Multi-Frequency Precise Point Positioning using GPS and Galileo data with smoothed ionospheric corrections [PDF]
, 2018 The poor signal visibility and continuity associated with urban environments together with the slow convergence/reconvergence time of Precise Point Positioning (PPP), usually makes PPP unsuitable for land navigation in cities.
Basile, Francesco +4 more
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The positioning performance of low-cost GNSS receivers in the Precise Point Positioning method [PDF]
Advances in Geodesy and Geoinformation, 2022 Satellite-based positioning, which started being developed in the mid-1960s for military purposes, is now used in almost every area. For the studies single and/or double frequency receivers are used.
Mustafa Fahri Karabulut +9 more
doaj +1 more source
Effectiveness of observation-domain sidereal filtering for GPS precise point positioning [PDF]
, 2015 Sidereal filtering is a technique used to reduce errors caused by multipath in the positioning of static receivers via the Global Positioning System (GPS).
Atkins, C, Ziebart, M
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Instantaneous Sub-meter Level Precise Point Positioning of Low-Cost Smartphones
Navigation, 2023 The prevalence of inexpensive global navigation satellite system (GNSS) chips that facilitate the performance of carrier phase measurements has provided hardware that can be used as the foundation for implementing precise point positioning (PPP) of low ...
Jiale Wang +4 more
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Research Article. Improved Dual Frequency PPP Model Using GPS and BeiDou Observations
Journal of Geodetic Science, 2017 This paper introduces a new dual-frequency precise point positioning (PPP) model, which combines GPS and BeiDou observations. Combining GPS and BeiDou observations in a PPP model offers more visible satellites to the user, which is expected to enhance ...
Afifi A., El-Rabbany A.
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Analysis of the time series of station coordinates - a comparison of the network and PPP approach [PDF]
, 2015 Based on the example of fourteen selected permanent GNSS stations of the EPN (EUREF Permanent Network) the differences of time variations of coordinates – velocities – resulting from the network and PPP (Precise Point Positioning) solution are studied.
Douša, Jan +3 more
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Effect of the 24 September 2011 solar radio burst on precise point positioning service [PDF]
, 2014 An intense solar radio burst occurred on 24 September 2011, which affected the tracking of Global Navigation Satellite Systems’ (GNSS) signals by receivers located in the sunlit hemisphere of the Earth.
Aquino, M. +3 more
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Research on precise positioning of AGV vision based on fuzzy path rectification
Dianzi Jishu Yingyong, 2018 For the traditional autonomous navigation vehicle(AGV), the problem of high-precision path tracking and precise positioning of key points can not be satisfied.
Li Zhao, Shu Zhibing, Yan Liang
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A cryogenic rotation stage with a large clear aperture for the half-wave plates in the Spider instrument [PDF]
, 2015 We describe the cryogenic half-wave plate rotation mechanisms built for and used in Spider, a polarization-sensitive balloon-borne telescope array that observed the Cosmic Microwave Background at 95 GHz and 150 GHz during a stratospheric balloon flight ...
Alexandra S. Rahlin +51 more
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ECEF Position Accuracy and Reliability: Inertial Navigation with GNSS Precise Point Positioning (PPP) [PDF]
, 2020 This report presents experimental results for a moving platform using GPS PPP data for state estimation. Results from two PPP GPS state estimation approaches are presented: point-wise least squares (LS) and aided inertial navigation (INS). The point-wise
Farrell, Jay A. +2 more
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