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RSS FeedsSensors, Vol. 19, Pages 2335: Wi-Alarm: Low-Cost Passive Intrusion Detection Using WiFi (Sensors)

 
 

21 may 2019 09:00:03

 
Sensors, Vol. 19, Pages 2335: Wi-Alarm: Low-Cost Passive Intrusion Detection Using WiFi (Sensors)
 




In this paper, we present a WiFi-based intrusion detection system called Wi-Alarm. Motivated by our observations and analysis that raw channel state information (CSI) of WiFi is sensitive enough to monitor human motion, Wi-Alarm omits data preprocessing. The mean and variance of the amplitudes of raw CSI data are used for feature extraction. Then, a support vector machine (SVM) algorithm is applied to determine detection results. We prototype Wi-Alarm on commercial WiFi devices and evaluate it in a typical indoor scenario. Results show that Wi-Alarm reduces much computational expense without losing accuracy and robustness. Moreover, different influence factors are also discussed in this paper.


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40 viewsCategory: Chemistry, Physics
 
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