Results 1 to 10 of about 937 (251)

Optimal Walker Constellation Design of LEO-Based Global Navigation and Augmentation System [PDF]

Remote Sensing, 2020
Low Earth orbit (LEO) satellites located at altitudes of 500 km~1500 km can carry much stronger signals and move faster than medium Earth orbit (MEO) satellites at about a 20,000 km altitude.
Meiqian Guan, Tianhe Xu, Fan Gao, Wenfeng Nie, Honglei Yang   +4 more
doaj   +4 more sources

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

Remote 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, Gottfried Kirchengast, Yueqiang Sun, Veronika Proschek, Xin Wang, Longfei Tian, Qifei Du, Weihua Bai, Chunjun Wu, Peng Hu, Guangyuan Tan   +10 more
doaj   +3 more sources

Optimization of a LEO‐PNT Constellation: Design Considerations and Open Challenges

International Journal of Satellite Communications and Networking
ABSTRACT As the satellite launch and manufacturing costs have become affordable, the industrial and academic interest in low‐Earth orbit (LEO) satellites has increased in recent years. With this interest, the concept of LEO‐based positioning, navigation, and timing (LEO‐PNT) has also gained popularity as a complementary and/or ...
Kaan Celikbilek
exaly   +3 more sources

Research on Design and Staged Deployment of LEO Navigation Constellation for MEO Navigation Satellite Failure

Remote Sensing
Low Earth orbit (LEO) satellites have unique advantages in navigation because of their high signal intensity and rapid geometric changes in a short period.
Wen Xue, Min Hu, Yongjing Ruan, Xun Wang, Moyao Yu   +4 more
doaj   +3 more sources

Design and performance evaluation of a novel ranging signal based on an LEO satellite communication constellation

Geo-spatial Information Science, 2023
Driven by improvements in satellite internet and Low Earth Orbit (LEO) navigation augmentation, the integration of communication and navigation has become increasingly common, and further improving navigation capabilities based on communication ...
Jingfang Su, Jia Su, Qingwu Yi, Cailun Wu, Weimin Hou   +4 more
doaj   +3 more sources

Get the MOST Out of LEO Satellite Constellations Topology Design

IEEE Open Journal of the Communications Society
As Low-Earth Orbit (LEO) satellite deployments scale to thousands of nodes, the design of satellite network topologies becomes increasingly complex yet critical for achieving the desired performance. Since each LEO satellite can only provide service to a
Robert Esswein, Quincy Bayer, Samuel Mergendahl, Mai Abdelhakim, Robert K. Cunningham   +4 more
doaj   +2 more sources

Towards Efficient LEO-Constellation Design for Regional PNT Services

Journal of Communications Software and Systems
The growing availability of low-cost positioning technologies enables broader access to advanced Positioning, Navigation, and Timing (PNT) services for regional and global applications.
Elena Simona Lohan, Kaan Celikbilek, Oana Cramariuc   +2 more
doaj   +3 more sources

Design and Evaluation of Reconfigurable SDN LEO Constellations [PDF]

IEEE Transactions on Network and Service Management, 2020
In the context of the 5G ecosystem, the integration between the terrestrial and satellite networks is envisioned as a potential approach to further enhance the network capabilities. In light of this integration, the satellite community is revisiting its role in the next generation 5G networks.
Arled Papa, Tomaso de Cola, Petra Vizarreta, Mu He, Carmen Mas Machuca, Wolfgang Kellerer   +5 more
openaire   +2 more sources

Analytical design and performance analysis of LEO mega chain satellite constellation

Xibei Gongye Daxue Xuebao, 2022
With the development of microsatellite technology and the growth of ground reconnaissance demand, the rapid design of a LEO constellation with minimum satellite number, low revisit time (within 10 minutes), and permanent inter-satellite links has become ...
ZHENG Pengfei, CHEN Hongyu, GUO Chongbin
doaj   +1 more source

Cross-Domain Fusion Constellation Design of Communication, Navigation and Remote Sensing

Applied Sciences, 2023
Low earth orbit (LEO) mega-constellations have once again triggered a wave of space-based system construction. On the one hand, LEO communication, LEO navigation, LEO remote sensing constellations and so on are proposed.
Junxiang Qin, Xuan Li, Xiaotian Ma, Xiye Guo, Jun Yang   +4 more
doaj   +1 more source