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Journal of Sensors
Volume 2016, Article ID 6928961, 11 pages
http://dx.doi.org/10.1155/2016/6928961
Research Article

Positioning Error Analysis of Ranging-Mode Using AIS Signals in China

Information Science and Technology College, Dalian Maritime University, Dalian 116026, China

Received 24 March 2016; Revised 2 August 2016; Accepted 16 August 2016

Academic Editor: Jose R. Martinez-de Dios

Copyright © 2016 Kai Zheng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In order to provide resilient position, navigation, and time (PNT) information for -Navigation, the ranging-mode (R-Mode) positioning using automatic identification system (AIS) signals is encouraged. As the accuracy is the key for the positioning system, this paper investigates the position error of the R-Mode positioning based on AIS shore-based station in China. The measurement errors of Gaussian filtered minimum shift keying (GMSK) demodulation based on carrier phase locking loop are investigated in theory. The dilution of precision (DOP) for time of arrival (TOA) and time difference of arrival (TDOA) used in R-Mode positioning of AIS is discussed in two measurement mechanisms. The positioning error distributions in the North, East, and South Sea regions of China based on the existing AIS shore-based stations are evaluated. The positioning accuracy is at the meter level in the most traffic dense areas to meet the requirements for vessel navigation.