Optimized station distribution method of radar receiver positioning system based on multiple external radiation sources

The invention relates to an optimized station distribution method for a radar receiver positioning system based on multiple external radiation sources, and the method comprises the following steps: 1), building a positioning model in a two-dimensional plane, and the positioning model comprises m external radiation sources, n receiving stations and a to-be-observed target; 2) respectively calculating the distance from the to-be-observed target to the external radiation source, the distance from the to-be-observed target to the receiving station and the distance from the external radiation source to the receiving station; 3) calculating the time difference between the external radiation source signal reflected by the to-be-observed target and arriving at the receiving station and the direct wave thereof; 4) differentiating the equation for calculating the time difference in the step 3); 5) solving a geometric accuracy factor corresponding to the external radiation source; and 6) performing iterative search solu