An Enhanced Precise Carrier Phase Positioning Method for Vehicle Navigation
نویسندگان
چکیده
Precise carrier phase positioning is a widely used technique in vehicle navigation, localization, and mapping, which utilizes pseudorange measurements with the extended Kalman filter (EKF) to estimate position, velocity, ambiguities. For highly accurate requirements, propagation errors of need be considered, especially ionospheric delay, most significant error source. In EKF, priori information different characteristics can fully utilized as constraints obtain more precise state estimation results, even when no corrections are available. This paper aims improve accuracy for navigation proposes spherical harmonic function (SHF)-based undifferenced uncombined (UDUC) method vehicles fit delays multiple satellites single formula reduce marginal effect caused by polynomials. Better results expected compared traditional UDUC polynomial fitting approaches. The feasibility proposed tested on kinematic dataset from real-world car test. experimental show that outperforms methods, respectively, root mean square 0.860 m standard deviation 0.579 using broadcast ephemeris. summary, demonstrate beneficial navigation.
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ژورنال
عنوان ژورنال: IEEE Access
سال: 2023
ISSN: ['2169-3536']
DOI: https://doi.org/10.1109/access.2023.3285818