JIN Ming,DING Rong.Detection and Localization of Outlier Nodes in Wireless Sensor Networks via Jointing Temporal and Spatial Residuals[J].ACTA ELECTRONICA SINICA,2023,51(05):1172-1178.
JIN Ming,DING Rong.Detection and Localization of Outlier Nodes in Wireless Sensor Networks via Jointing Temporal and Spatial Residuals[J].ACTA ELECTRONICA SINICA,2023,51(05):1172-1178. DOI: 10.12263/DZXB.20220910.
Detection and Localization of Outlier Nodes in Wireless Sensor Networks via Jointing Temporal and Spatial Residuals
detecting the occurrence of abnormal behaviors and localizing the outlier nodes effectively are the premise for ensuring the reliability of collected data. Traditional detection and localization methods based on graph signal processing cannot achieve high performance in detection and localization simultaneously. To overcome this drawback
this work proposed a detection and localization method which jointly taken advantage of both temporal and spatial residuals of graph signals. Firstly
a graph model based on the correlations of historical data and the distances among nodes was established
and temporal and spatial residuals of high-frequency graph components were employed to detect network anomalies. Then
sensor nodes were divided into two groups using temporal residuals of graph signals
and the nodes in the group with larger temporal residuals were identified as outlier nodes. Numerical simulations based on the data sets of sea level pressure and surface temperature are provided to demonstrate the superior performance of the proposed method. Compared with the two-channel graph filtering method
the proposed method improves the performance by at least 20% in detection probability and 15% in outlier positioning rate
for the cases with an abnormal error of sea level pressure of 4 kPa and abnormal errors of temperature of 5 ℃ and 3 ℃.
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