关键词: 非视距传播, 定位, 锚节点, 散射体圆盘模型, 遗传算法

Abstract: One localization method based on the genetic algorithm is proposed in the Unknown Node-oriented Disk of Scatterers Model （UN-DSM） environments for wireless sensor networks. Firstly, the method uses the TOA （Time Of Arrival） and AOA （Angle Of Arrival） measurement information to estimate the positions of scatterers which located in the areas around the estimated node. Secondly, it selects the TOA information sets which consider existing less errors and performs parameters’ value modification. Then the math function is built after the value modification. Finally, it solves the non-linear function by genetic algorithm to get the position of the unknown node. Simulation results show that the proposed location method can restrain NLOS error effectively, and has better location accuracy than the traditional location methods with good robustness.

Key words: Non-Line-Of-Sight propagation（NLOS）, location, anchor node, disk of scatterers model, genetic algorithm