Figure 4
From: Realistic Subsurface Anomaly Discrimination Using Electromagnetic Induction and an SVM Classifier
A typical cell from the Camp Sibert EM-63 blind test, no. 7 in this case, consists of a square plot of side 5 m. The white dots show the measurement points distributed on a 668-point grid; the separation between rows is about 50 cm and that between consecutive points is some 5 cm. The contour plots show the measured (left column) and HAP/NSMS-predicted (middle column) near-field distributions for this cell, as well as the mismatch between the two (right column), for two time gates. The first time channel (top row) is taken 191 μs after shutdown; the 15th (bottom) is centered at 2.72 ms.