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Jamming attacks can severely disrupt the communications in wireless sensor networks (WSNs). Accurate jammer localization is crucial for the implementation of active anti-jamming strategies. Existing localization methods primarily target the proactive jammer equipped with an omnidirectional antenna within the WSN area, which limits their effectiveness in more complex scenarios. To bridge this capability gap, an accurate localization method based on signal strength map (ALSSM) is proposed to locate the jammer, regardless of whether it is proactive or reactive, and irrespective of its antenna type or location. The ALSSM method constructs a jamming signal strength (JSS) map using JSSs collected by sensor nodes via a deception strategy. This map is then utilized to formulate an evaluation metric to quantify localization estimation errors. Therefore, the localization task is transformed into an optimization problem. This method is convenient to implement, as it requires no additional dedicated hardware, and the collected JSS data can be integrated into the WSN’s normal data transmission process. Simulation and experimental results demonstrate that the ALSSM method can accurately locate the jammer, regardless of whether it is directional or omnidirectional, and irrespective of its deployment inside or outside the WSN area.
Jia et al. (Tue,) studied this question.