Results 61 to 70 of about 269 (137)

A Continuous B2b-PPP Model Considering Interruptions in BDS-3 B2b Orbits and Clock Corrections as Well as Signal-in-Space Range Error Residuals

Remote Sensing
In 2020, BDS-3 began broadcasting high-precision positioning correction products through B2b signals, effectively addressing the limitations of ground-based augmentation.
Rui Shang, Zhenhao Xu, Chengfa Gao, Xiaolin Meng, Wang Gao, Qi Liu   +5 more
doaj   +1 more source

Real-time precise point positioning performance in Hong Kong during May 2024 space weather events [PDF]

Space weather events are the primary drivers of ionospheric variations. These variations challenge conventional GNSS algorithms’ ionospheric processing strategies, leading to degraded positioning accuracy.
Chen Bo, Huang Junting, Liu Jian, Liu Tong, Sun Mengfei, Zhang Kun   +5 more
core   +1 more source

Temporal Characteristics Based Outlier Detection and Prediction Methods for PPP-B2b Orbit and Clock Corrections

Remote Sensing
The BeiDou Global Navigation Satellite System (BDS-3) provides real-time precise point positioning (PPP) service via B2b signals, offering real-time decimeter-level positioning for users in China and surrounding areas.
Zhenhao Xu, Rui Shang, Chengfa Gao, Wang Gao, Qi Liu, Fengyang Long, Dawei Xu   +6 more
doaj   +1 more source

Flatness constraints in the estimation of GNSS satellite antenna phase center offsets and variations [PDF]

Accurate information on satellite antenna phase center offsets (PCOs) and phase variations (PVs) is indispensable for high-precision geodetic applications.
Duan, Bingbing, Hugentobler, Urs, Montenbruck, Oliver, Steigenberger, Peter, Villiger, Arturo   +4 more
core   +1 more source

APPLICAZIONI DEL SISTEMA SATELLITARE EUROPEO GALILEO ALLA NAVIGAZIONE TERRESTRE [PDF]

, 2023
Lo scopo dell’attività di ricerca è testare le prestazioni del sistema satellitare Galileo nelle applicazioni alla navigazione terrestre, rispetto ai sistemi GNSS GPS e GLONASS, analizzando l’accuratezza nel posizionamento cinematico e le precisioni ...
SNIDER, PAOLO
core  

Performance Evaluation and Application Field Analysis of Precise Point Positioning Based on Different Real-Time Augmentation Information

Remote Sensing
The most commonly used real-time augmentation services in China are the International GNSS Service’s (IGS) real-time service (RTS), PPP-B2b service, and Double-Frequency Multi-Constellation (DFMC) service of the BeiDou Satellite-Based Augmentation System
Mengjun Wu, Le Wang, Wei Xie, Fan Yue, Bobin Cui   +4 more
doaj   +1 more source

Enhancing PPP-B2b Performance with Regional Atmospheric Augmentation

Remote Sensing
Currently, the PPP-B2b service faces challenges such as long convergence times and re-convergence issues after signal interruptions due to the lack of high-precision atmospheric enhancement.
Qing Zhao, Shuguo Pan, Wang Gao, Xianlu Tao, Hao Liu, Zeyu Zhang, Qiang Wang   +6 more
doaj   +1 more source

Brazil and USA: internationalization process of Zaask [PDF]

, 2019
This paper studies the internationalization possibilities of Zaask into Brazil and the USA. Through a PESTLE analysis the countries’ conditions are determined, while an industry analysis rates its attractiveness and a company and competitors analysis ...
Figueiredo, Catarina marques
core   +2 more sources

Guiado GNSS de tractores; análisis de diferentes opciones en el posicionamiento [PDF]

, 2023
En este trabajo se evalúa el rendimiento de sistemas de corrección GNSS gratuitos en el guiado de tractores. Se evaluaron tres tipos de receptores GNSS, un Navilock NL-8022MP, un Novatel Smart2 y un Harxon TS108PRO, tres sistemas de corrección, EGNOS ...
Alonso García, Ángel
core  

BDS PPP ambiguity resolution using B1I/B2I/B3I/B1C/B2a observations with regional reference network augmentation

Geo-spatial Information Science
BeiDou navigation satellite system with global coverage (BDS-3) has been fully operational since July 2020, currently providing the positioning, navigation and timing service together with regional BDS-2. In addition to the legacy signals of B1I and B3I,
Hongbo Lyu, Xingxing Li, Jiaxin Huang, Guolong Feng, Bo Wang, Xin Li, Zhiheng Shen   +6 more
doaj   +1 more source