Abstract-Three-dimensional accurate positioning algorithm, using RSSI-based (Received Signal Strength Indication) positioning method, which constructs an attenuation model of wireless signal between beacon node and unknown node in three-dimensional space, and compensates for the loss of wireless signal on the basis of their material, thickness and other factors when there are obstacles or walls being in the process of signal transmission. Meanwhile, the error revision algorithm is used to improve the positioning accuracy. The update interval and transmitting power can be changed adaptively according to the movement speed of unknown node and the distance to beacon node, so that the wireless node's life cycle will be extended greatly. Moreover, it will be able to complete positioning even a few beacon nodes fail in some cases. Furthermore, the location information provides a premise and basis for the research on geographic routing algorithm. Index Terms-wireless sensor networks, three-dimensional accurate positioning algorithm, received signal strength indication
In REF , the loss of wireless signal strength between the object and an anchor node is converted to the distance first, and then the maximum-likelihood estimation method is used to calculate the 3D coordinate of the object.
Three-dimensional Accurate Positioning Algorithm based on Wireless Sensor Networks
JCP
JCP
Computer Science