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Semi-parametric Adjustment Model Methods for Positioning of Seafloor Control Point 被引量:2
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作者 Wenzhou SUN Xiaodong YIN +1 位作者 jingyang bao Anmin ZENG 《Journal of Geodesy and Geoinformation Science》 2020年第1期85-92,共8页
This paper focus on solving the problem of seafloor control point absolute positioning with low vertical accuracy based on the survey ship sailing circle. The method of dealing with the systematic error based on a sem... This paper focus on solving the problem of seafloor control point absolute positioning with low vertical accuracy based on the survey ship sailing circle. The method of dealing with the systematic error based on a semi-parametric adjustment model was proposed. Firstly, the influence of sound velocity change on ranging error is analyzed. Secondly, a semi-parametric adjustment model for determining three-dimensional coordinates of seafloor control points was established. And respectively proposed solutions under two different conditions, the observation duration is an integral multiple or non-integer multiple of the long-period term of the ranging error. The simulation experiment shows that this method can obviously improve the accuracy of vertical solution of seafloor control point compared with the difference technique and the least-squares method when internal waves exist and observation duration is less than an integer multiple of the long-period term of the ranging error. 展开更多
关键词 SEMI-PARAMETRIC adjustment MODEL SAILING circle POSITIONING of SEAFLOOR control point intersection POSITIONING MODEL systematic RANGING error
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