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On routing for extending satellite service life in LEO satellite networks [PDF]

2014 IEEE Global Communications Conference, 2014
We address the problem of routing for extending the service life of satellites in Iridium-like LEO constellations. Satellites in LEO constellations can spend over 30% of their time under the earth's umbra, time during which they are powered by batteries. While the batteries are recharged by solar energy, the depth of discharge they reach during eclipse
Mohammed Hussein, Gentian Jakllari, Béatrice Paillassa   +2 more
openaire   +2 more sources

Integrated precise orbit determination for LEO constellation and BDS-3 MEO satellites using inter-satellite links and onboard BDS-3 observations

Satellite Navigation
By leveraging the high-precision spatial reference established with Global Navigation Satellite System (GNSS), we propose a low-ground-dependency and low-latency Precise Orbit Determination (POD) method employing onboard GNSS, Inter-Satellite Link (ISL ...
Geer Qin, Kecai Jiang, Min Li, Qile Zhao, Xin Xie, Youcun Wang, Chao Yang, Yubin Wang, Chuntao Chang   +8 more
doaj   +1 more source

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 ...
Xin Li, Xingxing Li, Fujian Ma, Yongqiang Yuan, Keke Zhang, Feng Zhou, Xiaohong Zhang   +6 more
doaj   +1 more source

GaliLEO: A Simulation Tool for LEO Satellite Constellations [PDF]

SIMULATION, 2002
The authors present GaliLEO, a simulator for the transmission of connection-oriented traffic over a constellation of LEO/MEO (low/medium earth orbit) satellites. Its scope is limited to the satellites and the stations accessing them, without any modelling of the terrestrial network, but inside this scope the goal is to study the performance of ...
Potorti' F., Franck L.
openaire   +5 more sources

LEO Precise Orbit Determination with Inter-satellite Links

Remote Sensing, 2019
Traditional precise orbit determination (POD) for low Earth orbit (LEO) satellites relies on observations from ground stations and onboard receivers.
Xingxing Li, Zihao Jiang, Fujian Ma, Hongbo Lv, Yongqiang Yuan, Xin Li   +5 more
doaj   +1 more source

LEO-Constellation-Augmented BDS Precise Orbit Determination Considering Spaceborne Observational Errors

Remote Sensing, 2021
The precise orbit determination (POD) accuracy of the Chinese BeiDou Navigation Satellite System (BDS) is still not comparable to that of the Global Positioning System because of the unfavorable geometry of the BDS and the uneven distribution of BDS ...
Min Li, Tianhe Xu, Haibo Ge, Meiqian Guan, Honglei Yang, Zhenlong Fang, Fan Gao   +6 more
doaj   +1 more source

Democratizing LEO Satellite Network Measurement

ACM SIGMETRICS Performance Evaluation Review
Low Earth Orbit (LEO) satellite networks are quickly gaining traction with promises of impressively low latency, high bandwidth, and global reach. However, the research community knows relatively little about their operation and performance in practice. The obscurity is largely due to the high barrier of entry for measuring LEO networks, which requires
Liz Izhikevich, Manda Tran, Katherine Izhikevich, Gautam Akiwate, Zakir Durumeric   +4 more
openaire   +2 more sources

Impact of Solar Irradiance on Low-Earth-Orbit Satellite Orbital Decay During Geomagnetic Storm

Aerospace
In recent years, with the rapid expansion of low-Earth-orbit (LEO) satellite constellations, the orbital decay of LEO satellites caused by atmospheric heating from solar irradiance and geomagnetic activity has become increasingly prominent.
Haiquan Yu, Lue Chen, Bo Chen
doaj   +1 more source

Carbon Nanocomposites in Aerospace Technology: A Way to Protect Low-Orbit Satellites

Nanomaterials, 2023
Recent advancements in space technology and reduced launching cost led companies, defence and government organisations to turn their attention to low Earth orbit (LEO) and very low Earth orbit (VLEO) satellites, for they offer significant advantages over
Janith Weerasinghe, Karthika Prasad, Joice Mathew, Eduardo Trifoni, Oleg Baranov, Igor Levchenko, Kateryna Bazaka   +6 more
doaj   +1 more source

Multiservice on-demand routing in LEO satellite networks [PDF]

IEEE Transactions on Wireless Communications, 2009
In this paper, a distributed on-demand routing protocol for Low Earth Orbit (LEO) satellite systems, named multiservice on-demand routing (MOR), is proposed and evaluated. The proposed protocol adjusts the routing procedure to the QoS requirements of different traffic classes.
Karapantazis, S., Papapetrou, E., Pavlidou, F. N.   +2 more
openaire   +2 more sources