CONSTELLATION

作品数:186被引量:457H指数:10
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相关作者:徐丽芳丛挺张永红龙艳马晶更多>>
相关机构:武汉大学中国测绘科学研究院广东工学院第三军医大学大坪医院更多>>
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Resilient satellite-based PNT system design and key technologies
《Science China Earth Sciences》2025年第3期669-682,共14页Yuanxi YANG Zheng YAO Yue MAO Tianhe XU Dixing WANG 
supported by the National Natural Science Foundation of China (Grant Nos. 42388102, 42274018)。
Satellite-based positioning navigation and timing(PNT) system is the most fundamental and convenient application system in PNT fields now and in the future, thus the satellite-based PNT service system should be more a...
关键词:BeiDou navigation constellation Resilient navigation constellation Resilient PNT service Resilient signal modulation Adaptive signal power 
Innovations and prospects of the tetrahedral constellation gravitational wave observatory
《Science China(Physics,Mechanics & Astronomy)》2025年第2期195-196,共2页Zhi-Ming Cai Zhong-Guang Yang 
Gravitational wave astronomy has opened a new window to the universe,allowing us to explore cosmic phenomena with unprecedented precision.Current detectors like LIGO[1],Virgo[1],KAGRA[1],LISA[2],Taiji[3],and Tian Qin[...
关键词:GRAVITATIONAL UNIVERSE wave 
Advancing gravitational theory through the tetrahedral constellation gravitational wave observatory
《Science China(Physics,Mechanics & Astronomy)》2025年第2期197-198,共2页Yun-Yong Wang Zhou-Jian Cao 
The Tetrahedral Constellation Gravitational Wave Observatory(TEGO)[1]represents a significant leap forward in gravitational wave detection,advancing our understanding of gravitational theory.By introducing a fourth sp...
关键词:wave POLARIZATION THEORY 
Azimuth-based antenna group delay variation modeling for dual-frequency multi-constellation GBAS
《Chinese Journal of Aeronautics》2025年第2期370-380,共11页Yuan LIU Yanbo ZHU Kun FANG Zhipeng WANG 
the National Key Research and Development Program of China(No.2023YFB3907001);the financial support from the National Natural Science Foundation of China(Nos.62371029,U2233217 and 62101019);the Civil Aviation Security Capacity Building Fund Project of China(Nos.CAAC Contract 2021(77)and CAAC Contract 2022(110)).
Antenna Group Delay Variation(AGDV)is a hardware error source that affects the performance of Dual-Frequency Multi-Constellation(DFMC)Ground-based Augmentation System(GBAS),and these errors are difficult to distinguis...
关键词:Antenna Group Delay Variation(AGDV) Ground-based Augmentation System(GBAS) Integrity Vertical protection level Navigation 
Tetrahedron constellation of gravitational wave observatory
《Science China(Physics,Mechanics & Astronomy)》2025年第2期86-93,共8页Hong-Bo Jin Cong-Feng Qiao 
supported by the Fundamental Research Funds for the Central Universities;the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant Nos.XDA15020701 and XDA15020708)。
For the first time,we have introduced the tetrahedron constellation of gravitational wave observatory(TEGO)composed of four identical spacecrafts(S/Cs).The laser telescopes and their pointing structures are mounted on...
关键词:gravitational wave detectors and experiments gravitational waves experimental tests of gravitational theories experimental studies of gravity 
Joint Optimization of Precoding and Constellation Shaping for Faster-than-Nyquist Signaling
《China Communications》2024年第11期141-149,共9页Kang Weimin 
supported by Fundamental Research Program of Shanxi Province(202203021212159)。
Faster-than-Nyquist(FTN)signaling is a potential scheme for the sixth generation(6G)communication system to improve the spectral efficiency(SE).In this paper,we propose a joint optimization algorithm of precoding and ...
关键词:constellation shaping faster-than-Nyquist PRECODING spectral efficiency 
High-precision analytical solutions for Earth coverage of constellation equipped with reentry glide vehicles被引量:1
《Chinese Journal of Aeronautics》2024年第9期385-398,共14页Ping MA Weibo SUN Jie GAO Tao CHAO 
supported by the National Natural Science Foundation of China (No.62273119).
To efficiently and accurately design satellite constellations equipped with Reentry Glide Vehicles(RGVs),new analytical solutions are developed for calculating their coverage perfor-mance.Specifically,a new coverage m...
关键词:CONSTELLATION Analytical solutions Reentry glide vehicle Reentry reachable domain Two-dimensional map 
Kullback-Leibler Divergence Based ISAC Constellation and Beamforming Design in the Presence of Clutter
《ZTE Communications》2024年第3期4-12,共9页TANG Shuntian WANG Xinyi XIA Fanghao FEI Zesong 
supported in part by National Key R&D Program of China under Grant No.2021YFB2900200;in part by National Natural Science Foundation of China under Grant Nos.U20B2039 and 62301032;in part by China Postdoctoral Science Foundation under Grant No.2023TQ0028.
Integrated sensing and communication(ISAC)is regarded as a pivotal technology for 6G communication.In this paper,we employ Kullback-Leibler divergence(KLD)as the unified performance metric for ISAC systems and investi...
关键词:constellation design clutter suppression integrated sensing and communications Kullback-Leibler divergence 
Dynamic access task scheduling of LEO constellation based on space-based distributed computing
《Journal of Systems Engineering and Electronics》2024年第4期842-854,共13页LIU Wei JIN Yifeng ZHANG Lei GAO Zihe TAO Ying 
This work was supported by the National Key Research and Development Program of China(2021YFB2900603);the National Natural Science Foundation of China(61831008).
A dynamic multi-beam resource allocation algorithm for large low Earth orbit(LEO)constellation based on on-board distributed computing is proposed in this paper.The allocation is a combinatorial optimization process u...
关键词:beam resource allocation distributed computing low Earth obbit(LEO)constellation spacecraft access task scheduling 
Progress of Radiation Belt Exploration by a Constellation of Small Satellites TGCSS/SGRB, COSPAR
《空间科学学报》2024年第4期746-750,共5页WU Ji YANG Xiaochao DAI Lei DENG Li 
A COnstellation of Radiation BElt Survey(CORBES)program is proposed by the Sub-Group on Radiation Belt(SGRB)of TGCSS,COSPAR.To address the open qustions about the dynamics of the Earth’s radiation belt,CORBES mission...
关键词:Radiation belts Ultra-fast survey CONSTELLATION 
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