Table 2 SNR (dB) values at the different depths
Depth(mm) | DAS | DAS+CF | MV | MV+CF | DAS+HRCF, |
|---|---|---|---|---|---|
25 | 48.9 | 66.8 | 59.8 | 80.6 | 90.9 |
30 | 46.6 | 64.5 | 57.2 | 77.9 | 87.9 |
35 | 44.2 | 62.0 | 54.8 | 75.4 | 85.4 |
40 | 42.4 | 60.2 | 53.2 | 73.9 | 84.0 |
45 | 40.8 | 58.5 | 51.2 | 71.8 | 81.6 |
50 | 39.3 | 57.2 | 49.5 | 70.32 | 79.8 |
55 | 37.8 | 55.4 | 47.8 | 68.3 | 77.7 |