Node positioning method and system in wireless communication network based on target tracking

The invention provides a node positioning method and system in wireless communication network based on target tracking, which comprises the following steps of: determining an estimated position of a target according to a geometrical relationship between the target and the nodes; according to the intensity of received target signals, ranking the nodes from strong to weak, and realizing target tracking by adopting a target distributed cooperation method; determining a selected node according to the relationship between the node position coordinates and the estimated trajectory; establishing a selected node positioning model and a wireless signal propagation path loss vector model, receiving the wireless radio frequency signal data of the beacon node by the selected node, and outputting a distance parameter between the target and the beacon node according to the established wireless radio frequency signal transmission model; carrying out coordinate calculation of the selected node according to the distance param