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Table 3 Estimation errors and execution times of the proposed method and the HT-based estimation technique for each experimental data set.

From: An Entropy-Based Propagation Speed Estimation Method for Near-Field Subsurface Radar Imaging

Experiment/metric Entropy error Entropy execution time HT error HT execution time
1 −2.45 × 107 m/s 13.1 sec 3.85 × 107 m/s 90.1 sec
2 −1.15 × 107 m/s 12.6 sec 3.06 × 107 m/s 89.45 sec
3 2 × 105 m/s 13.3 sec 3.55 × 107 m/s 91.6 sec
4 1 × 106 m/s 15.1 sec 41.1 × 107 m/s 90.78 sec