Volume 43 Issue 7
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LI Xin, GUO Jiming, ZHANG Di, YANG Fei. An Algorithm of GPS Single-Epoch Kinematic Positioning Based on Doppler Velocimetry[J]. Geomatics and Information Science of Wuhan University, 2018, 43(7): 1036-1041. DOI: 10.13203/j.whugis20160247
Citation: LI Xin, GUO Jiming, ZHANG Di, YANG Fei. An Algorithm of GPS Single-Epoch Kinematic Positioning Based on Doppler Velocimetry[J]. Geomatics and Information Science of Wuhan University, 2018, 43(7): 1036-1041. DOI: 10.13203/j.whugis20160247
shu

An Algorithm of GPS Single-Epoch Kinematic Positioning Based on Doppler Velocimetry

  • 1.

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

Funds: 

The National Natural Science Foundation of China 41474004

The National Natural Science Foundation of China 41604019

the Open Fund of Key Laboratory of Precise Engineering and Industry Surveying of National Administration of Surveying, Mapping and Geoinformation PF2013-10

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  • Author Bio:

    LI Xin, PhD, specializes in the GNSS high precision data processing. E-mail: 2011202140067@whu.edu.cn

  • Received Date: November 08, 2016
  • Published Date: July 04, 2018
    Graphical Abstract
    • Abstract
  • Due to the less prior constraint information, the ambiguity resolution and positioning performance are not very good in the GPS single-epoch kinematic positioning parameter estimation. Thus, a new method of GPS single-epoch kinematic positioning based on Doppler velocimetry is proposed in this paper. The coordinate initialization using the velocity information is firstly discussed, the current epoch's coordinate of the moving vehicle is predicted with the priori coordinate and velocity information. Compared with the conventional method of single point positioning (SPP) coordinate initialization, it is expected to obtain higher precision, but poorer robustness as well. Thus, the corresponding strategy for single-epoch ambiguity resolution is further introduced so as to improve the positioning performance of the method in this paper. Contrasting with the conventional algorithm of GPS single-epoch kinematic positioning, the experimental results show that, the method proposed can improve the precision of the float ambiguity, the final ambiguity fixed rate and the average positioning accuracy, especially in the case that, the number of GPS satellites is not sufficient or the geometric structure of the satellites is not very good.
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    • References (15)
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