Research Article
Research and Construction of a Global Hexagonal Marine Gravity Gradient Reference Map for Navigation
Table 6
Statistics of the grid matching positioning error.
| Track | Matching points | Grid | Resolution | Maximum (km) | Minimum (km) | Average (km) | Std (km) |
| 1 | 519 | Hexagon | 11th level | 4.5587 | 0.2973 | 2.0117 | 1.2539 | Quadrilateral | 2 | 5.4560 | 0.2569 | 2.3741 | 1.5116 | Hexagon | 12th level | 3.9888 | 0.1045 | 1.5601 | 0.8121 | Quadrilateral | 1 | 4.7149 | 0.1294 | 1.8855 | 1.0197 | Hexagon | 13th level | 2.4434 | 0.0345 | 0.9136 | 0.4129 | Quadrilateral | 30 | 3.6127 | 0.0311 | 1.1382 | 0.5297 |
| 2 | 505 | Hexagon | 11th level | 4.7454 | 0.3128 | 1.9120 | 1.3632 | Quadrilateral | 2 | 5.6110 | 0.2812 | 2.2575 | 1.6521 | Hexagon | 12th level | 3.8101 | 0.1463 | 1.5581 | 0.9199 | Quadrilateral | 1 | 4.3525 | 0.2130 | 1.9024 | 1.1242 | Hexagon | 13th level | 2.5012 | 0.1038 | 0.9004 | 0.4008 | Quadrilateral | 30 | 3.5649 | 0.1249 | 1.1332 | 0.5041 |
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