Abstract:

A three dimension weighted centroid localization algorithm with RSSI as the weighted factors is introduced for the poor accuracy of wireless sensor network RSSI weighted centroid localization algorithm.Adaptive narrowing of location areas is performed through RSSI,and a three-dimensional sphere positioning model is constructed according to the selected optimal reference nodes.It is shown by simulation experiments that the improved algorithm achieves better precision and stability than the traditional weighted centroid algorithm.

Key words: adaptive;optimal reference node;intersection point coordinate;RSSI weighted factor