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Local-State Routing in satellite constellation Networks from the Perspective of Complex Network

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China Communications 2023年第7期20卷 72-88页

作者： Xin Xu Jun Cai Aijun Liu Chaoying Dong Chen Han Institute of Communication Engineering Army Engineering University of PLANanjing 210007China The Unit 94973 of the Chinese People’s Liberation Army Hangzhou 310000China The Sixty-Third Research Institute National University of Defense TechnologyNanjing 210007China

Routing algorithms in satellite constellation networks usually make use of the local state information to adapt to the topology and traffic dynamics,since it’s difficult to obtain the global states in time due to the spatial large-scale feature of constellation networks.Furthermore,they use different range of local states and give these states distinct weights.However,the behind design criterion is ambiguous and often based on experience.This paper discusses the problem from the perspective of complex network.A universal local-state routing model with tunable parameters is presented to generalize the common characteristics of local-state routing algorithms for satellite constellation networks.Based on this,the impacts of localstate routing algorithms on performance and the correlation between routing and traffic dynamics are analyzed in detail.Among them,the tunable parameters,the congestion propagation process,the critical packet sending rate,and the network robustness are discussed respectively.Experimental results show that routing algorithms can achieve a satisfactory performance by maintaining a limited state awareness capability and obtaining the states in a range below the average path length.This provides a valuable design basis for routing algorithms in satellite constellation networks.

关键词： satellite constellation local state routing traffic dynamics complex networks robustness

Low Altitude satellite constellation for Futuristic Aerial-Ground Communications

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Computer Modeling in Engineering & Sciences 2023年第8期136卷 1053-1089页

作者： Saifur Rahman Sabuj Mohammad Saadman Alam Majumder Haider Md Akbar Hossain Al-Sakib Khan Pathan Department of Electronic Engineering Hanbat National UniversityDaejeon34158South Korea Department of Electrical and Electronic Engineering Brac UniversityDhaka1212Bangladesh School of Business and Digital Technologies Manukau Institute of TechnologyManukau2241New Zealand Department of Computer Science and Engineering United International UniversityDhaka1212Bangladesh

This paper discusses the significance and prospects of low altitude small satellite aerial vehicles to ensure smooth aerial-ground communications for next-generation broadband networks.To achieve the generic goals of fifthgeneration and beyondwireless networks,the existing aerial network architecture needs to be revisited.The detailed architecture of low altitude aerial networks and the challenges in resource management have been illustrated in this paper.Moreover,we have studied the coordination between promising communication technologies and low altitude aerial networks to provide robust network coverage.We talk about the techniques that can ensure userfriendly control and monitoring of the low altitude aerial networks to bring forth wireless broadband connectivity to a new dimension.In the end,we highlight the future research directions of aerial-ground communications in terms of access technologies,machine learning,compressed sensing,and quantum communications.

关键词： Aerial-terrestrial network cognitive radio network cooperative communication high altitude platform low altitude platform low earth orbit satellite constellation unmanned aerial vehicle

satellite constellation Design with Adaptively Continuous Ant System Algorithm

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Chinese Journal of Aeronautics 2007年第4期20卷 297-303页

作者： He Quan Han Chao School of Astronautics Beijing University of Aeronautics and Astronautics Beijing 100083 China

The ant system algorithm （ASA） has proved to be a novel meta-heuristic algorithm to solve many multivariable problems. In this paper, the earth coverage of satellite constellation is analyzed and a n ＋ 1^ -fold coverage rate is put forward to evaluate the coverage performance of a satellite constellation. An optimization model of constellation parameters is established on the basis of the coverage performance. As a newly developed method, ASA can be applied to optimize the constellation parameters. In order to improve the ASA, a rule for adaptive number of ants is proposed, by which the search range is obviously enlarged and the convergence speed increased. Simulation results have shown that the ASA is more quick and efficient than other methodV211.71s.

