Binary Information Press
In wireless sensor networks, sensor nodes' correct locations are essential for many applications. Secure localization acts as the effective complement to traditional localization techniques to ensure the accuracy of sensors' location information while there exist attacking nodes. This paper presents a method to tolerate the forge attack during the process of positioning. By selecting optimal beacons with higher reliability as the sources of the location references, the negative effects of the attacker can be weakened. The calculation of trust value is based on the consistency between the time of transmission and the loss of the power.