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Closely Coupled Positioning Technique in Urban Environments  

Hwang, Yu Min (광운대학교 전자융합공학과 유비쿼터스시스템연구실)
Oh, Ju Young (광운대학교 전자융합공학과 유비쿼터스시스템연구실)
Kim, Yoon Hyun (광운대학교 전자융합공학과 유비쿼터스시스템연구실)
Kim, Jin Young (광운대학교 전자융합공학과 유비쿼터스시스템연구실)
Kim, Ha Sung (KT 종합기술원 유무선네트워크연구소)
Jee, Gyu-In (건국대학교 전자공학부)
Publication Information
Journal of Satellite, Information and Communications / v.7, no.2, 2012 , pp. 104-109 More about this Journal
Abstract
Currently, GPS(Global Positioning System) is used to find user location information. However, in some cases, especially in urban environments, we receive unreliable location information deu to multipath fading. In order to resolve this problem, we propose a closely coupled positioning technique where GPS signal is combined with QZSS signal. Also we proposed and analyze a combining algorithm of GNSS and Wi-Fi signals to get closely coupled location information by referring AP information. Finally, this paper proposes a combined GPS/QZSS/Wi-Fi navigation algorithm to improve navigation performance, and it is verified by testing of car deriving according to availability and accuracy standard.
Keywords
GNSS; GPS; QZSS; Wi-Fi; LBS;
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