Table I.
Relative bias, coefficient of variation (COV), and root mean squared error (RMSE) of acoustic pulse parameters for FPIFO hydrophones expressed as percentages, obtained using the traditional scaling method (“Scale”) and deconvolution based on three forms of sensitivity: direct complex measurement (“Direct”), magnitude (“Mag”), and phase estimated from minimum phase principle (“MP”). G: Gaussian global low-pass filter exp(−f2/2σ2) with σ = 35 MHz. W: Wiener Filter. R: Rectangular rarefactional low-pass filter with ΔF = 20 MHz, corresponding to ΔT = 0.05 μs.
| Method | Filters | p+ | p− | PII | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Bias | COV | RMSE | Bias | COV | RMSE | Bias | COV | RMSE | ||
| Scale | 163 | 18 | 169 | 113 | 53 | 161 | 126 | 20 | 134 | |
| Scale | G | 108 | 13 | 111 | 81 | 51 | 123 | 97 | 19 | 104 |
| Direct | G | 24 | 11 | 27 | 48 | 21 | 58 | 33 | 17 | 40 |
| Direct | G, W | 24 | 11 | 27 | 48 | 22 | 58 | 33 | 17 | 40 |
| Direct | G, R | 24 | 11 | 27 | 15 | 11 | 20 | 29 | 16 | 36 |
| Mag | G, R | 38 | 14 | 41 | 11 | 29 | 35 | 29 | 16 | 36 |
| MP | G, R | 42 | 12 | 46 | 3 | 24 | 25 | 29 | 16 | 36 |