Ionosphere-Constrained Single-Frequency PPP with an Android Smartphone and Assessment of GNSS Observations

With the development of Global Navigation Satellite System (GNSS) and the opening of Application Programming Interface (API) of Android terminals, the positioning research of Android terminals has attracted the attention of GNSS community. In this paper, three static experiments were conducted to an...

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Published inSensors (Basel, Switzerland) Vol. 20; no. 20; p. 5917
Main Authors Wang, Guangxing, Bo, Yadong, Yu, Qiang, Li, Min, Yin, Zhihao, Chen, Yu
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 20.10.2020
MDPI
Subjects
Accuracy
Android smartphones
BDS
Experiments
Global positioning systems
GNSS raw observation
GPS
Ionosphere
multipath
Noise
Precise Point Positioning (PPP)
Satellites
Smartphones
Values
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Abstract With the development of Global Navigation Satellite System (GNSS) and the opening of Application Programming Interface (API) of Android terminals, the positioning research of Android terminals has attracted the attention of GNSS community. In this paper, three static experiments were conducted to analyze the raw GNSS observations quality and positioning performances of the smartphones. For the two experimental smartphones, the numbers of visible satellites with dual-frequency signals are unstable and not enough for dual-frequency Precise Point Positioning (PPP) processing all through the day. Therefore, the ionosphere-constrained single-frequency PPP model was employed to improve the positioning with the smartphones, and its performance was evaluated and compared with those of the Single Point Positioning (SPP) and the traditional PPP models. The results show that horizontal positioning accuracies of the smartphones with the improved PPP model are better than 1 m, while those with the SPP and the traditional PPP models are about 2 m.
AbstractList With the development of Global Navigation Satellite System (GNSS) and the opening of Application Programming Interface (API) of Android terminals, the positioning research of Android terminals has attracted the attention of GNSS community. In this paper, three static experiments were conducted to analyze the raw GNSS observations quality and positioning performances of the smartphones. For the two experimental smartphones, the numbers of visible satellites with dual-frequency signals are unstable and not enough for dual-frequency Precise Point Positioning (PPP) processing all through the day. Therefore, the ionosphere-constrained single-frequency PPP model was employed to improve the positioning with the smartphones, and its performance was evaluated and compared with those of the Single Point Positioning (SPP) and the traditional PPP models. The results show that horizontal positioning accuracies of the smartphones with the improved PPP model are better than 1 m, while those with the SPP and the traditional PPP models are about 2 m.
Author Wang, Guangxing
Yu, Qiang
Li, Min
Chen, Yu
Bo, Yadong
Yin, Zhihao
AuthorAffiliation 1 School of Geography and Information Engineering, China University of Geosciences, Wuhan 430078, China; wanggx@cug.edu.cn (G.W.); Boyadong@cug.edu.cn (Y.B.); yuqiang@cug.edu.cn (Q.Y.); yinzhihao@cug.edu.cn (Z.Y.)
2 GNSS Research Center, Wuhan University, Wuhan 430079, China; limin@whu.edu.cn
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– name: 2 GNSS Research Center, Wuhan University, Wuhan 430079, China; limin@whu.edu.cn
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StartPage 5917
SubjectTerms Accuracy
Android smartphones
BDS
Experiments
Global positioning systems
GNSS raw observation
GPS
Ionosphere
multipath
Noise
Precise Point Positioning (PPP)
Satellites
Smartphones
Values
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Title Ionosphere-Constrained Single-Frequency PPP with an Android Smartphone and Assessment of GNSS Observations
URI https://www.proquest.com/docview/2550316283
https://search.proquest.com/docview/2454152807
https://pubmed.ncbi.nlm.nih.gov/PMC7589309
https://doaj.org/article/304f3d3d487547a0adc646dd76822c97
Volume 20
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