Results 1 to 10 of about 864 (161)

LEO Small-Satellite Constellations for 5G and Beyond-5G Communications

IEEE Access, 2020
The next frontier towards truly ubiquitous connectivity is the use of Low Earth Orbit (LEO) small-satellite constellations to support 5G and Beyond-5G (B5G) networks. Besides enhanced mobile broadband (eMBB) and massive machine-type communications (mMTC),
Israel Leyva-Mayorga, BEATRIZ Soret, Maik Roper   +2 more
exaly   +3 more sources

A Scalable Solution for Node Mobility Problems in NDN-Based Massive LEO Constellations [PDF]

Sensors
In recent years, there has been increasing investment in the deployment of massive commercial Low Earth Orbit (LEO) constellations to provide global Internet connectivity.
Miguel Rodríguez Pérez, Sergio Herrería Alonso, José Carlos López Ardao, Andrés Suárez González   +3 more
doaj   +2 more sources

Improved PPP Ambiguity Resolution with the Assistance of Multiple LEO Constellations and Signals

Remote Sensing, 2019
The fusion of low earth orbit (LEO) constellation and Global Navigation Satellite Systems (GNSS) can increase the number of visible satellites and optimize spatial geometry, which is expected to improve the performance of precise point positioning (PPP ...
Xingxing Li, Fujian Ma, Yongqiang Yuan   +2 more
exaly   +3 more sources

Rethinking LEO constellations routing

International Journal of Satellite Communications and Networking
Summary This study investigates the unsplittable multicommodity flow (UMCF) as a routing algorithm for LEO constellations. Usually, LEO routing schemes enable the Floyd–Warshall algorithm (shortest path) to minimize the end‐to‐end latency of the flows crossing the constellation. We propose to solve the UMCF problem associated with the
JOSÉ Radzik, Emmanuel Lochin, Jérôme Lacan   +2 more
exaly   +3 more sources

Hierarchical Resource Management for Mega-LEO Satellite Constellation. [PDF]

Sensors (Basel)
The mega-low Earth orbit (LEO) satellite constellation is pivotal for the future of satellite Internet and 6G networks. In the mega-LEO satellite constellation system (MLSCS), which is the spatial distribution of satellites, global users, and their services, along with the utilization of global spectrum resources, significantly impacts resource ...
Gou L, Bian D, Nie Y, Zhang G, Zhou H, Shi Y, Zhang L.   +6 more
europepmc   +4 more sources

Characterization of Mega-Constellation Links for LEO Missions With Applications to EO and ISS Use Cases

IEEE Access, 2023
Satellite missions demand ever greater connectivity, especially in the LEO regime. In this paper, we introduce the new mega-constellation services in space paradigm: we show that mega-constellations, deployed to offer innovative services to Earth’ ...
Gabriel Maiolini Capez, Mauricio A. Caceres, Roberto Armellin, Chris P. Bridges, Stefan Frey, Roberto Garello, Pier Bargellini   +6 more
doaj   +1 more source

LEO Mega Constellations: Review of Development, Impact, Surveillance, and Governance

Space: Science & Technology, 2022
The rapid development of Low Earth Orbit (LEO) mega constellations has significantly contributed to several aspects of human scientific progress, such as communication, navigation, and remote sensing.
Jingrui Zhang, Yifan Cai, Chenbao Xue, Zhirun Xue, Han Cai   +4 more
doaj   +1 more source

Impacts of Orbital and Constellation Parameters on the Number and Spatiotemporal Coverage of LEO-LEO Occultation Events

Remote Sensing, 2021
The development of small-satellite technologies allows the low Earth orbit intersatellite link (LEO-LEO) occultation method to observe the Earth’s atmosphere with global coverage and acceptable costs using electromagnetic signals, in which the L/X/K/M ...
Congliang Liu, Gottfried Kirchengast, Yueqiang Sun, Veronika Proschek, Xin Wang, Longfei Tian, Qifei Du, Weihua Bai, Chunjun Wu, Peng Hu, Guangyuan Tan   +10 more
doaj   +1 more source

Capacity Analysis of LEO Mega-Constellation Networks [PDF]

IEEE Access, 2022
This paper proposes a complete network capacity analysis framework for low-earth-orbit (LEO) mega-constellations, where a network capacity estimation problem considering the link packet loss rate is formulated with the support of a time-variant network topology model and a task distribution model. This problem is solved in two steps.
Ningyuan Wang, Liang Liu, Zhaotao Qin, Bingyuan Liang, Dong Chen   +4 more
openaire   +2 more sources

Design optimisation of low earth orbit constellation based on BeiDou Satellite Navigation System precise point positioning

IET Radar, Sonar & Navigation, 2022
The use of low earth orbit (LEO) satellites to enhance the performance of global navigation satellite system navigation and positioning services has become a popular research topic.
Jing Liu, Jinming Hao, Yan Yang, Zheyu Xu, Weiping Liu, Renzhe Wu   +5 more
doaj   +1 more source