RSSI-based wireless sensor network arc triangle positioning method

The RSSI-based wireless sensor network arc triangle positioning method provided by the invention comprises the following steps: S10, establishing an arc triangle layout-based indoor positioning layoutmodel, and arranging a plurality of beacon nodes on the indoor positioning layout model; s20, initializing the indoor positioning layout model and the position information of the beacon nodes; s30, continuously receiving a plurality of RSSI signals of the to-be-tested node, filtering the RSSI signals through a Kalman filter, selecting three RSSI signals with the maximum numerical values, and respectively calculating three test distances corresponding to the three RSSI signals through a path loss model so as to determine the spatial range of the to-be-tested node; s40, calculating prediction coordinates of the to-be-measured node by using a particle swarm algorithm; the indoor positioning layout structure can be optimized, the positioning precision is improved, and the method is suitable for the field of indoor po