Indoor passive target positioning method based on received signal strength

The invention discloses an indoor passive target positioning method based on received signal strength, and belongs to the technical field of target detection and tracking in a wireless network. Considering the situation that a link is blocked by a target, the method is mainly applied to detection of links with a shadow fading phenomenon before positioning. The method comprises the steps of node arrangement, measurement of change values of the received signal strength of all the links when a monitored area is free of targets and a target enters the monitored area, time domain detection for excluding some mutant links without the shadow fading phenomenon, space domain detection for excluding the links with the shadow fading phenomenon far away from the actual position of the target, and estimation of the position of the target according to the links with the shadow fading phenomenon. The indoor passive target positioning method based on received signal strength is easy and flexible to implement; moreover, in co