Results 41 to 50 of about 7,104 (160)

Analysis of B2b signal of BDS III satellite

Dianzi Jishu Yingyong, 2020
With the construction of BDS III satellite nearing completion, Beidou service will transition smoothly to be provided mainly by BDS III system. The B2b signal interface document was announced on December 27, 2019.
He Xulei, Liu Cheng, Chen Ying, Ba Xiaohui, Chen Jie   +4 more
doaj   +1 more source

Precise LEO orbit determination using regional PPP-B2b augmentation services

Measurement
Abstract The PPP-B2b service broadcasted by BDS-3 GEO satellites can provide centimeter to decimeter-level positioning accuracy in China and surrounding area. As a free satellite based-augmentation system, BDS PPP-B2b service also potentially benefits the low earth orbit (LEO) space users to improve the orbit determination accuracy.
Haitao Zhou, Lei Wang, Ruizhi Chen, Jiansheng Li, Mingjian Chen, Linyang Li, Wenju Fu, Kai Xiao   +7 more
openaire   +2 more sources

Advancing Precise Orbit Determination and Precise Point Positioning of BDS-3 Satellites from B1IB3I to B1CB2a: Comparison and Analysis

Remote Sensing, 2023
The third generation of the Chinese BeiDou Navigation Satellite System (BDS-3) broadcasts new signals, i.e., B1C, B2a, and B2b, along with the legacy signals of BDS-2 B1I and B3I.
Chen Wang, Tengjie Luo, Shitong Chen, Pan Li   +3 more
doaj   +1 more source

A New Strategy for Improving Multi‐Frequency PPP‐RTK Ionospheric Correction Availability and User Performance in Low‐ and Middle‐Latitudes

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract High‐precision regional ionospheric correction products are essential for achieving accurate and fast‐convergence solutions in Precise Point Positioning Real‐Time Kinematic (PPP‐RTK). For users in low‐ and middle‐latitudes, PPP‐RTK server narrow‐lane (NL) ambiguity resolution (AR) typically requires more than 10 min, which largely affects the ...
Pan Li, Shitong Chen, Jiahuan Hu, Xin Xie, Jiadi Dai, Bao Shu, Guanwen Huang   +6 more
wiley   +1 more source

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, Jiaxi Zhu, Zhilu Wu, Dejin Zhang, Zhao Li, Minsi Ao, Shengfeng Gu   +6 more
wiley   +1 more source

Viable service systems and decision making in service management [PDF]

, 2012
This paper addresses decision making in the management of complex service systems, highlighting the contribution of the viable systems approach as an interpretative and governance methodology based on systems thinking.
Ng Irene C. L., M. Saviano, Polese, Francesco, Di Nauta, Primiano, F. Polese, Saviano, Marialuisa, Barile S., Barile, Sergio, I. Ng, Ng, Irene C. L., Badinelli, Ralph, Di Nauta P., Badinelli R., Badinelli, Ralph D., R. Badinelli, P. Di Nauta, Nauta, Primiano Di   +16 more
core   +1 more source

Comparative Analysis of Mainstream ISB Stochastic Model Characteristics for Enhancing GNSS PPP With Wuhan University Precise Products

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

Third‐Party Market Cooperation and Non‐Chinese Multinational Enterprises' Participation in the Belt and Road Initiative in Sub‐Saharan Africa

Thunderbird International Business Review, Volume 67, Issue 6, Page 665-679, November/December 2025.
ABSTRACT Non‐Chinese multinational enterprises (MNE) are wondering whether China's Belt and Road Initiative (BRI) in Sub‐Saharan Africa (SSA) creates challenges or opportunities for them. The fuzzy term “third‐party market cooperation” was coined to involve non‐Chinese MNEs in BRI‐related business opportunities. Our contribution is threefold: First, we
Philipp von Carlowitz, Simon Züfle
wiley   +1 more source

Breeding for plant‐based proteins in pulse and legume crops: Perspectives, challenges and opportunities

Crop Science, Volume 65, Issue 4, July/August 2025.
Abstract The consumption of plant proteins is increasing worldwide as a viable alternative to animal‐derived proteins in the marketplace. The projected increase in global population to at least 10 billion by 2050 is placing greater pressure on the food supply, particularly due to the rising demand for large‐scale protein production.
H. A. Cordoba, R. Sadohara, K. K. Gali, J. Zhou, J. Hart, A. C. Silveira Alexandre, K. Cichy, J. Wilker, S. Dohle, C. Mukankusi, T. D. Warkentin, I. Rajcan, M. Eskandari, F. Marsolais, G. Vandemark, E. von Wettberg, D. Palanichamy, P. Thomassin, C. H. Diepenbrock, M. Nickerson, V. Orsat, J. M. Osorno, V. Hoyos‐Villegas   +22 more
wiley   +1 more source

Performance Evaluation of the Dual‐Frequency Ionospheric Free Combination on BDS‐3 Single Point Positioning Accuracy

Engineering Reports, Volume 7, Issue 7, July 2025.
Some stations have slightly larger errors in mid low latitude regions, while others have slightly smaller errors in high latitude regions. By comparing the B1C/B2a and B2b/B3I IFC SPP results of all 84 stations, it was found that the RMSE of all stations with B2b/B3I IFC was greater than that of B1C/B2a. ABSTRACT This article analyzes the BDS Phase III
Xingli Sun, Jinjie Yao
wiley   +1 more source