Distributed Angle Estimation for Wireless Sensor Network Localization

A novel distributed angle estimation method for wireless sensor network localization is proposed in this paper. The anchor emits two linear frequency modulation waves simultaneously using its equipped two antenna elements, while the angle of departure of the emitted waves can be estimated independently at each sensor. The method only relies on radio transceivers and requires no time or carrier frequency synchronization between the transceivers. It is also shown that the method can be improved to applied to mobile networks. Besides, the performance analysis and simulations are both presented to evaluate the proposed approach.