Results 41 to 50 of about 436,322 (188)

Optimization method for multi-constellation precise point positioning performance evaluation [PDF]

open access: yesJisuanji gongcheng, 2019
In order to reduce the number of parameters to be estimated and improve the positioning accuracy in the data processing of multi-constellation Precise Point Positioning(PPP),a performance evaluation method based on ambiguity integer solution for the ...
HE Wei,GUO Chengjun,TIAN Zhong
doaj   +1 more source

Effect of the 24 September 2011 solar radio burst on precise point positioning service [PDF]

open access: yes, 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
core   +2 more sources

Research on precise positioning of AGV vision based on fuzzy path rectification

open access: yesDianzi 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
doaj   +1 more source

Instantaneous Sub-meter Level Precise Point Positioning of Low-Cost Smartphones

open access: yesNavigation, 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
doaj   +1 more source

ECEF Position Accuracy and Reliability: Inertial Navigation with GNSS Precise Point Positioning (PPP) [PDF]

open access: yes, 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
core  

Analysis of the time series of station coordinates - a comparison of the network and PPP approach [PDF]

open access: yes, 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
core   +1 more source

Helmert Variance Component Estimation for Multi-GNSS Relative Positioning [PDF]

open access: yes, 2020
The Multi-constellation Global Navigation Satellite System (Multi-GNSS) has become the standard implementation of high accuracy positioning and navigation applications.
Fang, Zhenlong   +5 more
core   +2 more sources

Fast precise point positioning: a system to provide corrections for single and multi-frequency navigation [PDF]

open access: yes, 2016
Fast Precise Point Positioning (Fast-PPP) provides Global Navigation Satellite System corrections in real-time. Satellite orbits and clock corrections are shown to be accurate to a few centimeters and a few tenths of a nanosecond which, together with ...
Bertran Albertí, Eduardo   +4 more
core   +2 more sources

Enhanced Precise Point Positioning for GNSS Users

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 2012
This paper summarizes the main results obtained during the development of an Enhanced Precise Point Positioning (EPPP) Global Navigation Satellite Systems multifrequency user algorithm. The main innovations include the application of precise ionospheric corrections to facilitate the resolution of undifferenced carrier phase ambiguities, ambiguity ...
Juan Zornoza, José Miguel   +11 more
openaire   +3 more sources

Augment BeiDou real-time precise point positioning using ECMWF data

open access: yesEarth, Planets and Space, 2018
The Chinese BeiDou Navigation Satellite System has shown potential for precise positioning with a comparable accuracy to that of the Global Positioning System (GPS) at the centimeter level for the horizontal component and the sub-centimeter level for the
Kemin Zhu   +5 more
doaj   +1 more source

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