Research Article
Error Self-Calibration Algorithm for Acoustic Vector Sensor Array
Table 2
Error self-calibration result of vector sensor array.
| | Vector | Actual amplitude error | Calibration amplitude error | Relative error (%) | Actual phase error (rad) | Calibration phase error (rad) | Relative error (%) |
| 1 | Pressure | 1 | 1 | 0.00 | 0 | 0 | 0.00 | Velocity | 0.6603 | 0.6514 | 1.35 | -1.3566 | -1.3586 | 0.15 | Velocity | 1.4775 | 1.487 | 0.64 | 0.7286 | 0.7283 | 0.04 |
| 2 | Pressure | 0.9364 | 0.9324 | 0.24 | 0.6072 | 0.6315 | 4.00 | Velocity | 1.3247 | 1.3076 | 1.29 | -0.8283 | -0.8023 | 3.14 | Velocity | 1.2993 | 1.3060 | 0.52 | 2.8876 | 2.9122 | 0.85 |
| 3 | Pressure | 0.9073 | 0.9031 | 0.07 | 0.9191 | 0.9728 | 5.84 | Velocity | 0.0096 | 0.0095 | 1.04 | 0.4058 | 0.4379 | 7.91 | Velocity | 1.1815 | 1.1892 | 0.65 | 1.9162 | 1.9696 | 2.79 |
| 4 | Pressure | 1.352 | 1.3486 | 0.25 | -2.4557 | -2.3770 | 3.20 | Velocity | 0.6237 | 0.6157 | 1.28 | -0.0911 | -0.0812 | 10.87 | Velocity | 0.9915 | 0.9966 | 0.51 | -0.0247 | -0.0223 | 9.72 |
| 5 | Pressure | 0.7792 | 0.7786 | 0.0800 | 0.1999 | 0.2072 | 3.65 | Velocity | 1.8507 | 1.8257 | 1.35 | -1.0383 | -0.9320 | 10.24 | Velocity | 0.9847 | 0.9912 | 0.66 | 0.5294 | 0.5365 | 1.34 |
| 6 | Pressure | 1.102 | 1.0992 | 0.25 | -2.2171 | -2.0839 | 6.01 | Velocity | 0.4761 | 0.47 | 1.28 | 0.1074 | 0.1011 | 5.87 | Velocity | 0.6323 | 0.6355 | 0.51 | 0.4389 | 0.4722 | 7.59 |
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