Results 11 to 20 of about 1,489 (276)

Study on Satellite Constellation Spare Strategy Based on Markov Process

open access: yesHangkong gongcheng jinzhan, 2022
In response to the issue of reducing satellite constellation backup costs while meeting constellation availability target,it is the hot issue in current research.In this paper,the impact of different spare strategies on the performance of a low earth ...
LUO Tiansu   +4 more
doaj   +1 more source

Optimal Progressive Pitch for OneWeb Constellation with Seamless Coverage

open access: yesSensors, 2022
Large-scale broadband low earth orbit (LEO) satellite systems have become a possibility due to decreased launch costs and rapidly evolving technology. Preventing huge LEO satellite constellations from interfering with the geostationary earth orbit (GSO ...
Cheng Zou   +5 more
doaj   +1 more source

Resource Allocation for LEO Beam-Hopping Satellites in a Spectrum Sharing Scenario

open access: yesIEEE Access, 2021
In recent years, low earth orbit (LEO) satellite constellation systems have been developed rapidly. However, the scarcity of satellite spectrum resources has become one of the major obstacles to this trend.
Jingyu Tang   +4 more
doaj   +1 more source

Study on remote sensing satellites random access to internet constellation and on-orbit intelligent processing

open access: yesDianxin kexue, 2022
The low earth orbit (LEO) satellite Internet constellation is a hot spot in current global research.And it is highly anticipated that the LEO satellite Internet constellation supports random access to remote sensing satellites and direct on-orbit ...
Xiaoyu CHANG   +5 more
doaj   +2 more sources

Inter-Plane Satellite Matching in Dense LEO Constellations [PDF]

open access: yes2019 IEEE Global Communications Conference (GLOBECOM), 2019
Dense constellations of Low Earth Orbit (LEO) small satellites are envisioned to make extensive use of the inter-satellite link (ISL). Within the same orbital plane, the inter-satellite distances are preserved and the links are rather stable. In contrast, the relative motion between planes makes the inter-plane ISL challenging.
Soret, Beatriz   +2 more
openaire   +2 more sources

Low-Orbit Large-Scale Communication Satellite Constellation Configuration Performance Assessment

open access: yesInternational 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
doaj   +1 more source

Connection Planning Method Between LEO Communication Constellation and Earth Station

open access: yes天地一体化信息网络, 2022
A connection planning method between LEO communication constellation and earth station was proposed.Considering the large number of LEO communication constellation satellites, it is diffi cult to directly establish the connection planning method between ...
Shuge ZHAO   +4 more
doaj   +2 more sources

Traffic simulation of broadband LEO constellation satellite communication system

open access: yesDianzi Jishu Yingyong, 2019
Due to the rapid development of small satellite technology,and the advantages of low earth orbit satellite(LEO) with low delay and low propagation loss as compared with the traditional geosynchronous orbit satellite(GEO), the broadband LEO constellation ...
Xu Jun, Lu Wei, Zhang Gengxin
doaj   +1 more source

Cost-Efficient LEO Navigation Augmentation Constellation Design under a Constrained Deployment Approach

open access: yesInternational Journal of Aerospace Engineering, 2021
The advantages of the Low Earth Orbit (LEO) satellite include low-latency communications, shorter positioning time, higher positioning accuracy, and lower launching, building, and maintenance costs.
Jing Ren   +4 more
doaj   +1 more source

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