Journal of Dalian Maritime University >
2020 , Vol. 46 >Issue 4: 24 - 31
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2020.04.004
Analysis of factors influencing the indoor location of WiFi on board based on the angle of arrival
Received date: 2020-06-02
Revised date: 2020-08-03
Online published: 2020-08-03
In order to explore the limitations of the existing WiFi based AOA indoor positioning methods in the ship environment due to the serious multipath effect and noise interference caused by the hull material, cabin space shape and ship motion,on the basis of theoretical analysis of the relevant factors affecting WiFi signal transmission characteristics, the influence of different scenes and navigation conditions on AOA measurement value of large-scale inland river passenger ships was studied through real ship measurement, and the influence degree of hull material, cabin space shape and ship motion on AOA measurement value was analyzed by using data comparison method.The experimental results show that the influence of narrow ship cabin space on AOA measurement accuracy is significantly higher than that of open ship cabin space. When the distance between transmitter and receiver is about 6 m, AOA measurement offset of narrow cabin increases by 15 ° to 30 ° compared with open cabin.At the same time, the research also shows that ship motion or static state has a relatively small impact on the AOA measurement offset in the same experimental scene, and the offset range is generally in the range of 5 ° to 12 °. This conclusion provides a basis for the engineering research and deployment of AOA indoor positioning system.
WANG Guo-yu , LIU Ke-zhong , CHEN Mo-zi , MA Jie , ZENG Xu-ming . Analysis of factors influencing the indoor location of WiFi on board based on the angle of arrival[J]. Journal of Dalian Maritime University, 2020 , 46(4) : 24 -31 . DOI: 10.16411/j.cnki.issn1006-7736.2020.04.004
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