Results 21 to 30 of about 753 (114)

Research on hierarchical and sub‐area network control technology of LEO giant constellation

open access: yesIET Communications
The low‐earth‐orbit (LEO) telecommunication constellation network is foreseen as a merging interconnection method for future sixth‐generation (6G) systems.
Ci He, Yasheng Zhang, Yuejun Yu, Cong Li
doaj   +1 more source

Optimal design of the long-term LEO almanac by considering the atmosphere drag effects

open access: yesGeo-spatial Information Science
Almanac is an elegant design to help Global Navigation Satellite Systems (GNSS) signal acquisition, which has been adopted by all global satellite navigation systems. For the future low Earth orbit (LEO) navigation constellation, the almanac will be more
Xueli Guo, Lei Wang, You Li
doaj   +1 more source

LEO satellite constellation design with multi-QoS guarantee for non-terrestrial network

open access: yesTongxin xuebao, 2023
LEO satellite constellation (LSC) offers seamless and fast connectivity for non-terrestrial network (NTN).However, the lack of QoS guarantees for users significantly impacts the performance of the NTN system.Considering multi-QoS metrics, a capacity and ...
Ruyan WANG   +5 more
doaj   +2 more sources

A Semi-Analytical and Monte Carlo-Based Phase Dynamic Evolution Approach for LEO Mega-Constellations

open access: yesAerospace, 2022
In recent years, with the reduction of the cost of microsatellites, the development of commercial rockets and the multi-satellite launching technology, the construction of large-scale constellations in low-Earth orbit (Mega-Constellations) has become a ...
Bo Su, Qingrui Zhou
doaj   +1 more source

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

open access: yesIET 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   +5 more
doaj   +1 more source

LEO mega-constellation network:networking technologies and state of the art

open access: yesTongxin xuebao, 2022
The emerging low earth orbit (LEO) mega-constellation network (MCN) represented by Starlink and OneWeb were studied.The system architecture and basic working modes were introduced, and the main features of the emerging broadband MCN were summarized.Based
Quan CHEN   +5 more
doaj   +2 more sources

Demand and key technology for a LEO constellation as augmentation of satellite navigation systems

open access: yesSatellite Navigation
A Low Earth Orbit (LEO) constellation augmenting satellite navigation is important in the future development of Global Navigation Satellite System (GNSS).
Yuanxi Yang   +4 more
doaj   +1 more source

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

open access: yesIEEE 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   +1 more source

Autonomous Orbit Determination for a Hybrid Constellation

open access: yesInternational Journal of Aerospace Engineering, 2018
A new orbit determination scheme targeting communication and remote sensing satellites in a hybrid constellation is investigated in this paper. We first design one such hybrid constellation with a two-layer configuration (LEO/MEO) by optimizing coverage ...
Muzi Li, Bo Xu, Jun Sun
doaj   +1 more source

Multi-Constellation Software-Defined Receiver for Doppler Positioning with LEO Satellites

open access: yesSensors, 2020
A Multi-Constellation Software-Defined Receiver (MC-SDR) is designed and implemented to extract the Doppler measurements of Low Earth Orbit (LEO) satellite’s downlink signals, such as Orbcomm, Iridium-Next, Globalstar, Starlink, OneWeb, SpaceX, etc.
Farzan Farhangian, René Landry
doaj   +1 more source

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