Installation of a seafloor geodetic observation system on the S/V Koyo
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Author
Yoshida, ShigeruDate
2022
Metadatos
Mostrar el registro completo del ítemAbstract
The Hydrographic and Oceanographic Department, Japan Coast Guard (JHOD), has installed an acoustic transducer on all of its survey vessels (excluding the S/V Tenyo) to conduct GNSS-Acoustic ranging (GNSS-A) observations. JHOD also installed a seafloor geodetic observation system on the new S/V Koyo(4,000 tons) commissioned in March 2021 to improve the efficiency of its GNSS-A observations. In this article, we report on the outline of the seafloor geodetic observation system installed on the S/V Koyo, the survey method and the resulting relative position between the GNSS antenna and the transducer, and the result of the test observation. The result of the test observation indicated that the horizontal components of the seafloor site position observed by the S/V Koyo agree with the trend of the time series estimated from our regular GNSS-A observations. On the other hand, the vertical component indicated the possibility of a positioning bias, which would necessitate further evaluation by continuing the GNSS-A observations using the S/V Koyo.Journal
Report of Hydrographic and Oceanographic ResearchesIssue/Article Nr
60Page Range
pp.40-50Resource/Dataset Location
https://www1.kaiho.mlit.go.jp/GIJUTSUKOKUSAI/KENKYU/report/article.html#rhr60