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RSS FeedsRemote Sensing, Vol. 15, Pages 1657: A Single Array Approach for Infrasound Signal Discrimination from Quarry Blasts via Machine Learning (Remote Sensing)

 
 

19 march 2023 09:32:29

 
Remote Sensing, Vol. 15, Pages 1657: A Single Array Approach for Infrasound Signal Discrimination from Quarry Blasts via Machine Learning (Remote Sensing)
 


Since various phenomena produce infrasound, including both man-made and natural sources, the ever-growing dataflow demands automatic processes via machine learning for signal classification. In this study, we demonstrate a single array approach at the Piszkés-tető (PSZI) infrasound array. Our dataset contains nearly 14,000 manually categorized infrasound detections, processed with the progressive multi channel correlation (PMCC) algorithm from three different sources, such as quarry blasts, storms and signals from a power plant. The dataset was split into a training, a validation and a test subset. Time and frequency domain features as well as PMCC-related features were extracted. Three additional PMCC-related features were constructed in a way to measure the similarity between detections and to be used in single array monitoring. Two different classifiers, support vector machine and random forest, were used for training. Training was performed with three-fold cross validation with grid search. The classifiers were tuned on the training and validation set using the f1 metric (harmonic mean of positive predictive value and true positive rate). Training, validation and testing were performed with and without our three new features that measure similarity between the detections in order to assess their importance in single array monitoring. The selected classifiers reached f1 scores between 0.88 and 0.93. Our results show a promising step toward automatic infrasound event classification.


 
98 viewsCategory: Geology, Physics
 
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Remote Sensing, Vol. 15, Pages 1658: A Performance Analysis of Soil Dielectric Models over Organic Soils in Alaska for Passive Microwave Remote Sensing of Soil Moisture (Remote Sensing)
 
 
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