Ground target positioning method based on Doppler effect

The invention provides a ground target positioning method based on a Doppler effect. The ground target positioning method comprises the following steps: acquiring high-precision Doppler data; determining satellite position information corresponding to the message capture time; according to the obtained message signal frequency and the calculated satellite position, ground target Doppler positioning is carried out by adopting a least square algorithm constrained by surface elevation, and target position positioning calculation is completed; according to the same ground terminal message captured by a plurality of satellites, ground terminal signal emission frequencies are respectively determined, inter-satellite measurement frequencies are corrected according to frequency differences calculated by different satellites of the same target, and multi-satellite data fusion is carried out; and carrying out secondary positioning on a target position by using multi-satellite fusion data and applying a Doppler position