Results 21 to 30 of about 17,055 (266)

Real-Time Estimation of Ionospheric Power Spectral Density for Enhanced BDS PPP/PPP-AR Performance

Electronics
The undifferenced and uncombined (UDUC) model preserves raw code and carrier-phase observations for each frequency, avoiding differencing or ionosphere-free combinations. This approach enables the direct estimation of atmospheric parameters. However, the stochastic characteristics of these parameters, particularly ionospheric delay, are often ...
Yixi Wang, Huizhong Zhu, Qi Xu, Jun Li, Chuanfeng Song   +4 more
openalex   +2 more sources

Assessment of Affordable Real-Time PPP Solutions for Transportation Applications

Algorithms
With the availability of multi-frequency, multi-constellation global navigation satellite system (GNSS) modules, precise transportation applications have become attainable.
Mohamed Abdelazeem, Amgad Abazeed, Abdulmajeed Alsultan, Amr M. Wahaballa   +3 more
doaj   +2 more sources

Evaluation of BDS-3 B1C/B2b Single/Dual-Frequency PPP Using PPP-B2b and RTS SSR Products in Both Static and Dynamic Applications

Remote Sensing, 2022
The BeiDou Global Navigation Satellite System (BDS-3) can provide PPP-B2b satellite-based Precise Point Positioning (PPP) real-time service to the Asia–Pacific region via PPP-B2b signal transmitted from the three Geostationary Earth Orbit (GEO ...
Ruohua Lan, Cheng Yang, Yanli Zheng, Qiaozhuang Xu, Jie Lv, Zhouzheng Gao   +5 more
doaj   +1 more source

Performance Assessment of Multi-GNSS Real-Time Products from Various Analysis Centers

Remote Sensing, 2022
The performance of real-time precise point positioning (PPP) relies primarily on the availability and quality of orbit and clock corrections. In this research, we collected data streams from 12 real-time mount points of IGS Real-Time Service (RTS) or ...
Chao Yu, Yize Zhang, Junping Chen, Qian Chen, Kexin Xu, Bin Wang   +5 more
doaj   +1 more source

Performance of BDS-2/3, GPS, and Galileo Time Transfer with Real-Time Single-Frequency Precise Point Positioning

Remote Sensing, 2021
Single-frequency (SF) receivers are much cheaper than that of dual-frequency (DF). Even though DF precise point positioning (PPP) is nowadays applied in the time community, the cost of equipment is one of the key considerations for time users ...
Xia Xiao, Fei Shen, Xiaochun Lu, Pengli Shen, Yulong Ge   +4 more
doaj   +1 more source

Comprehensive Analyses of PPP-B2b Performance in China and Surrounding Areas

Remote Sensing, 2022
BeiDou Global Navigation Satellite System (BDS-3) provides a regional Precise Point Positioning (PPP) service, called PPP-B2b, for users in China and surrounding areas through B2b signal transmitted from its three geostationary earth orbit (GEO ...
Yan Liu, Cheng Yang, Mengni Zhang
doaj   +1 more source

Performance analysis of real-time and post-mission kinematic precise point positioning in marine environments

Geodesy and Geodynamics, 2020
This article focuses on the performance analysis of both real-time and post-mission kinematic precise point positioning (PPP) in challenging marine environments.
Serdar Erol, Reha Metin Alkan, İ. Murat Ozulu, Veli İlçi   +3 more
doaj   +1 more source

Accuracy Analysis of Real-Time Precise Point Positioning—Estimated Precipitable Water Vapor under Different Meteorological Conditions: A Case Study in Hong Kong

Atmosphere, 2023
Precipitable water vapor (PWV) monitoring with real-time precise point positioning (PPP) is required for the improved early detection of increasingly common extreme weather occurrences. This study takes Hong Kong as the research object.
Ying Xu, Lin Ma, Fangzhao Zhang, Xin Chen, Zaozao Yang   +4 more
doaj   +1 more source

Monitoring Water Vapor Variations with PPP and IGS Real Time Service

Afyon Kocatepe University Journal of Sciences and Engineering, 2018
Engin Tunalı
openalex   +2 more sources

GNSS techniques for real-time monitoring of landslides: a review

Satellite Navigation, 2023
Currently, Global Navigation Satellite System (GNSS) Real-Time Kinematic positioning (RTK) and Precise Point Positioning (PPP) techniques are widely employed for real-time monitoring of landslides.
Guanwen Huang, Shi Du, Duo Wang
doaj   +1 more source