无线传感器网络SDV—Hop安全定位算法

onventional DV-Hop localization algorithm has low positioning accuracy and can be interferenced and attacked easily.A new security localization algorithm for wireless sensor network SDV-Hop is proposed in this paper.Firstly, an addition of a symmetric password-based encryption and authentication programs has been used to defend against spoofing attacks. Secondly, Against the wormhole attack and block attacks,an average jump distance estimation algorithm based on the safe handling has been introducted. By the judgments and comparative of jumping distance , suitable distance value for each hop can be selected,so the error caused by wormhole attacks and errors can be avoided effectively. Simulation results show that the security algorithm not only has high positioning accuracy but also can effectively prevent and resist external attacks.