RSSI-based three-dimensional space positioning method, apparatus and device, and storage medium

The embodiment of the invention provides a three-dimensional space positioning method, device and equipment based on RSSI (Received Signal Strength Indicator) and a storage medium, and relates to the technical field of indoor positioning. The three-dimensional space positioning method comprises steps S1 to S5. The method comprises the following steps: S1, acquiring RSSI signal values sent by a plurality of positioning anchor nodes scanned by a to-be-positioned device; and S2, according to the RSSI signal value, through a pre-constructed three-dimensional space Newton-Raphson iterative model, obtaining a predicted distance between the to-be-positioned device and the plurality of positioning anchor nodes. And S3, taking the positioning anchor node as a sphere center, taking the predicted distance between the to-be-positioned equipment and the positioning anchor node as a radius, constructing spheres, and adjusting the state between the spheres to be intersected. And S4, constructing an equipartition point set P