmanned aerial vehicle assisted multi-user positioning method and system. The method comprises the following steps: the unmanned aerial vehicle performs first measurement on ground targets in a global range by using a carried orthogonal frequency division multiplexing radar system to obtain position information of each ground target relative to the unmanned aerial vehicle, and estimates a first group of potential coordinate sets of the ground targets by using the position information, the first group of potential coordinate sets reflect potential coordinates of each ground target in four quadrants of the first reference coordinate system; the unmanned aerial vehicle performs second measurement to obtain a second group of potential coordinate sets of the ground target, and the flight angles of the unmanned aerial vehicle are different for the first measurement and the second measurement; and estimating the position information of each ground target as a positioning result by compari