Indoor positioning method for goal nodes of mobile social network

The invention discloses an indoor positioning method for goal nodes of a mobile social network. The indoor positioning method comprises the following steps of: respectively placing at least three access points AP in different positions, using known coordinate points as anchor nodes, obtaining a relational model between signal strengths and distances of all the anchor points, obtaining the signal strength value of each signal by using a mobile smart terminal, selecting the anchor nodes with the strongest signal strengths as the nodes needing to particle in positioning, respectively putting the three anchor nodes into the relational model between the RSSI (Received Signal Strength Indication) and the distances of the corresponding anchor nodes, and working out the distances from the mobile smart terminal to the corresponding anchor nodes; and working out the position coordinates of the mobile smart terminal by using an angular positioning algorithm. According to the indoor positioning method, the positioning of mobile nodes can be realized in a mobile social network environment, the impact of the environment on positioning is overcome to a certain extend, thereby the positioning accuracy is improved, and the positioning requirement can be basically satisfied in the mobile social network environment.