An Outlier Detection Method Based on Mahalanobis Distance for Source Localization

作者：Yan, Qingli^*; Chen, Jianfeng; De Strycker, Lieven

来源：Sensors (Switzerland), 2018, 18(7): 2186.

DOI：10.3390/s18072186

• angle of arrival
• source localization
• outlier detection
• Mahalanobis distance
• unreliable nodes

This paper addresses the problem of localization accuracy degradation caused by outliers of the angle of arrival (AOA). The problem of outlier detection of the AOA is converted into the detection of the estimated source position sets, which are obtained by the proposed division and greedy replacement method. The Mahalanobis distance based on robust mean and covariance matrix estimation method is then introduced to identify the outliers from the position sets. Finally, the weighted least squares method based on the reliable probabilities and distances is proposed for source localization. The simulation and experimental results show that the proposed method outperforms representative methods when unreliable AOAs are present.

• 出版日期2018-7
• 单位西北工业大学