Results 21 to 30 of about 2,232 (294)
Geo-spatial Information Science, 2022 In recent years, the large Low Earth Orbit (LEO) constellations have become a hot topic due to their great potential to improve the Global Navigation Satellite Systems (GNSS) positioning performance.
Xingxing Li +6 more
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Optimal Walker Constellation Design of LEO-Based Global Navigation and Augmentation System
Remote Sensing, 2020 Low Earth orbit (LEO) satellites located at altitudes of 500 km~1500 km can carry much stronger signals and move faster than medium Earth orbit (MEO) satellites at about a 20,000 km altitude.
Meiqian Guan +4 more
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Low-Orbit Large-Scale Communication Satellite Constellation Configuration Performance Assessment
International Journal of Aerospace Engineering, 2022 A constellation configuration performance evaluation method is proposed for the performance evaluation of the low-orbit large-scale communication satellite constellations.
Tianyu Sun, Min Hu, Chaoming Yun
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Logical topology-based routing in LEO constellations [PDF]
ICC 2001. IEEE International Conference on Communications. Conference Record (Cat. No.01CH37240), 2002 Satellite communication is distinguished by global coverage and the ability to support a wide range of applications. LEO (low Earth orbit) satellite systems employing inter-satellite links offer rich connectivity in space and provide direct broadband access and personal communication services.
Li, VOK, Hu, Y
openaire +2 more sources
On the Equivalence of LEO-SAR Constellations and Complex High-Orbit SAR Systems for the Monitoring of Large-Scale Processes [PDF]
, 2023 High Earth orbit Synthetic Aperture Radar (SAR) systems offer high temporal sampling and moderate spatial resolution on a global scale, potentially outperforming conventional Low Earth Orbit (LEO) systems in revisit times.
Matar, Jalal +3 more
core +1 more source
Remote Sensing, 2023 The global navigation satellite system (GNSS) is developing rapidly, and the related market applications and scientific research are increasing. Studies based on large low Earth orbit (LEO) satellite constellations have become research hotspots.
Baopeng Xu +8 more
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GNSS RTK Positioning Augmented with Large LEO Constellation
Remote Sensing, 2019 It is widely known that in real-time kinematic (RTK) solution, the convergence and ambiguity-fixed speeds are critical requirements to achieve centimeter-level positioning, especially in medium-to-long baselines.
Xingxing Li +5 more
doaj +1 more source
ns-3-leo: Evaluation Tool for Satellite Swarm Communication Protocols
IEEE Access, 2022 We present ns-3-leo, a module for the discrete event network simulator ns-3, which includes models for the network mobility and link characteristics of Low Earth Orbit (LEO) satellite mega-constellations.
Tim Schubert, Lars Wolf, Ulf Kulau
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Orbital Edge Offloading on Mega-LEO Satellite Constellations for Equal Access to Computing
, 2022 Mega-LEO satellite constellations are becoming a concrete reality. Companies such as SpaceX, Virgin Orbit, and OneWeb have already started launching hundreds of LEO satellites and are turning their services on.
Marchese M. +3 more
core +1 more source
Sensors, 2022 The railway sector has been characterized by important innovations regarding digital technologies for train-to-ground communications. The actual GSM-R system is considered an obsolescent technology expected to be dismissed by 2030.
Alessandro Vizzarri +2 more
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