Results 11 to 20 of about 2,232 (294)

Developing and experimenting with LEO satellite constellations in OMNeT++

CoRR, 2021
In this paper, we present our work in designing and implementing a LEO satellite constellation simulation model1 within OMNeT++ and INET, which is validated by comparing the results with existing work. Our model builds upon the fundamentals of the Open Source Satellite Simulator (OS$^3$), which was ported to INET 4.3.
Aiden Valentine, George Parisis
core   +4 more sources

A Performance Study on the Combination of Available GNSS and Potential LEO-PNT Constellations

IEEE Access
With the reduction in the launch and manufacturing costs of satellites, there has been a surge of interest in Low-Earth Orbit (LEO) satellites from both the industrial and academic sectors in recent years.
Kaan Celikbilek, Elena Simona Lohan
doaj   +2 more sources

Navigation Resource Allocation Algorithm for LEO Constellations Based on Dynamic Programming

Remote Sensing
Navigation resource allocation for low-earth-orbit (LEO) constellations refers to the optimal allocation of navigational assets when the number and allocation of satellites in the LEO constellation have been determined.
Sixin Wang, Xiaomei Tang, Jingyuan Li, Xinming Huang, Jiyang Liu, Jian Liu   +5 more
doaj   +2 more sources

Satellite-enabled LTE systems in LEO constellations [PDF]

2017 IEEE International Conference on Communications Workshops (ICC Workshops), 2017
LTE-based satellite systems in LEO constellations are a promising solution for extending broadband coverage to areas not connected to a terrestrial infrastructure. However, the large delays and Doppler shifts over the satellite channel pose severe technical challenges to a traditional LTE system.
Alessandro Guidotti, Alessandro Vanelli-Coralli, Màrius Caus, Joan Bas, Giulio Colavolpe, Tommaso Foggi, Stefano Cioni, Andrea Modenini, Daniele Tarchi   +8 more
openaire   +5 more sources

A Study of the Impact of Heterogeneous Low Earth Orbit (LEO) Constellations on Global Ionospheric Tomography Inversions

Atmosphere
The development of low earth orbit (LEO) satellites has provided the possibility to improve the accuracy of wide-area global navigation satellite system (GNSS) tomography; however, the existing LEO constellations were not designed to consider the effect ...
Yanwen Liu, Xingliang Huo, Ting Zhang, Yunbin Yuan   +3 more
doaj   +2 more sources

In-Space Computation Offloading for Multi-Layer LEO Constellations

, 2023
Non-terrestrial Networks (NTN) will play a key role in enabling a fully connected, digitized, and intelligent society through their integration into traditional terrestrial communication networks in the upcoming 6G world. The space-based Orbital Edge Computing (OEC) has already shown some promising results in terms of boosting the capacity, coverage ...
Swapnil Sadashiv Shinde, David Naseh, Daniele Tarchi   +2 more
openaire   +4 more sources

An analysis of close approaches and probability of collisions between LEO resident space objects and mega constellations

Geo-spatial Information Science, 2022
With the undergoing and planned implementations of mega constellations of thousands of Low Earth Orbiting (LEO) satellites, space will become even more congested for satellite operations.
Yan Zhang, Bin Li, Hongkang Liu, Jizhang Sang   +3 more
doaj   +1 more source

Design and Evaluation of Reconfigurable SDN LEO Constellations [PDF]

IEEE Transactions on Network and Service Management, 2020
In the context of the 5G ecosystem, the integration between the terrestrial and satellite networks is envisioned as a potential approach to further enhance the network capabilities. In light of this integration, the satellite community is revisiting its role in the next generation 5G networks.
Arled Papa, Tomaso de Cola, Petra Vizarreta, Mu He, Carmen Mas Machuca, Wolfgang Kellerer   +5 more
openaire   +2 more sources

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

Physical Layer Authentication for LEO Satellite Constellations

2022 IEEE Wireless Communications and Networking Conference (WCNC), 2022
Physical layer authentication (PLA) is the process of claiming identity of a node based on its physical layer characteristics such as channel fading or hardware imperfections. In this work, we propose a novel PLA method for the inter-satellite communication links (ISLs) of the LEO satellites.
Ozan Alp Topal, Gunes Karabulut-Kurt
openaire   +3 more sources