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    Architecture Design and Key Technologies Analysis of LEO Satellite Mega-Constellations by Zihe GAO, Haipeng YAO, Lei ZHANG, Yulin SHI, Fu WANG, Ying TAO

    Published 2024-06-01
    “…The large number of network elements in the mega-constellations pose a severe challenge to the existing network architecture and technical system.Based on the concept and characteristics of constellation architecture, combined with the development of domestic and foreign satellite constellations and technology prediction, a multi-layer and multi-domain hybrid intelligent cooperative network architecture was proposed, which consist of four layers (perception plane, data plane, control plane, intelligent management plane) and three layers (resource layer, transport layer, service layer) , the architecture of constellation network management and control, technology reference model and protocol architecture were designed.At the same time, accorded to the construction and development trend of constellation, this paper expounded and analyzed the evolution trend of the key technologies, such as constellation network addressing and routing, network robust agile guarantee, differentiated service bearing, end-to-end reliable transmission, etc.The research results could support the development and construction of LEO giant constellation network in our country.…”
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    A Branch and Bound Algorithm for Agile Earth Observation Satellite Scheduling by Xiaogeng Chu, Yuning Chen, Lining Xing

    Published 2017-01-01
    “…The agile earth observing satellite scheduling (AEOSS) problem consists of scheduling a subset of images among a set of candidates that satisfy imperative constraints and maximize a gain function. …”
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    A Hybrid Genetic Algorithm for Satellite Image Downlink Scheduling Problem by Bingyu Song, Feng Yao, Yuning Chen, Yingguo Chen, Yingwu Chen

    Published 2018-01-01
    “…The satellite image downlink scheduling problem (SIDSP) is included in satellite mission planning as an important part. …”
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    Dynamics and Control of Tethered Satellite System in Elliptical Orbits under Resonances by Zhaojun Pang, Zhonghua Du, Chun Cheng, Qingtao Wang

    Published 2020-01-01
    “…This paper studies resonance motions of a tethered satellite system (TSS) in elliptical orbits. A perturbation analysis is carried out to obtain all possible resonance types and corresponding parameter relations, including internal resonances and parametrically excited resonances. …”
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    IDMA-Based MAC Protocol for Satellite Networks with Consideration on Channel Quality by Gongliang Liu, Xinrui Fang, Wenjing Kang

    Published 2014-01-01
    “…In order to overcome the shortcomings of existing medium access control (MAC) protocols based on TDMA or CDMA in satellite networks, interleave division multiple access (IDMA) technique is introduced into satellite communication networks. …”
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  16. 276

    Beamforming algorithm for cognitive satellite and terrestrial network based on UAV relay by Yanli LI, Zhi LIN, Zining WANG, Ba XU, Ming CHENG, Jian OUYANG

    Published 2021-08-01
    Subjects: “…cognitive satellite and terrestrial network…”
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    Research on Strategies and Technologies for Resource Management and Control of Heterogeneous Network of High and Low Orbit Satellites by Meirong ZHANG, Mengting HAO, Chuang WANG, Gengxin ZHANG

    Published 2021-12-01
    “…With the vigorous development of space communication technology and the continuous advancement of space-integrated-ground information network, satellite communication networks resource management and control is becoming more and more complex.Due to the scarcity of satellite resources, the slowness of resource scheduling compared to the status refreshing, and uneven distribution of business, eff ciently managing resources has become one of urgent problems to be solved in the development of satellite communications.In view of the heterogeneous network system architecture of high and low orbit satellites, the challenges, its network resource management and control facing, were analyzed.Integrating on the basis of traditional management and control architecture, the collaborative management and control architecture based on group management was introduced.The management strategy of satellite network virtual resource pool was explained to relieved resources scarcity.Resource scheduling algorithms based on deep reinforcement learning(DRL) was introduced to solved the mismatch problem of traditional scheduling methods in complex environments.Beam-hopping technology was adopted to deal with the two-dimensional unevenness of service distribution in time and space.…”
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    Improving Precise Orbit Determination of LEO Satellites Using Enhanced Solar Radiation Pressure Modeling by Youcun Wang, Min Li, Kecai Jiang, Wenwen Li, Qile Zhao, Rongxin Fang, Na Wei, Renhai Mu

    Published 2023-01-01
    “…Abstract Precise orbit knowledge is a fundamental requirement for low Earth orbit (LEO) satellites. High‐precision non‐gravitational force modeling directly improves the overall quality of LEO precise orbit determination (POD). …”
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