A distributed node localization algorithm based on mobile coordinate systems is presented.It is irrelevant to distance.The moving anchor node is set as the origin to build the coordinate system

while unknown nodes counting on the neighboring anchor nodes to locate itself in the temporary coordinate system.Unknown region of itself is continuously narrowed by finding the public set that picked in the certain location of different coordinate systems.By the centroid algorithm

the location coordinate of unknown nodes is calculated.The simulation results show that the new algorithm not only has high positioning precision

but also costs moderately.