Results 1 to 10 of about 8,023 (167)

Assessing BeiDou-3 PPP-B2b with Signal-in-Space Ranging Error (SISRE) and Its Performances in Positioning and ZTD Estimation [PDF]

Sensors
The PPP-B2b service of BeiDou-3 enables real-time precise point positioning (RT-PPP) through correction information contained in B2b signals, circumventing the reliance on ground-based network infrastructures.
Guangxing Wang, Fen Li, Wenhai Zhou, Guo Chen, Zhiyong Zhu, Xiaomin Jia, Qing An   +6 more
doaj   +2 more sources

Accessing HIV Care to Irregular Migrants in Israel, 2019–2024 [PDF]

Viruses
In Israel, irregular migrants (IMs) living with human immunodeficiency virus (HIV-1) that have no access to regular health insurance are provided with HIV-1-related health coverage under a public–private partnership (PPP) program initiated by the ...
Tali Wagner, Zohar Mor, Yaakov Dickstein, Dan Turner, Eynat Kedem, Itzchak Levy, Anat Wieder-Finesod, Hila Elinav, Ibrahim Nasser Eddin, Karen Olshtain-Pops, Daniel Elbirt, Rozalia Smolyakov, Valery Istomin, Marina Wax, Yael Gozlan, Orna Mor   +15 more
doaj   +2 more sources

FAST CONVERGING LIDAR-AIDED PRECISE POINT POSITIONING: A CASE STUDY WITH LOW-COST GNSS [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
With the growing interest in autonomous driving, accurate vehicle positioning remains an open problem, especially in urban environments. According to regulatory organisations, the vehicle positioning accuracy is required to be centimetre-level.
J. Zhang, K. Khoshelham, A. Khodabandeh
doaj   +1 more source

Perbandingan Ketelitian GNSS dengan Metode NRTK, Real-Time PPP dan Post-Processed PPP

Journal of Geospatial Information Science and Engineering, 2022
Penelitian ini bertujuan untuk membandingkan ketelitian data koordinat tiga dimensi pengukuran GNSS dengan metode Network Real-Time Kinematik (NRTK), Real-Time Kinematik Precise Point Positioning (RTK-PPP) dan Precise Point Positioning (PPP) secara post ...
Syafril Ramadhon, FX. Yudi Tryono, Ihwan Fauzi, Gian Nugraha Pramudita   +3 more
doaj   +1 more source

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

GNSS Real–Time Precise Point Positioning in Arctic Northeast Passage

Journal of Marine Science and Engineering, 2022
Human activities in the Arctic regions have been increasing in recent years due to the impacts of climate change, such as Arctic Sea ice decline. For example, there has been an increase in Arctic shipping routes.
Mingwei Di, Bofeng Guo, Jie Ren, Xiang Wu, Zhaoyi Zhang, Yicheng Liu, Qingju Liu, Anmin Zhang   +7 more
doaj   +1 more source

Emerging Use of Public-Private Partnerships in Public Radiotherapy Facilities in Nigeria

JCO Global Oncology, 2021
PURPOSERadiotherapy (RT) treatment at public hospitals in Nigeria is often interrupted by prolonged periods of machine breakdown because of insufficient funds for maintenance and repair.
Chidinma P. Anakwenze Akinfenwa, Abiola Ibraheem, Kenneth Nwankwo, Nwamaka Lasebikan, Musa Ali-Gombe, Usman Malami Aliyu, Emmanuel Ikhile, Omobolanle Adegboyega, Adamu Abdullahi, Ann H. Klopp, Kathleen Schmeler, Lilie L. Lin, Anuja Jhingran, Brandi R. Page, Jim Leng, Surbhi Grover, Atara Ntekim   +16 more
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

Comprehensive assessment of real-time precise products from IGS analysis centers

Satellite Navigation, 2022
Real-Time Precise Point Positioning (RT-PPP) has been one of the research hotspots in GNSS (Global Navigation Satellite System) community for decades. Real-time precise products of satellite orbits and clocks are the prerequisite for RT-PPP.
Bofeng Li, Haibo Ge, Yuhang Bu, Yanning Zheng, Leitong Yuan   +4 more
doaj   +1 more source

Research on the Real-Time Ambiguity Resolution Algorithm of GPS/Galileo/BDS Based on CNES Real-Time Products

Remote Sensing, 2023
Real-Time (RT) Precise Point Positioning (PPP) uses precise satellite orbits and clock corrections, and employs a separate receiver for positioning. With the growing demand, RT PPP is becoming an increasingly popular research topic.
Meng Gao, Ziheng Meng, Huizhong Zhu, Aigong Xu, Zhihua Cao, Chunbo Tan   +5 more
doaj   +1 more source