Semi-parametric Adjustment Model Methods for Positioning of Seafloor Control Point  

作　　者：Wenzhou SUN Xiaodong YIN Jingyang BAO Anmin ZENG 

机构地区：[1]Office for Establishing Zhangzhou Base,National Ocean Technology,Xiamen 361007,China [2]School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China [3]State Key Laboratory of Geo-information Engineering,Xi’an 710054,China

出　　处：《Journal of Geodesy and Geoinformation Science》2020年第1期85-92,共8页测绘学报（英文版）

基　　金：The National Key Research and Development Program of China(No.2016YFB0501701);The National High-tech Research and Development Program of China(No.2013AA122501);National Natural Science Foundation of China(Nos.41876103;41874016)。

摘　　要：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.

关 键 词：SEMI-PARAMETRIC adjustment MODEL SAILING circle POSITIONING of SEAFLOOR control point intersection POSITIONING MODEL systematic RANGING error 

分 类 号：P229[天文地球—大地测量学与测量工程]