In order to minimize influence of measurement error of RSSI on localization precision of node

propose a centroid localization algorithm based on Gaussian weighting correction.Firstly

large bias value of RSSI is filtered by Gaussian function

then

remained RSSI value is weighted calculation to obtain optimized RSSI measurement value

and use measured RSSI value to calculate distance between anchor nodes and unknown nodes

then coordinates of anchor node is weighting by using centroid localization algorithm to calculate unknown node location coordinate.Simulation experiments show that the algorithm improves 3%

6

%on the issue of localization localization coverage rate and reduces at least 4%in average localization error compared with centroid localization a

lgorithm based on RSSI

and it is a higher positioning precision algorithm.