Position information determination method, system and device and storage medium

The invention discloses a position information determination method, system and device and a storage medium, and the method comprises the steps: obtaining preparatory CSI data, extracting positioning features meeting a discrimination standard in the preparatory CSI data, and forming a CSI data set corresponding to each antenna pair; determining a neighbor sample set of each antenna pair according to the positioning features of each antenna pair and preset reference points, wherein the neighbor sample set comprises a plurality of preset reference points of which the similarity with the positioning features of the antenna pairs meets a preset similarity standard; and performing frequency statistics on neighbor samples in the neighbor sample set of all the antenna pairs, and determining position information. According to the multi-antenna pair fusion-based CSI implementation indoor positioning method, CSI features on a plurality of antenna pairs are fully mined, effective fusion and statistical screening are per