关键词： ant system algorithm satellite constellation optimization design coverage performance adaptive adjusting

Simulation of earth gravity field using satellite constellation with variable inclination configuration

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Geodesy and Geodynamics 2021年第5期12卷 323-328页

作者： Qian Zhao Weiping Jiang Xinyu Xu Xiancai Zou Key Laboratory of Earthquake Prediction Institute of Earthquake ForecastingChina Earthquake AdministrationBeijing 100036China Research Center of GNSS Wuhan University129 Luoyu RoadWuhan 430079China School of Geodesy and Geomatics Wuhan University129 Luoyu RoadWuhan 430079China

Based on a satellite constellation composed of two GRACE-type satellite formations with different inclinations(near polar orbit + low inclination) and the theory of repeat orbit cycle, we discuss the methods for selecting medium-low inclinations for global and local gravity fields. The effects of this constellation configuration on gravity field inversion are comparatively analyzed using a whole-course dynamics simulation. The results show that compared with the single GRACE-type satellite formation,the use of satellite constellations with different inclination configurations improves the gravity solution precision by 34%. The inclusion of multi-directional observations can improve the spatio-temporal resolution of the satellite missions, and yield gravity field solutions with higher isotropic sensitivity.Furthermore, it is necessary to select the optimal low inclination according to the study area, which will have a significant influence on the gravity field solution.

关键词： satellite constellation Low inclination Multi-directional observations Inversion of gravity field

Conceptual Design Process for LEO satellite constellations Based on System Engineering Disciplines

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Computer Modeling in Engineering & Sciences 2022年第5期131卷 599-618页

作者： Ali Salehi Mahdi Fakoor Amirreza Kosari Seyed Mohammad Navid Ghoreishi Faculty of New Sciences and Technologies University of TehranTehranIran

satellite design process is an interdisciplinary subject in which the need for collaboration among various science and engineering disciplines is evident.Meanwhile,finding an optimal process for conceptual design of a satellite,which can optimize time and cost,is still an important issue.In this paper,based on system engineering approach,an optimal design process is proposed for LEO satellite constellations.In the proposed method,design process,design sequences,and data flow are established.In this regard,the conceptual design process is divided into two levels of mission(or constellation)and system(or satellite)as well as 15 main activities based on the mission profile,previous experiences of the authors,and existing literature.Then,the relationships between these activities have been determined by considering the importance of relationships according to their priority.Finally,these relations are optimized based on design structure matrix(DSM).By utilizing this approach,system design process of a telecommunication satellite constellation in LEO is formulated in conceptual design phase.Performance and capability of the proposed approach in optimal design process of the satellite constellation are investigated by comparing the outcome with existing results in the literature.

关键词： satellite constellation system engineering design structure matrix conceptual design

A compass time-space model-based virtual IP routing scheme for NTSN satellite constellations

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中国航空学报:英文版 2023年第9期36卷 280-288页

作者： Yifei JIANG Shufan WU Qiankun MO School of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai 200240China

Recently,Non-Terrestrial satellite Networks(NTSTs)have gained more and more attentions due to global coverage,low latency,and high-speed communications.The routing scheme is one of the primary challenges for NTSNs,due to the mega scale of an NTSN constellation and the dynamic topology feature.To solve many pressing problems,a Compass time-space Model-based Virtual IP(CMVIP)routing scheme is proposed in this paper.In order to compensate for discontinuities in existing topology models,a compass-shaped time-space model is proposed.It can be adapted with Inter-satellite-Link(ISL)and Ground-satellite-Link(GSL)transmissions.A distributed algorithm with multiple optimization objectives and multiple constraints is applied for routing path discovery.To more realistically verify the specific scheme,a traffic model that supports two different services is proposed.Access and bearer services are the two main applications of an NTSN.Experimental results demonstrate that the proposed scheme achieves superior Qualityof-Service(QoS)performance.In addition,comparison results demonstrate that the CMVIP routing scheme is superior to the Virtual-Topology-based Shortest Path(VT-SP)routing algorithm.

