Results 51 to 60 of about 101,629 (318)

Multi-GNSS precise point positioning for precision agriculture [PDF]

open access: yesPrecision Agriculture, 2018
The main objective of this research was to examine the feasibility of Multi-GNSS precise point positioning (PPP) in precision agriculture (PA) through a series of experiments with different working modes (i.e. stationary and moving) under different observation conditions (e.g. open sky, with buildings or with canopy).
Jing Guo   +8 more
openaire   +3 more sources

Galileo millimeter-level kinematic precise point positioning with ambiguity resolution

open access: yesEarth, Planets and Space, 2019
On February 11, 2019, four additional Galileo satellites were put into service, approaching the completion of the European global navigation satellite system constellation.
Georgia Katsigianni   +3 more
doaj   +1 more source

Performance Analysis of BDS–5G Combined Precise Point Positioning

open access: yesRemote Sensing, 2022
Precise point positioning (PPP) technology is one of the core technologies in the field of GNSS high-precision positioning. It is used widely because it can realize centimeter-level positioning in outdoor environments by using only a single receiver ...
Fangxin Li   +5 more
doaj   +1 more source

Evaluation of Ionospheric Delay Effects on Multi-GNSS Positioning Performance

open access: yesRemote Sensing, 2019
Ionospheric delay is a significant error source in multi-GNSS positioning. We present different processing strategies to fully exploit the ionospheric delay effects on multi-frequency and multi-GNSS positioning performance, including standard point ...
Ke Su, Shuanggen Jin, M. M. Hoque
doaj   +1 more source

An evaluation of real-time troposphere estimation based on GNSS Precise Point Positioning [PDF]

open access: yes, 2017
peer reviewedIt is anticipated that the performance of real-time (RT) GNSS meteorology can be further improved by incorporating observations from multiple Global Navigation Satellite System (GNSS), including GPS, GLONASS, Galileo, and BeiDou.
Yuan, Yunbin   +9 more
core   +1 more source

The application of Precise Point Positioning in Geosciences [PDF]

open access: yesThe 9th International Conference "Environmental Engineering 2014", 2014
Precise Point Positioning (PPP), an absolute positioning method, is an alternative for conventional relative positioning. Currently the PPP accuracy, is on the level of few-centimetres for static and decimetre for kinematic positioning respectively. However, long convergence time of PPP results is observed.
Jakub Kalita   +2 more
openaire   +1 more source

The positioning performance of low-cost GNSS receivers in the Precise Point Positioning method [PDF]

open access: yesAdvances 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

Research Article. Improved Dual Frequency PPP Model Using GPS and BeiDou Observations

open access: yesJournal 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.
doaj   +1 more source

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

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

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