Study of stability and efficiency of the transponder‒array constraint method for the GPS‒acoustic observation
For the precise GPS‒acoustic seafloor positioning, we evaluated the stability and the efficiency of the transponder‒array constraint method. Constraining the geometry of the seafloor transponder array via the multi‒epoch analysis enables us to estimate more precise position of the seafloor sites. The accuracy of the positioning should depend on the accuracy of the geometry of the array. In this study, we found that, though the geometry of the array converges to the probable one as the number of epoch used in the multi ‒epoch analysis increases, the convergence rate strongly depends on the seafloor site. It suggests that we should estimate the accuracy of the geometry for each site. Moreover, we revealed the strong relationship between the horizontal projected areas of the transponder array and the vertical deviations of the estimated position. This suggests that the sound speed should be corrected by constraining the geometry of the transponder array. The results will lead to the evaluation of the efficiency of the transponder‒array constraint method.
| Main Authors: | , |
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| Format: | Journal Contribution biblioteca |
| Language: | Japanese |
| Published: |
2015
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| Online Access: | http://hdl.handle.net/1834/15574 |
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