关键词： Quality of service Routing scheme satellite communication satellite constellation satellite network

Geometrical approach for an optimal inter-satellite visibility

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Astrodynamics 2021年第3期5卷 237-248页

作者： Marco Cinelli Emiliano Ortore Giovanni Laneve Christian Circi Department of Mathematics University of Rome Tor VergataRome 00133Italy Department of Astronautical Electrical and Energy EngineeringSapienza University of RomeRome 00138Italy Scuola di Ingegneria Aerospaziale Sapienza University of RomeRome 00138Italy

In the eld of satellite constellations,an important requirement is often represented by the possibility to exchange data among the satellites or exploit mutual visibility to carry out measurements on the parameters of the Earth's atmosphere.Therefore,recursive and routing algorithms are usually implemented to evaluate inter-satellite visibility intervals.However,to design the con guration of the constellation,it is important to consider the orbital conditions that guarantee the mutual visibility between couples of satellites.Thus,in this study,a geometric analysis was performed to identify the optimal inter-satellite visibility conditions,expressed in terms of the di erence in the true anomaly between satellites characterized by di erent orbital con gurations.This approach allows a handy constellation design,without performing a numerical analysis.It is particularly useful in the case of a high number of satellites,when numerical techniques require signi cant computational e ort.Therefore,it is possible to considerably simplify the design of a constellation in which the mutual visibility between couples of satellites is always guaranteed.This type of constellation,usually referred to as satellite chain,can be exploited in several network services and remote sensing systems devoted to enhancing the knowledge of atmospheric parameters.

关键词： satellite constellation interlink visibility

A Coordination Control Method for Stationkeeping of Regressive Orbit Regional Coverage satellite constellation

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A Coordination Control Method for Stationkeeping of Regressi...

China’s high-resolution optical remote sensing satellites and their mapping applications

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作者： Xiang Junhua , Zhang Yulin Institute of Aerospace and Material Engineering, National University of Defense Technology, Changsha 410073 Space Technology Research Center, Tsinghua University, Beijing 100084

＜正＞Studied the characteristic of the regressive orbit and its application in the regional coverage constellation, and designed a regional coverage constellation. Through studying on the equation of motion of substellar track, it may realize the correction about the deviation of the substellar track through controlling the deviation of ascending node right ascension, and through controlling the deviation of phase in the along-track direction, it may realize the correction about the relative positions between the regional coverage constellation satellites Using the deviation of semi-major axis and inclination have realized to control the rate of change of the deviation of ascending node right ascension and phase together. Simulation results for the regional coverage constellation confirm that the control method is valid.

关键词： Regressive Orbit Regional Coverage satellite constellation Station-keeping Coordination Control

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Geo-Spatial Information Science 2021年第1期24卷 85-94,I0011页

作者： Deren Li Mi Wang Jie Jiang State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhanChina School of Geomatics and Urban Spatial Informatics Beijing University of Civil Engineer and ArchitectureBeijingChina

Since the beginning of the twenty-first century,several countries have made great efforts to develop space remote sensing for building a high-resolution earth observation system.Under the great attention of the government and the guidance of the major scientific and technological project of the high-resolution earth observation system,China has made continuous breakthroughs and progress in high-resolution remote sensing imaging technology.The development of domestic high-resolution remote sensing satellites shows a vigorous trend,and consequently,a relatively stable and perfect high-resolution earth observation system has been formed.The development of high-resolution remote sensing satellites has greatly promoted and enriched modern mapping technologies and methods.In this paper,the development status,along with mapping modes and applications of China’s high-resolution remote sensing satellites are reviewed,and the development trend in high-resolution earth observation system for global and ground control-free mapping is discussed,providing a reference for the subsequent development of high-resolution remote sensing satellites in China.

关键词： High-resolution optical remote sensing satellite satellite constellation mapping mode global mapping