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Single-Difference Dynamic Positioning Method for GNSS-Acoustic Intelligent Buoys Systems

Published online by Cambridge University Press:  11 November 2019

Mingzhen Xin ,
Fanlin Yang ,
Hui Liu ,
Bo Shi ,
Kai Zhang  and
Min Zhai
Mingzhen Xin
Affiliation:
(College of Geomatics, Shandong University of Science and Technology, Qingdao, China) (Key Laboratory of Surveying and Mapping Technology on Island and Reef, National Administration of Surveying, Mapping and Geoinformation, Qingdao, China)
Fanlin Yang*
Affiliation:
(College of Geomatics, Shandong University of Science and Technology, Qingdao, China) (Key Laboratory of Surveying and Mapping Technology on Island and Reef, National Administration of Surveying, Mapping and Geoinformation, Qingdao, China) (Key Laboratory of Marine Surveying and Charting in Universities of Shandong, Qingdao, China)
Hui Liu
Affiliation:
(College of Geomatics, Shandong University of Science and Technology, Qingdao, China)
Bo Shi
Affiliation:
(College of Geomatics, Shandong University of Science and Technology, Qingdao, China) (Key Laboratory of Surveying and Mapping Technology on Island and Reef, National Administration of Surveying, Mapping and Geoinformation, Qingdao, China) (Key Laboratory of Marine Surveying and Charting in Universities of Shandong, Qingdao, China)
Kai Zhang
Affiliation:
(College of Geomatics, Shandong University of Science and Technology, Qingdao, China) (Key Laboratory of Surveying and Mapping Technology on Island and Reef, National Administration of Surveying, Mapping and Geoinformation, Qingdao, China) (Key Laboratory of Marine Surveying and Charting in Universities of Shandong, Qingdao, China)
Min Zhai
Affiliation:
(College of Geomatics, Shandong University of Science and Technology, Qingdao, China)
*
(E-mail: [email protected])
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Abstract

Systematic error is one of the major factors that affect positioning accuracy owing to the changeable and complex nature of seawater environments. Based on a Global Navigation Satellite System-acoustic intelligent buoys system, whose acoustic array consists of a series of surface buoys, a single-difference method for underwater dynamic positioning is proposed to eliminate systematic error. Positioning configuration optimisation was addressed using dilution of precision (DOP). A simulation of DOP proved that for the single-difference method, a radiation network with a centre-difference reference point was superior to a regular polygon network. The positioning experiment showed that the novel method could effectively eliminate systematic error, improving vertical positioning accuracy from a metre- to a decimetre scale.

Keywords

Underwater PositioningSingle-Difference MethodGIB SystemDilution of PrecisionSystematic Error
Type
Research Article
Information
The Journal of Navigation , Volume 73 , Issue 3 , May 2020 , pp. 646 - 657
Copyright
Copyright © The Royal Institute of Navigation 2019

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