Volume 46 Issue 7
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GUO Fei, WU Weiwang, ZHANG Xiaohong, LIU Wanke. Realization and Precision Analysis of Real-Time Precise Point Positioning with Android Smartphones[J]. Geomatics and Information Science of Wuhan University, 2021, 46(7): 1053-1062. DOI: 10.13203/j.whugis20200527
Citation: GUO Fei, WU Weiwang, ZHANG Xiaohong, LIU Wanke. Realization and Precision Analysis of Real-Time Precise Point Positioning with Android Smartphones[J]. Geomatics and Information Science of Wuhan University, 2021, 46(7): 1053-1062. DOI: 10.13203/j.whugis20200527
shu

Realization and Precision Analysis of Real-Time Precise Point Positioning with Android Smartphones

  • 1.

    School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China

Funds: 

The National Key Research and Development Program of China 2017YFB0503402

The National Key Research and Development Program of China 2016YFB0501803

the National Natural Science Foundation of China 41774034

Wuhan Science and Technology Project 2020010601012185

Fundamental Research Funds for the Central Universities 2042019kf0214

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  • Author Bio:

    GUO Fei, PhD, professor, specializes in GNSS precise positioning and its application. E-mail: fguo@sgg.whu.edu.cn

  • Received Date: October 28, 2020
  • Published Date: July 09, 2021
    Graphical Abstract
    • Abstract
  •   Objectives  With the popularization of smartphones and the evolution of global navigation satellite systems (GNSS), navigation contributes as an indispensable function for smartphones, and the demand of high-precision positioning for mass-market smartphones is becoming higher. From 2016, developers can obtain GNSS raw observations through Google Android application programming interface (API). Android 9.0 and above versions, provide the option to turn off the duty cycle, which makes it possible for smartphones to conduct precise point positioning (PPP).
      Methods  This paper conducts quality analysis of the GNSS observations for several common-used dual-frequency smartphones, Huawei Mate 20/30 and Xiaomi 8, and propose a set of quality control schemes that is suitable for smartphone PPP. Gross errors can be removed by data detection according to satellite elevation, signal-to-noise ratio, pre-residuals, etc., while cycle slips can be detected by the accumulated delta range state (ADRS) identifiers as well as the time difference carrier phase (TDCP) observations. A real-time PPP application based on Android platform was developed. It supports for singe- and dual-frequency, real-time and post-processing PPP. To verify the performance of PPP with smartphones, several field experiments were performed with different smartphones in different scenarios.
      Results  Field results show that: (1) The pseudorange quality of Xiaomi 8 and Huawei Mate 20 are similar, while the carrier phase quality of Huawei Mate 20/30 is significantly worse than Xiaomi 8. (2) The ADRS identifier of Xiaomi 8 can better identify the cycle slip, while it is difficult for Huawei Mate 20/30 to directly determine the cycle slips through the ADRS identifier. By combining the ADRS and TDCP can detect most of cycle slips. (3) The positioning accuracy of single-frequency PPP for Xiaomi 8 and Huawei Mate 20/30 reach 0.5-0.6 m in horizontal, and 1.0-2.0 m in vertical. The positioning accuracy of dual-frequency PPP is better than that of single-frequency PPP after convergence, especially in the vertical direction. (4) For the real-time and post-processing PPP, they both have a similar positioning accuracy in the horizontal components, while the positioning accuracy of post-processing PPP in the vertical direction is higher than that of real-time PPP by 20%-40%.
      Conclusions  An accuracy of a few decimeters can be achieved for real-time PPP with Android smartphones. Different from geodetic GNSS receivers, the widely-used smartphones use low-cost linearly-polarized antennas. In addition, smartphones are often used in urban complex scenarios, thus the GNSS data they collect have more gross errors, cycle slips and multipath effects. Further study should focus on the multipath mitigation, multi-frequency and multi-GNSS combination, and fusion with other sensors such as gyroscopes, magnetometers, barometers, bluetooth, Wi-Fi, etc. to realize continuous and seamless positioning both indoor and outdoor.
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    • References (17)
  • [1]
    Zhang X, Tao X, Zhu F, et al. Quality Assessment of GNSS Observations from an Android N Smartphone and Positioning Performance Analysis Using Time-Differenced Filtering Approach[J]. GPS Solutions, 2018, 22(3): 70 doi: 10.1007/s10291-018-0736-8
    [2]
    刘万科, 史翔, 朱锋, 等. 谷歌Nexus 9智能终端原始GNSS观测值的质量分析[J]. 武汉大学学报·信息科学版, 2019, 44(12): 1 749-1 756 doi: 10.13203/j.whugis20180141

