Uniformity of anchor nodes distribution has a very important impact on localization precision in wireless sensor networks（ WSNs）

but related research is limited

in order to solve this problem

relationship between anchor node distribution and localization performance of WSNs is analyzed. Firstly

related concept of anchor nodes uniformly distribution is proposed

and corresponding network system model is designed and set up

then simulation experiments are carried out to test relationship between performance of centroid algorithm

DV-Hop algorithm

smallest enclosing circle algorithm and anchor node distribution. Results show that all localization algorithms are effected by anchor node distribution

centroid algorithm is the most sensitive to uniformity of anchor node

the next is DV-Hop algorithm

smallest enclosing circle algorithm is the most insensitive to uniformity of anchor nodes

the analysis results has guiding significance for applications of WSNs.