Research on Security Location of Malicious Node Filtering for Environmental Monitoring Sensor Networks

In order to solve the problem that the positioning accuracy is reduced due to the difficult filtering of malicious nodes in wireless sensor networks. Aiming at the reason that the traditional DV-HOP positioning algorithm is vulnerable, an improved DV-HOP algorithm is proposed. The algorithm can combine multiple communication radii to reduce the hop error of the anchor node in communication with other nodes, and make the positioning more accurate by the hop-weighted hyperbolic algorithm. Further, consistency checking mechanism between packet information aggregator implemented filtering malicious nodes. The simulation results show that the improved DV-HOP algorithm has significantly higher positioning accuracy than the traditional DV-HOP algorithm under the condition that the detection mechanism filters malicious nodes.