| Autor: |
SUN Wenzhou, YIN Xiaodong, ZENG Anmin, BAO Jingyang |
| Jazyk: |
čínština |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Acta Geodaetica et Cartographica Sinica, Vol 48, Iss 9, Pp 1190-1196 (2019) |
| ISSN: |
1001-1595 |
| Popis: |
To solve the problem of seafloor control point (transponder) absolute positioning with a large deviation of the vertical solution, this paper proposes a differential localization algorithm with depth difference and horizontal distance constraint between underwater control points. Firstly, the variation of sound velocity profile is studied. Based on this conclusion, the influence of uncertain sound velocity profile on the ranging error is analyzed. Secondly, according to the change law of ranging error, the corresponding measuring line is designed. And an underwater differential localization algorithm for this survey strategy is proposed. Finally, simulation experiments show that the deviation of the vertical solution is reduced from more than 30 cm to about 10 cm. It implies that the new method can effectively reduce the deviation of the vertical solution of the control point positioning compared with the traditional method (circular sailing). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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