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Research on Enhancing the Positioning Performance of Smartphones with Low-Earth Orbit Satellites
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Hui XIE1, Youlong WU2, *, Guoli LI1, Shuai CHEN3
Journal of Geodesy and Geodynamics | 2025, 45(9) : 910 - 914
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Journal of Geodesy and Geodynamics | 2025, 45(9): 910-914
Research on Enhancing the Positioning Performance of Smartphones with Low-Earth Orbit Satellites
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Hui XIE1, Youlong WU2, *, Guoli LI1, Shuai CHEN3
Affiliations
  • 1 School of Mechanical and Electrical Engineering, Jinling Institute of Technology, 99 Hongjing Road, Nanjing 211169, China
  • 2 School of Intelligent Science and Control Engineering, Jinling Institute of Technology, 99 Hongjing Road, Nanjing 211169, China
  • 3 School of Automation, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing 210094, China

    • XIE Hui, lecturer, majors in satellite navigation and positioning technology and Internet of Things application technology, E-mail:

About Author:

XIE Hui, lecturer, majors in satellite navigation and positioning technology and Internet of Things application technology, E-mail:

Published: 2025-09-15 doi: 10.14075/j.jgg.2024.08.409
Outline
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To address the issues of large pseudorange measurement noise, discontinuous observation data, weak geometric strength in smartphone GNSS observations, and high noise levels in the built-in micro inertial measurement unit(MIMU) of smartphones, a tightly coupled GNSS/MIMU navigation method enhanced by low-Earth orbit(LEO) satellites is proposed. Based on the characteristics of the Walker constellation and the Keplerian orbital parameters of LEO satellites, LEO pseudorange observation data are simulated. The positioning performance of smartphone GNSS single-point positioning, GNSS/MIMU tight integration, and LEO-enhanced GNSS/MIMU tight integration are compared and analyzed. Real smartphone data are used for validation. The experimental results show that after incorporating LEO satellites, the average number of visible satellites increases by about 7. The faster movement speed of LEO satellites further optimizes the GNSS geometric strength, reducing the average PDOP value by 50%. Compared with GNSS single-point positioning, the GNSS/MIMU tight integration improves positioning accuracy in the east, north, and up directions by 18%, 23%, and 10%, respectively. The LEO-enhanced GNSS/MIMU tight integration improves positioning accuracy in the east, north, and up directions by 73%, 81%, and 60% compared with GNSS single-point positioning, and by 67%, 75%, and 56% compared with GNSS/MIMU tight integration.

smartphone  /  GNSS  /  MIMU  /  LEO  /  tightly coupled
谢慧, 吴有龙, 李国利, 陈帅. 低轨卫星增强智能手机定位性能研究. 大地测量与地球动力学, 2025 , 45 (9) : 910 -914 . DOI: 10.14075/j.jgg.2024.08.409
Hui XIE, Youlong WU, Guoli LI, Shuai CHEN. Research on Enhancing the Positioning Performance of Smartphones with Low-Earth Orbit Satellites[J]. Journal of Geodesy and Geodynamics, 2025 , 45 (9) : 910 -914 . DOI: 10.14075/j.jgg.2024.08.409
Funding
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  • Postdoctoral Science Foundation of Jiangsu Province(2021K463C)
  • Industry-University-Research Cooperation Project of Jiangsu Province(BY20230867)
Appendix
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Year 2025 volume 45 Issue 9
27
11
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Article Info
doi: 10.14075/j.jgg.2024.08.409
  • Receive Date：2024-08-20
  • Online Date：2026-10-29
  • Published：2025-09-15
Article Data
Affiliations
History
  • Received：2024-08-20
Funding
Postdoctoral Science Foundation of Jiangsu Province(2021K463C)
Industry-University-Research Cooperation Project of Jiangsu Province(BY20230867)
Affiliations
    1 School of Mechanical and Electrical Engineering, Jinling Institute of Technology, 99 Hongjing Road, Nanjing 211169, China
    2 School of Intelligent Science and Control Engineering, Jinling Institute of Technology, 99 Hongjing Road, Nanjing 211169, China
    3 School of Automation, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing 210094, China
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