Research Article
Optimal Calibration Method of PIGA’s Orthogonal Poses for Gravity Field Testing
Table 5
Simulation results of two different sequency calibration schemes for 42-position test.
| | Error coefficient | Calibration result | Absolute error | Uncertainty | | Equal angle | Equal acceleration | Equal angle | Equal acceleration | Equal angle | Equal acceleration |
| | (rad/s) | 3.999 × 10−4 | 3.997 × 10−4 | 1.0 × 10−7 | 3.0 × 10−7 | 7.1 × 10−7 | 7.1 × 10−7 | | (rad/s/g) | 0.5500051 | 0.5500021 | 5.1 × 10−6 | 2.1 × 10−6 | 2.9 × 10−6 | 3.2 × 10−6 | | (rad/s/g2) | 4.9 × 10−6 | 6.1 × 10−6 | 1.0 × 10−7 | 1.1 × 10−6 | 1.1 × 10−6 | 1.5 × 10−6 | | (rad/s/g2) | 3.6 × 10−6 | 4.9 × 10−6 | 6.0 × 10−7 | 1.9 × 10−6 | 3.4 × 10−6 | 4.1 × 10−6 | | (/g) | 6.4 × 10−6 | 1.6 × 10−6 | 3.4 × 10−6 | 1.4 × 10−6 | 1.1 × 10−6 | 1.3 × 10−6 | | ttotal (min) | 116.0 | 172.5 | | | | |
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