Research on positioning error propagation of wireless sensor networks
Sensor localization is one of the key technologies of wireless sensor networks.This paper establishes an equivalent measurement error model based on radio interferometric positioning system(RIPS),and investigates the node positioning error and error propagation caused by the position error of anchor nodes in practical situations.Simulation result shows that the position error of anchor nodes will reduce the positioning accuracy of unknown nodes.On this basis,research wireless sensor network locali-zation node allocation strategy considering the influence of anchor node position error propagation,so as to find the optimal anchor node to minimize positioning error during the positioning process.