Results 11 to 20 of about 2,036 (280)

Analysis on BDS-3 Autonomous Navigation Performance Based on the LEO Constellation and Regional Stations

open access: yesRemote 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
doaj   +2 more sources

LEO-Based Satellite Constellation for Moving Target Detection [PDF]

open access: yesRemote Sensing, 2022
With the rapid development of cooperative detection technology, target fusion detection with regard of LEO satellites can be realized by means of their diverse observation configurations. However, the existing constant false alarm ratio (CFAR) detection research rarely involves the space-based target fusion detection theory.
Chongdi Duan   +3 more
openaire   +3 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   +2 more sources

Dynamic beam shut-off algorithm for LEO satellite constellation [PDF]

open access: yesTongxin xuebao, 2020
Aiming at the problems of the relatively dense coverage of the satellites in the space segment of the low earth orbit (LEO) multibeam satellite constellation network,which resulted in relatively dense areas in some regions,causing severe inter-beam ...
Shuaijun LIU   +4 more
doaj   +4 more sources

Impacts of Orbital and Constellation Parameters on the Number and Spatiotemporal Coverage of LEO-LEO Occultation Events

open access: yesRemote Sensing, 2021
The development of small-satellite technologies allows the low Earth orbit intersatellite link (LEO-LEO) occultation method to observe the Earth’s atmosphere with global coverage and acceptable costs using electromagnetic signals, in which the L/X/K/M ...
Congliang Liu   +10 more
doaj   +2 more sources

Cache Placement in an NDN-Based LEO Satellite Network Constellation

open access: yesIEEE Transactions on Aerospace and Electronic Systems, 2023
9 pages, 5 ...
Miguel Rodríguez-Pérez   +4 more
openaire   +4 more sources

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   +2 more sources

LEO Constellations Satellite Selection Methods for Navigation Satellite Failure

open access: yes天地一体化信息网络
The MEO navigation constellation confronts the issue of deteriorated navigation performance in the circumstances of satellite decommissioning and signal interference.
XUE Wen   +4 more
doaj   +2 more sources

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

Exploiting topology awareness for routing in LEO satellite constellations [PDF]

open access: yes2021 IEEE Global Communications Conference (GLOBECOM), 2021
Low Earth Orbit (LEO) satellite constellations combine great flexibility and global coverage with short propagation delays when compared to satellites deployed in higher orbits. However, the fast movement of the individual satellites makes inter-satellite routing a complex and dynamic problem. In this paper, we investigate the limits of unipath routing
Jonas W. Rabjerg   +3 more
openaire   +3 more sources

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