Results 21 to 30 of about 3,601 (172)

Land deformation monitoring in mining area with PPP-AR

open access: yesInternational Journal of Mining Science and Technology, 2014
Abstract The mining area deformation monitoring theory and method using precise point positioning (PPP) ambiguity resolution (AR) were studied, and an ambiguity fixing model with satellite and receiver combination phase delay (CPD) was proposed for zero-differenced PPP ambiguity fixing and its corresponding formula derivation was given.
Hong Hu, Jingxiang Gao, Yifei Yao
openaire   +1 more source

PPP and PPP-AR Kinematic Post-Processed Performance of GPS-Only, Galileo-Only and Multi-GNSS

open access: yesRemote Sensing, 2019
Precise point positioning (PPP) has been used for decades not only for general positioning needs but also for geodetic and other scientific applications.
Georgia Katsigianni   +2 more
doaj   +1 more source

Assessing IGS GPS/Galileo/BDS-2/BDS-3 phase bias products with PRIDE PPP-AR

open access: yesSatellite Navigation, 2021
Ambiguity Resolution in Precise Point Positioning (PPP-AR) is important to achieving high-precision positioning in wide areas. The International GNSS (Global Navigation Satellite System) Service (IGS) and some other academic organizations have begun to ...
Jianghui Geng, Songfeng Yang, Jiang Guo
doaj   +1 more source

Performance investigation of LAMBDA and bootstrapping methods for PPP narrow-lane ambiguity resolution

open access: yesGeo-spatial Information Science, 2021
Precise point positioning with ambiguity resolution (PPP-AR) is a powerful tool for geodetic and time-constrained applications that require high precision.
Omer Faruk Atiz   +4 more
doaj   +1 more source

Evaluation of Real-time Precise Point Positioning with Ambiguity Resolution Based on Multi-GNSS OSB Products from CNES

open access: yesRemote Sensing, 2022
Ambiguity resolution (AR) is a core technology that helps to speed up convergence time and increase positioning accuracy for precise point positioning (PPP), and the performance of PPP-AR is based on the quality of ambiguity resolution products.
Shi Du   +5 more
doaj   +1 more source

Studying the Fixing Rate of GPS PPP Ambiguity Resolution Under Different Geomagnetic Storm Intensities

open access: yesSpace Weather, 2023
Global Positioning System (GPS) Precise Point Positioning (PPP) with correct fixing ambiguity resolution (AR) can reach cm‐mm level positioning accuracy. However, this accuracy can be degraded by the geomagnetic storm effects.
Xiaomin Luo   +4 more
doaj   +1 more source

An uncombined triple-frequency user implementation of the decoupled clock model for PPP-AR [PDF]

open access: yesJournal of Geodesy, 2021
AbstractPrecise point positioning (PPP) has proved its capacity to provide centimetre-level position solutions in open sky environments. However, the technique still suffers from relatively long initial convergence times. Research has proved the potential of ambiguity resolution (AR) to reduce the convergence time and three main methods are used to ...
Nacer Naciri, Sunil Bisnath
openaire   +1 more source

Integrity monitoring scheme for single-epoch GNSS PPP-RTK positioning

open access: yesSatellite Navigation, 2023
Integrity monitoring for precise point positioning is critical for safety-related applications. With the increasing demands of high-accuracy autonomous navigation for unmanned ground and aerial vehicles, the integrity monitoring method of high-precision ...
Wenhao Zhang, Jinling Wang
doaj   +1 more source

Efficacy of dual sublingual immunotherapy with Japanese cedar pollen and house dust mite allergens in patients with allergic rhinitis sensitized to multiple allergens

open access: yesLaryngoscope Investigative Otolaryngology, 2022
Objective In the present study, we examined the effects of dual sublingual immunotherapy (SLIT) with Japanese cedar pollen (JCP) and house dust mite (HDM) allergens on nasal symptoms during the peak pollen period (PPP) and in late fall (LF) in patients ...
Tatsuya Fujii   +4 more
doaj   +1 more source

Advances in UAV Operations for Valley-Type Mapping with Different Duration Period PPP-AR Methods in GCP

open access: yesApplied Sciences
This study evaluates the performance of the Precise Point Positioning with Ambiguity Resolution (PPP-AR) method under varying durations and software platforms in determining the optimal placement of Ground Control Points (GCPs) for use in photogrammetric
Burhaneddin Bilgen   +2 more
doaj   +1 more source

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