Robust WLAN Device-free Passive motion detection

Ahmed E. Kosba, Ahmed Saeed, Moustafa Youssef
2012 2012 IEEE Wireless Communications and Networking Conference (WCNC)  
WLAN Device-free Passive (DfP) localization is an emerging technology that uses the widely deployed WiFi networks for detecting and localizing human presence within indoor environments. This paper presents an accurate and low-overhead technique for detecting human presence based on non-parametric statistical anomaly detection. This technique constructs profiles capturing the signal strength characteristics when no human is present within the area of interest and uses these profiles to identify
more » ... ny anomalies in the signal strength due to human motion activity. To adapt to changes in the environment, the constructed profiles are regularly updated by signal strength readings with low anomaly probability. Exponential smoothing is then used to reduce the effect of noisy readings in order to enhance the detection accuracy. Our work proved to be more robust and accurate than other DfP detection techniques, achieving a high detection accuracy of 4.7% miss detection rate and 3.8% false alarm rate, while requiring minimal deployment overhead.
doi:10.1109/wcnc.2012.6214375 dblp:conf/wcnc/KosbaSY12 fatcat:wrvpsr5g4rbqvcx7sszcnlrngy