Results 81 to 90 of about 1,516 (192)
A Novel Robust High‐Precision Ionospheric Delay Modeling for PPP‐RTK Using Crowdsourced Data
Space Weather, Volume 24, Issue 2, February 2026.Abstract The performance of PPP‐RTK is critically dependent on the quality of ionospheric corrections derived from a reference network. While the proliferation of mass‐market Global Navigation Satellite System (GNSS) devices offers a promising crowdsourcing opportunity to densify or replace this infrastructure, it introduces the formidable challenge of
Bo Wang +6 more
wiley +1 more source
, 2022 International audienceThe late 90s came with the development of high precision positioning, when GNSS (Global Navigation Satellite System) antennas have become essential elements. Their scope has broadened, allowing to compute atmospheric data above land,
Khenchaf, Ali +3 more
core +1 more source
Journal of Geospatial Information Science and Engineering, 2020 The tropospheric delay is an essential source of error for positioning using the Global Navigation Satellite System (GNSS). Scientific applications of GNSS positioning such as the study of earth crust deformation and earthquake prediction require high ...
Syachrul Arief, Andrea Gatti
doaj +1 more source
IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.This study focuses on the critical challenge of selecting an overall optimal ISB stochastic model to improve GNSS PPP performance, which establishes a comprehensive assessment framework integrating positioning accuracy, convergence time, ISB characteristics, residual analysis, correlation metrics and physical mechanism interpretation.
Ban Zhao
wiley +1 more source
Remote SensingImproving the accuracy of zenith tropospheric delay (ZTD) models is an important task. However, the existing ZTD models still have limitations, such as a lack of appropriate vertical adjustment function and being unsuitable for China, which has a complex
Jihong Zhang +6 more
doaj +1 more source
Atmospheric Water Vapor and Precipitation Coupling in Southwestern South America
Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.Abstract Most studies linking atmospheric water vapor and precipitation emphasize short records, tropical regions, or the Northern Hemisphere. Long‐term variability of water vapor and its coupling with precipitation remain poorly understood across strong latitudinal and climatic gradients.
Raúl Valenzuela +2 more
wiley +1 more source
Assimilation of GNSS ZTD with HARMONIE
, 2014 Póster presentado en: International Symposium on Data Assimilation 2014 celebrado en Munich, del 24 al 28 de febrero de ...
Sánchez Arriola, Jana +3 more
openaire +1 more source
Analysis of ZTD and IWV Time Series from GPS ReprocessingCampaign
, 2016 Seasonal components in the ZTD (Zenith Tropospheric Delay) and IWV (Integrated Water Vapour) time series are important and provide information about weather conditions in a given region.
TANIR KAYIKÇI, EMİNE +2 more
core
Real-time ZTD from GPS, Galileo, GPS+Galileo over 2019
, 2020 Time series of real-time ZTD from GPS-only, Galileo-only and GPS+Galileo real-time PPP solution calculated in GNSS-WARP software.The study has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie ...
Hadas, T (via Mendeley Data) +1 more
core +1 more source
Experiments with assimilation of ZTD GPS data
, 2004 Ponencia presentada en: HIRLAM All-Staff Meeting 2004 celebrado en Madrid, del 1 al 3 de marzo de 2004, en el Instituto Nacional de ...
Sánchez Arriola, Jana +2 more
openaire +1 more source