Open AccessCycle‐slip detection and correction of GPS single‐frequency carrier phase based on wavelet transform and LS‐SVM
Author(s) -
Tu Xu,
Lei Zhang
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2019.0525
Subject(s) - global positioning system , support vector machine , computer science , wavelet , gps signals , algorithm , transformation (genetics) , slip (aerodynamics) , wavelet transform , pattern recognition (psychology) , control theory (sociology) , artificial intelligence , assisted gps , telecommunications , engineering , biochemistry , chemistry , gene , aerospace engineering , control (management)
The high‐precision positioning of GPS requires to detect and correct the cycle‐slips in carrier phase more accurately and efficiently. In order to improve the ability of GPS single‐frequency receivers to detect and correct small cycle‐slips, the reason for the occurrence of cycle‐slips and the principle of their detection and correction are analysed; then, a method of GPS single‐frequency receivers' cycle‐slip detection and correction based on wavelet transformation and LS‐SVM is proposed. Here, WT is used to locate the cycle‐slip and the LS‐SVM is used to determine the value of it and correct it. The simulation results show that this method can detect and correct up to one cycle‐slip accurately but in contrast, the traditional polynomial fitting method can only detect and correct at least two cycle‐slips in the same condition. The feasibility of this method and its ability to accurately correct small cycle‐slips are demonstrated.