Search Results - "Leo

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    LEO Satellite Clock Modeling and Its Benefits for LEO Kinematic POD by Wang, K., El-Mowafy, Ahmed, Yang, X.

    Published 2023
    “…High-accuracy Low Earth Orbit (LEO) satellite clock and orbital products are preconditions to realize LEO augmentation for high-accuracy GNSS-based positioning on the ground. …”
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    Space Debris Low Earth Orbit (LEO) by Ahmed Mohamed, Fatima, Mohamad Ali, Noor Azian

    Published 2015
    “…The main question this paper tries to address is why LEO orbit has the most number of debris and the impact of the growth to the future.…”
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    Traffic management algorithms for LEO satellite networks by Huyop @ Ayop, Fahrul Hakim

    Published 2016
    “…Traffic management for Low Earth Orbit (LEO) satellite networks deals with the process of monitoring the network activities by allocating certain traffic into the right path and increasing the throughput rate for the sake of performance and efficiency. …”
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    Bridging clock gaps in Mega-Constellation LEO satellites by Wang, Kan, El-Mowafy, Ahmed, Rizos, Chris

    Published 2022
    “…To realize the benefits brought by these LEO satellites, their precise orbits and clocks need to be delivered to users, which would typically be based on processing the GNSS signals collected onboard LEO satellites. …”
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    LEO satellite clock analysis and prediction for positioning applications by Wang, Kan, El-Mowafy, Ahmed

    Published 2021
    “…The positioning service aided by low Earth orbit (LEO) mega-constellations has become a hot topic in recent years. …”
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    Optimisation of congestion window for TCP adaptation to LEO satellite networks by Abdalla, M. S., Abdelrahman, A.M., Ali, B. M.

    Published 2004
    “…An optimum mechanism is proposed to adjust congestion window size for enhancing transmission control protocol (TCP) in low earth orbit (LEO) satellite networks. The proposed mechanism adapts between fast throughput recovery and severe congestion avoidance by considering losses in two successive windows. …”
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    URE and URA for Predicted LEO satellites Orbits at different altitudes by Wang, Kan, El-Mowafy, Ahmed, Yang, X.

    Published 2022
    “…In recent years, low Earth orbit (LEO) satellites have been frequently discussed for their benefits in positioning and navigation services as an augmentation to the global navigation satellite systems (GNSSs). …”
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    Visibility of LEO satellites under different ground network distributions by Wang, Kan, Yang, Xuhai, El-Mowafy, Ahmed

    Published 2022
    “…The higher number of LEO satellites and their much smaller footprints than those of the GNSS satellites motivate studies of the ground tracking network design to pursue higher visibilities to LEO satellites. …”
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    Attitude determination of LEO satellites using an array of GNSS sensors by Nandakumaran, Nadarajah, Teunissen, Peter, Buist, P.

    Published 2012
    “…In this contribution we explore the potential of GNSS-based attitude determination for Low Earth orbiting (LEO) formation flying Synthetic Aperture Radar (SAR) satellites. …”
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    QoS Simulation and analysis of HTTP over LEO satellite constellation by Audah, Lukman, Sun, Zhili, Cruickshank, Haitham

    Published 2012
    “…In this paper, we present an end-to-end QoS simulation studies on internetworking of remote LAN and long range communications over LEO-Iridium satellites constellation taking SuperJARING network in Malaysia as an example. …”
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    QoS simulation and analysis of HTTP over LEO satellite constellation by Audah, Lukman, Sun, Zhili, Cruickshank, Haitham

    Published 2012
    “…In this paper, we present an end-to-end QoS simulation studies on internetworking of remote LAN and long range communications over LEO-Iridium satellites constellation taking SuperJARING network in Malaysia as an example. …”
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    GPS/Galileo simulation for reduced dynamic LEO satellite orbit determination by Farah, Ashraf Mohamed Ahmed

    Published 2004
    “…GPS already delivers high quality position information for LEO satellite orbits such as Topex/Poseidon (1992- present). …”
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    LEO Augmentation in Large-Scale Ionosphere-Float PPP-RTK Positioning by Wang, K., El-Mowafy, Ahmed, Cheng, F., Yang, X.

    Published 2024
    “…Using 30-s real dual-frequency Global Positioning System (GPS) and Beidou Navigation Satellite System (BDS) observations within a large-scale network of thousands of kilometers, this contribution tests the effects of LEO augmentation using simulated dual-frequency LEO signals from the navigation-oriented LEO constellation, CentiSpace. …”
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    Proposed Orbital Products for Positioning Using Mega-Constellation LEO Satellites by Wang, Kan, El-Mowafy, Ahmed

    Published 2020
    “…With thousands of low Earth orbit (LEO) satellites to be launched in the near future, LEO mega-constellations are supposed to significantly change the positioning and navigation service for ground users. …”
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