    Liu Wanke, Shi Xiang, Zhu Feng, et al. Quality Analysis of Raw GNSS Observation of Google Nexus 9 Smart Tablet Terminal[J]. Geomatics and Information Science of Wuhan University, 2019, 44(12): 1 749-1 756 doi: 10.13203/j.whugis20180141
    [3]
    史翔. 基于智能手机GNSS观测值的连续平滑定位算法[D]. 武汉: 武汉大学, 2019

    Shi Xiang. Continuous Smoothing Positioning Algorithm Based on GNSS Observations of Smartphones[D]. Wuhan: Wuhan University, 2019
    [4]
    Aggrey J, Bisnath S, Naciri N, et al. Use of PPP Processing for Next-generation Smartphone GNSS Chips: Key Benefits and Challenges[C]. The 32nd International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 2019), Miami, Florida, USA, 2019
    [5]
    Chen B, Gao C, Liu Y, et al. Real-Time Precise Point Positioning with a Xiaomi Mi 8 Android Smartphone[J]. Sensors, 2019, 19(12): 2 835 doi: 10.3390/s19122835
    [6]
    Håkansson M. Characterization of GNSS Observations from a Nexus 9 Android Tablet[J]. GPS Solutions, 2019, 23(1): 21 doi: 10.1007/s10291-018-0818-7
    [7]
    Paziewski J, Sieradzki R, Baryla R. Signal Characterization and Assessment of Code GNSS Positioning with Low-Power Consumption Smartphones[J]. GPS Solutions, 2019, 23(4): 98 doi: 10.1007/s10291-019-0892-5
    [8]
    Riley S, Lentz W, Clare A. On the Path to Precision-Observations with Android GNSS Observables[C]. The 30th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 2017), Portland, Oregon, USA, 2017
    [9]
    Pirazzi G, Mazzoni A, Biagi L, et al. Preliminary Performance Analysis with a GPS+Galileo Enabled Chipset Embedded in a Smartphone[C]. The 30th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 2017), Portland, Oregon, USA, 2017
    [10]
    Liu W, Shi X, Zhu F, et al. Quality Analysis of Multi-GNSS Raw Observations and a Velocity-Aided Positioning Approach Based on Smartphones [J]. Advances in Space Research, 2019, 63(8): 2 358-2 377 doi: 10.1016/j.asr.2019.01.004
    [11]
    Robustelli U, Baiocchi V, Pugliano G. Assessment of Dual Frequency GNSS Observations from a Xiaomi Mi 8 Android Smartphone and Positioning Performance Analysis[J]. Electronics, 2019, 8(1): 91 doi: 10.3390/electronics8010091
    [12]
    Fortunato M, Critchley-Marrows J, Siutkowska M, et al. Enabling High Accuracy Dynamic Applications in Urban Environments Using PPP and RTK on Android Multi-frequency and Multi-GNSS Smartphones[C]. European Navigation Conference (ENC), Warsaw, Poland, 2019
    [13]
    Elmezayen A G, El-Rabbany A. Precise Point Positioning Using World's First Dual-Frequency GPS/Galileo Smartphone[J]. Sensors, 2019, 19(11): 2 593 doi: 10.3390/s19112593
    [14]
    Wu Q, Sun M, Zhou C, et al. Precise Point Positioning Using Dual-Frequency GNSS Observations on Smartphone[J]. Sensors, 2019, 19(9): 2 189 doi: 10.3390/s19092189
    [15]
    郭斐. GPS精密单点定位质量控制与分析的相关理论和方法研究[D]. 武汉: 武汉大学, 2013

    Guo Fei. Theory and Method of Quality Control and Quality Analysis for Precise Point Positioning[D]. Wuhan: Wuhan University, 2013
    [16]
    张小红, 郭斐, 李盼, 等. GNSS精密单点定位中的实时质量控制[J]. 武汉大学学报·信息科学版, 2012, 37(8): 940-944 http://ch.whu.edu.cn/article/id/281

    Zhang Xiaohong, Guo Fei, Li Pan, et al. Real-Time Quality Control Procedure for GNSS Precise Point Positioning[J]. Geomatics and Information Science of Wuhan University, 2012, 37(8): 940-944 http://ch.whu.edu.cn/article/id/281
    [17]
    邹璇, 李宗楠, 陈亮, 等. 一种历元间差分单站单频周跳探测与修复方法[J]. 武汉大学学报·信息科学版, 2017, 42(10): 1 406-1 410 doi: 10.13203/j.whugis20150805

    Zou Xuan, Li Zongnan, Chen Liang, et al. A New Cycle Slip Detection and Repair Method Based on Epoch Difference for a Single-Frequency GNSS Receiver[J]. Geomatics and Information Science of Wuhan University, 2017, 42(10): 1 406-1 410 doi: 10.13203/j.whugis20150805
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