Results 21 to 30 of about 6,131 (159)

Joint optimization based satellite handover strategy for low earth orbit satellite networks

IET Communications, 2021
Low earth orbit constellation satellite communication has the characteristics of low propagation delay, low path loss, low launch cost and wide range of applications.
Yifei Liu, Lang Feng, Liang Wu, Zaichen Zhang, Jian Dang, Bingcheng Zhu, Lei Wang   +6 more
doaj   +1 more source

Routing optimization based on topology control in satellite network

Tongxin xuebao, 2018
A new double-layer satellite network model for space networking was established and a routing algorithm based on topology control (TCRA) was proposed considering the advantages of low earth orbit and stationary earth orbit satellite networks.This model ...
Xiaogang QI, Jiulong MA, Lifang LIU
doaj   +2 more sources

Analytic Model for Low Earth Orbit Satellite Solar Power

IEEE Transactions on Aerospace and Electronic Systems, 2020
An analytic model for calculating the instantaneous and average orbital power available to a satellite in a circular low Earth orbit is presented. By accounting for the effects of angle of solar incidence and eclipsing, for both stabilized and tumbling satellites, this model allows for fast, simple, accurate calculations of available power without the ...
Grey, John Petrus, Mann, Ian R., Fleischauer, Michael D., Elliott, Duncan G.   +3 more
openaire   +1 more source

Handover Solutions for 5G Low-Earth Orbit Satellite Networks

IEEE Access, 2022
Low-Earth orbit (LEO) satellite networks are meant to be fundamental to closing the digital divide, enabling new market opportunities and providing fifth-generation (5G) New Radio (NR) connectivity everywhere at any time.
Enric Juan, Mads Lauridsen, Jeroen Wigard, Preben Mogensen   +3 more
doaj   +1 more source

Sustainability assessment of Low Earth Orbit (LEO) satellite broadband mega-constellations

, 2023
Abstract The growth of mega-constellations is rapidly increasing the number of rocket launches required to place new satellites in space. While Low Earth Orbit (LEO) broadband satellites help to connect unconnected communities and achieve the Sustainable Development Goals, there are also a range of negative environmental externalities, from the
Edward Oughton, Bonface Osoro, Andrew Wilson, Akhil Rao   +3 more
openaire   +2 more sources

Advancing Global Connectivity Through Low Earth Orbit Satellite Systems [PDF]

Iranian Journal of Information Processing & Management
Background: Satellite systems which orbit in Low Earth Orbit (LEO) are one of the innovative solutions to enable the connectivity in segregated geophysical parts of the world which are left out of the digital society, as they provide almost instantaneous,
Othman A. Hanshal, Suhad Qasim G. Haddad, Momunova Aigul Abdykerimovna, Hussain Kassim Ahmad, Faris Abdul Kareem Khazal   +4 more
doaj   +1 more source

Centimeter-Level Precise Orbit Determination for the Luojia-1A Satellite Using BeiDou Observations

Remote Sensing, 2020
Luojia-1A is a scientific experimental satellite operated by Wuhan University, which is the first low earth orbiter (LEO) navigation signal augmentation experimental satellite.
Lei Wang, Beizhen Xu, Wenju Fu, Ruizhi Chen, Tao Li, Yi Han, Haitao Zhou   +6 more
doaj   +1 more source

Research on Sliding-Window Batch Processing Orbit Determination Algorithm for Satellite-to-Satellite Tracking

Aerospace
In response to the increasing demand for high-precision navigation of satellites operating in the cislunar space, this study introduces an onboard orbit determination algorithm considering both convergence and computational efficiency, referred to as the
Yingjie Xu, Xuan Feng, Shuanglin Li, Jinghui Pu, Shixu Chen, Wenbin Wang   +5 more
doaj   +1 more source

Fuel Optimization for Low Earth Orbit Maintenance [PDF]

Journal of Astronomy and Space Sciences, 2008
The resolution of Earth images taken from a satellite has close relation with satellite's altitude. If a satellite has lower altitude, it gets a picture having better resolution.
Yong Jae Park, Sang-Young Park, Young-Rok Kim, Kyu-Hong Choi   +3 more
doaj   +1 more source

Autonomous Mission Planning Method for Optical Imaging Satellites Based on Real-Time Cloud Cover Information

Remote Sensing, 2022
Cloud cover is an important factor limiting the earth observation efficiency of optical imaging satellites. Existing solutions include avoiding cloudy observation time windows by onboard cloud detectors and ground monitors, which are difficult to improve
Zhiliang Li, Limin Zhao, Yun Liu, Xingfeng Chen, Hang Chen, Fengjie Zheng, Yunli Zhang, Donghong Wang, Jiaguo Li, Jun Liu, Shumin Liu   +10 more
doaj   +1 more source