Results 91 to 100 of about 90,342 (256)

Path‐Based Deep Reinforcement Learning for On‐Board Routing in Satellite Constellation Networks

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Efficient usage of available network resources is a crucial factor for broadband services in interconnected satellite constellations. To meet required quality of service standards under heavy network loads, it is essential to optimize traffic distribution among the intersatellite links. To address this challenge, we propose an adaptive traffic
Manuel M. H. Roth, Thomas Jerkovits, Anupama Hegde, Thomas Delamotte, Andreas Knopp   +4 more
wiley   +1 more source

SUCCESS RATES FOR INTEGRATED GPS AND GALILEO AMBIGUITY RESOLUTION [PDF]

Revista Brasileira de Cartografia, 2002
Modernized GPS and the future European Galileo system will offer unprecedented accuracy and availability for precise positioning applications. For these applications, the ambiguities of the carrier observations have to be resolved to their integer values.
Kees de Jong
doaj  

Tracing Three Decades of Low Earth Orbit Satellite Communication Development: A Bibliometric and Main Path Analysis of Network Architectures, Protocol Evolution, and Emerging Intelligent Services

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Low Earth Orbit (LEO) satellite communication systems have evolved into a critical component of global broadband networks, enabling wide‐area connectivity, IoT services, and intelligent multilayer satellite–terrestrial integration. Despite rapid advancements in constellation deployment, routing mechanisms, resource management, and LEO–5G/6G ...
Wei‐Hao Su, Ya‐Chen Chuang, Long‐Sheng Chen   +2 more
wiley   +1 more source

An integer ambiguity clustering estimator for real-time precise point positioning

Geo-spatial Information Science
Real-time precise point positioning with ambiguity resolution (PPP-AR) is considered a valuable positioning tool applicable in various fields. Limited by the precision and stability of real-time satellite products and observation streams, it is ...
Kunlun Zhang, Jianghui Geng, Guangcai Li, Jiang Guo   +3 more
doaj   +1 more source

Optimal Carrier-Phase Integer Combinations for Modernized Triple-Frequency BDS in Precise Point Positioning

IEEE Access, 2019
The latest generation of Global Navigation Satellite System (GNSS) satellites are transmitting signals on three or more frequencies, it brings new opportunities and challenges for data integration in Multi-GNSS Experiment (MGEX).
Honglei Qin, Peng Liu, Jiaqing Qu, Li Cong   +3 more
doaj   +1 more source

Leading Sustainable Competitive Advantage From Within: An Analysis of the Mining Industry

Sustainable Development, EarlyView.
ABSTRACT Sustainability has emerged as a critical global challenge, compelling industries to integrate environmental considerations into their core strategies. The main objective of this study is to examine the direct influence of green transformational leadership and the mediating roles of green knowledge management and green motivation in achieving a
Zhadyra Konurbayeva, Eduardo Sánchez‐García, Bartolomé Marco‐Lajara, Jolanta Sloniec, Javier Martínez‐Falcó, Gulzhan Baitikenova   +5 more
wiley   +1 more source

Regional Sustainability Assessment Under Risk and Uncertainty: A Water–Energy–Food Based Framework

Sustainable Development, EarlyView.
ABSTRACT Regional sustainability assessment requires integrated structures that can examine the interactions between Water–Energy–Food (WEF) systems, socio‐economic risk conditions, and performance outcomes under uncertainty. This study proposes a multidimensional framework that combines a suitability index, composite sustainability indicators ...
Murat Oturakci
wiley   +1 more source

Detailed Investigation on Ambiguity Validation of Long-Distance RTK

Remote Sensing
Long-distance Real-Time Kinematic (RTK) positioning is crucial for applications in remote areas, such as maritime environments. Achieving 2–3 cm accuracy with RTK requires successful ambiguity resolution, which involves two main steps: identifying the ...
Shengyue Ji, Jing Wang, Duojie Weng, Wu Chen   +3 more
doaj   +1 more source

A Partial Carrier Phase Integer Ambiguity Fixing Algorithm for Combinatorial Optimization between Network RTK Reference Stations. [PDF]

Sensors (Basel), 2021
Wang S, You Z, Sun X.
europepmc   +1 more source

From Resilience to “Susilience”: Toward Further Theoretical Perspectives in Sustainable Supply Chains

Sustainable Development, EarlyView.
ABSTRACT The increasing exposure of global supply chains to environmental, social, and operational disruptions has intensified scholarly interest in sustainability and resilience. While these concepts are widely discussed, existing research often addresses them separately, preventing understanding of their combined role in supply chain management.
Mahmut Mollaoglu, Bükra Doganer
wiley   +1 more source