Abstract: The mobile anchor localization is more practical method in wireless sensor network node localization, it need to consider the problem about moving path, if plan the effective and reasonable path, it can obtain higher location accuracy. Take the sensor nodes as figure vertexs, then use the thoughts of TSP and ant colony algorithm to search for an optimal path. hhrough the theoretical analysis and simulations show that formed paths can cover the entire network and adap to the random distribution node localization in wireless sensor network.

Key words: WSN, Localization, Mobile anchor, Path planning, Ant colony algorithm