关键词: 非视距传播, 圆盘散射模型, 到达时间, 到达角, 定位

Abstract: Under the NLOS（Non-Line-Of-Sight propagation） environments in wireless sensor networks, using the Disk of Scatterers Model（DSM） to construct and introduce the NLOS errors is line with the actual multi-path communication scenarios. A localization method using TOA（Time Of Arrival） and AOA（Angle Of Arrival） measured by the anchor nodes based on the DSM is proposed in this paper. It models the DSM as two models, that is unknown node-oriented disk of scatterers model and anchor node-oriented disk of scatterers model. It proposes the location methods for each model. Computer simulations have been done to show that the proposed location methods can restrain NLOS error effectively, and have better location accuracy than the traditional location algorithms. Meanwhile, the proposed location methods can not be affected by the deterioration of the positioning error when increasing the radius of DSM and are applicable to a wide range.

Key words: Non-Line-Of-Sight（NLOS）, Disk of Scatterers Model（DSM）, Time Of Arrival（TOA）, Angle Of Arrival（AOA）, location