Node positioning method based on RSSI (received signal strength indicator)

The invention relates to the field of wireless network data transmission and discloses a node positioning method based on an RSSI (received signal strength indicator). Reference nodes and target nodes are used in the method. In order to realize node positioning, the method comprises the following specific steps: calculating a distance d, related with the RSSI value of each reference node, between each reference node and each target node; determining the number of the reference nodes related with the target nodes and performing positioning based on the number of the reference nodes; during positioning, establishing at least one mapping between the target node and the reference node, wherein the mapping at least comprises the target node obtained based on the position of the reference node, the reference node and the distance, related with the RSSI value of the reference node, between the reference node and the target node or position information; and positioning the target node based on the mapping. The node positioning method has the advantages that a problem in calculation of a node position of any target node can be really solved, and the node position can be further corrected, so that the positioning accuracy is improved.