Unmanned aerial vehicle GNSS interference source position and interference range radius online estimation method

The invention relates to an online estimation method for the position and the interference range radius of an interference source, in particular to an online estimation method for the position and the interference range radius of a GNSS interference source of an unmanned aerial vehicle, and solves the problem that the position and the interference range of the interference source cannot be quickly estimated at low cost. The method comprises the following steps: step 1, setting K and letting j = 1 during first interference; 2, recording the position of the previous moment of interference, setting the target course as the reverse direction of the moment, and setting a turning direction; 3, flying to the target course; 4, judging whether the positioning is successful or not; if not, returning to the step 3; if so, recording the position when the positioning is successful and letting j = j + 1; 5, judging whether jgt exists or not; k; if yes, executing step 8; if not, the target course is set to be the reverse di