High-robustness indoor positioning method and device

• Main Authors: SHEN DAN, WANG SHANGYANG, ZHU XIANGWEI, HE SHAOFENG, OUYANG MINGJUN, PENG DINGWEI, YUAN XUELIN
• Format: Patent
• Language: Chinese; English
• Published: 07.05.2024
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING; TRANSMISSION; WIRELESS COMMUNICATIONS NETWORKS

The invention discloses a strong-robustness indoor positioning method and device, and the method comprises the steps: obtaining a plurality of AP nodes, and enabling each AP node to be an AP node with an RSSI value smaller than a preset power threshold value; after calculating the entropy value of each AP node by using a nonlinear function, extracting a preset number of AP nodes as target nodes according to the entropy value; and a loss function is constructed by using a circle equation of a preset number of target nodes, the minimum value of the loss function is solved, the positioning coordinates are obtained, and the circle equation is a matrix equation of a circle constructed by taking the target nodes as the circle center. According to the method, the condition of positioning deviation caused by mismatching of the fingerprint database and the online stage can be avoided, the positioning precision can be improved, and the method can adapt to the time variation of the channel so as to screen the AP nodes w