Affiliations: School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China
Correspondence:
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Corresponding author. Mu Zhou, School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China. E-mail: zhoumu@cqupt.edu.cn.
Abstract: At present, indoor intrusion detection technologies based on WLAN are widely applied to protect the privacy of users and have a robust anti-interference ability under the condition of the Non-line-of-sight (NLOS), which become the mainstream topics of domestic and foreign studies. Most of the existing researches rely on the signal strength to train heuristic models, while the relationship between intrusion targets and signal fluctuations is not explored fully. In this circumstance, this paper proposes a novel indoor intrusion detection method based on fuzzy membership degree and Dempster-Shafer Theory (DST). First of all, the correlation between WLAN signal fluctuation features and locations of intrusion targets are converted into DST mass function by fuzzy membership. Second, the reliability values from each MP are combined to select reliable reference positions by using the reliability combination rules in DST. Finally, the positions of the intrusion target are calculated based on the weighted maximum likelihood and centroid method. Finally, the related experimental results show that the proposed approach can not only ensure the high accuracy of intrusion detection but also obtain ideally accurate locations of the intrusion target.
Keywords: Passive intrusion detection, indoor WLAN, fuzzy membership, Dempster-Shafer theory, weighted maximum likelihood and centroid method
