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

doi:10.11947/j.JGGS.2020.0109

Journal of Geodesy and Geoinformation Science ›› 2020, Vol. 3 ›› Issue (1): 85-92.doi: 10.11947/j.JGGS.2020.0109

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

Wenzhou SUN¹,Xiaodong YIN¹,Jingyang BAO²,Anmin ZENG³

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

Received:2018-04-27 Accepted:2018-09-10 Online:2020-03-20 Published:2020-03-09
About author:Wenzhou SUN, male, PhD, major in geodsey. E-mail: 1519374228@qq.com
Supported by:
The National Key Research and Development Program of China(2016YFB0501701);The National High-tech Research and Development Program of China(2013AA122501);National Natural Science Foundation of China(41876103);National Natural Science Foundation of China(41874016)

Abstract

Abstract:

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.

Key words: semi-parametric adjustment model; sailing circle; positioning of seafloor control point; intersection positioning model; systematic ranging error

Wenzhou SUN,Xiaodong YIN,Jingyang BAO,Anmin ZENG. Semi-parametric Adjustment Model Methods for Positioning of Seafloor Control Point[J]. Journal of Geodesy and Geoinformation Science, 2020, 3(1): 85-92.

Figures/Tables 7

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References 23

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Cases	Methods	\|dx\|			\|dy\|				\|dz\|
Cases	Methods	mean	STD	MSE		mean	STD	MSE		mean	STD	MSE
Non-internal wave	1	0.0977	0.0796	0.0153	0.1052		0.0707	0.0156	2.5282		0.0703	6.3960
	2	0.0763	0.0461	0.0077	0.0655		0.0504	0.0066	1.2616		0.6442	1.9653
	3	0.0519	0.0432	0.0044	0.0900		0.0658	0.0120	2.5235		0.0680	6.3723
Internal wave	1	0.1024	0.0942	0.0186	0.0637		0.0579	0.0071	2.5250		0.0631	6.3791
	2	0.0659	0.0667	0.0084	0.0714		0.0368	0.0063	14.7452		1.7700	220.2689
	3	0.0850	0.0572	0.0102	0.0794		0.0550	0.0091	2.5349		0.0625	6.4294

Cases	Methods	\|dx\|			\|dy\|				\|dz\|
Cases	Methods	mean	STD	MSE		mean	STD	MSE		mean	STD	MSE
Non-internal wave	1	0.2969	0.1287	0.1030	0.2154		0.1112	0.0575	16.0231		0.2389	256.7917
	2	0.2017	0.1307	0.0561	0.1742		0.1065	0.0405	1.6795		2.3154	5.2866
	3	0.2891	0.2086	0.1227	0.4326		0.2197	0.2306	2.2259		1.9579	8.4046
Internal wave	1	0.4667	0.2686	0.2827	0.2094		0.2148	0.0854	15.9165		0.1811	253.3657
	2	0.4495	0.1601	0.2251	0.2398		0.1230	0.0711	17.3955		9.8092	389.2020
	3	0.4608	0.1514	0.2329	0.2280		0.1659	0.0768	4.2581		2.8676	25.5326

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

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