In this paper a pedestrian dead reckoning (PDR) system based on wireless sensor network is proposed, and the RSSI positioning system is used to provide absolute position information. Meanwhile, aiming at the problem that traditional RSSI positioning algorithm is vulnerable to environmental noise, we propose an adaptive Flip-Flop RSSI preprocessing algorithm based on PDR azimuth information and a positioning algorithm of RSSI fingerprint information fusion and dynamic path attenuation index to improve the anti-noise interference capability of the RSSI positioning algorithm. In multi-information fusion particle filtering, aiming at the problem of poor filtering precision and real time ability, we proposed a dynamic interval particle filter algorithm based on PDR information and RSSI localization information. With PDR azimuth information, the algorithm can adaptively control the interval derivative particle number to enhance the filtering real time ability; meanwhile, the building map information, RSSI po...
