International Journal of Satellite Communications and Networking最新文献

{"title":"Featured Cover","authors":"Tongguang Zhang,&nbsp;Chunhong Liu,&nbsp;Qiaomei Tian,&nbsp;Bo Cheng","doi":"10.1002/sat.1542","DOIUrl":"https://doi.org/10.1002/sat.1542","url":null,"abstract":"<p>The cover image is based on the article <i>Cloud-Edge Collaboration-Based Multi-Cluster System for Space-Ground Integrated Network</i> by Tongguang Zhang et al., https://doi.org/10.1002/sat.1541.***\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"43 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/sat.1542","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142868538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cloud-Edge Collaboration-Based Multi-Cluster System for Space-Ground Integrated Network","authors":"Tongguang Zhang,&nbsp;Chunhong Liu,&nbsp;Qiaomei Tian,&nbsp;Bo Cheng","doi":"10.1002/sat.1541","DOIUrl":"https://doi.org/10.1002/sat.1541","url":null,"abstract":"<div>\u0000 \u0000 <p>As global informationization deepens, the importance of Space-Ground Integrated Network (SGIN) as a new network architecture becomes increasingly prominent. SGIN combines the advantages of ground and space networks, enabling global information interconnection and sharing through various communication means such as satellites, drones, and ground stations. However, due to its complex network environment and diverse communication requirements, traditional network architectures struggle to meet its demands for efficiency, stability, and scalability. To address these challenges, we focus on the research, design, and implementation of a cloud-edge collaboration-based multi-cluster system for SGIN. The goal is to construct an efficient, stable, and scalable network system capable of providing seamless global coverage and efficient communication within SGIN. We design a multi-cluster system architecture based on container technology, leveraging cloud and edge computing techniques for dynamic resource allocation and efficient utilization. This architecture aims to meet the diverse network service requirements of ground terminals, enhancing responsiveness, efficiency, resilience, and reliability of network services. Additionally, we introduce a multipath data transmission mechanism to support the transfer of large-scale data, such as remote sensing images. A simulation platform tailored for SGIN is developed, demonstrating the feasibility of the multi-cluster system and the effectiveness of multipath data transmission.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"43 1","pages":"40-60"},"PeriodicalIF":0.9,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142869128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of Communication Link Availability for Co-Located GEO Satellites Due to Their Orbital Movements","authors":"Umit Cezmi Yilmaz","doi":"10.1002/sat.1540","DOIUrl":"https://doi.org/10.1002/sat.1540","url":null,"abstract":"<div>\u0000 \u0000 <p>It is becoming very common to use multiple GEO satellite inside the same longitude slot. There are different co-location strategies for that purpose but the most common one is to use “eccentricity and inclination separation” especially if the whole fleet is being controlled by the same operator. In this study, the determination of link availability by also considering the potential RF Interference between co-located satellites are examined. The main objective of the study is not to protect from the interference but to determine whether the satellites' orbital behavior may decrease the link availability and how much if they have potential of RF interference. In the study, two co-located GEO satellites are shown as a sample, but in principle, the philosophy demonstrated here can be used for three or more co-located GEO satellites.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"43 1","pages":"34-39"},"PeriodicalIF":0.9,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142868917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A 3D LEO Channel Model Based on GBSM for Satellite-Ground Communication Scenario","authors":"Zhaoyang Su,&nbsp;Yi Yin,&nbsp;Xianglong Duan,&nbsp;Zijie Han,&nbsp;Tao Zhou,&nbsp;Liu Liu","doi":"10.1002/sat.1539","DOIUrl":"https://doi.org/10.1002/sat.1539","url":null,"abstract":"<div>\u0000 \u0000 <p>Low earth orbit (LEO) satellites have the characteristics of low communication delay, low deployment cost, and wide coverage, which have become an important component of the 6G air-space-ground integrated information network. However, satellite-ground communication has a large propagation distance, complex fading, and fast terminal movement speed, causing the channel characteristics different from terrestrial communication networks. Therefore, channel modeling is necessary when deploying a satellite-ground communication network. In this paper, a 3D geometry-based stochastic model (GBSM) is proposed for satellite-ground communication links. The proposed channel model includes several environments such as urban, suburban, and rural. Based on this model, the channel impulse response (CIR) can be obtained, and the closed-form expression of spatial-temporal correlation function and Doppler power spectrum density are derived. Through simulation, the characteristics of large-scale fading and small-scale fading are analyzed, which depict the significant differences from the terrestrial networks. The relevant results can provide contributions to the design of future satellite-ground communication systems.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"43 1","pages":"23-33"},"PeriodicalIF":0.9,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142868669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing Satellite Link Security Against Drone Eavesdropping Through Cooperative Communication","authors":"Rajnish Kumar,&nbsp;Shlomi Arnon","doi":"10.1002/sat.1538","DOIUrl":"https://doi.org/10.1002/sat.1538","url":null,"abstract":"<p>Integrated satellite terrestrial networks (ISTNs) are emerging as a promising next-generation communication technology, for example, B5G and 6G, with low-earth orbit (LEO) satellites playing a growing role. However, the complex and unique characteristics of ISTNs make them more susceptible to cyberattacks. Recently, the use of drones for public and private services has increased the risk of eavesdropping on LEO satellite links. Such scenario presents an extremely challenging environment due to dynamic nature of LEO satellite and drone along with atmospheric attenuation at sub-THz frequencies. This study proposes a novel adaptive power-bandwidth cooperative scheme designed to mitigate the likelihood of eavesdropping attacks on LEO satellite links communicating with a ground station when a drone is within the line of sight. The mathematical algorithm dynamically adapts the resources to maximize the normalized secrecy capacity in this challenging scenario while maintaining a reasonable signal-to-noise ratio (SNR) at the legitimate receiver. The adaptive scheme involves strategic cooperation with a nearby terrestrial third party to amplify and forward the satellite signal to the ground station receiver. The simulation results demonstrate the effectiveness of the proposed algorithm, showing significant improvements (&gt; 70%) compared to the non-adaptive scheme over a wide range of elevation angles.</p>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"43 1","pages":"10-22"},"PeriodicalIF":0.9,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/sat.1538","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142868635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Error Performance of a NOMA-Based Satellite Communication System","authors":"Priyanka Prasad,&nbsp;Arti MK,&nbsp;Aarti Jain","doi":"10.1002/sat.1537","DOIUrl":"https://doi.org/10.1002/sat.1537","url":null,"abstract":"<div>\u0000 \u0000 <p>The paper analyzes the error performance of a basic satellite-terrestrial communication system, which uses a satellite as a source and receiver at the earth station as a destination. The system model accounts for an independent channel of fading and applies the theory of non-orthogonal multiple access (NOMA) to provide fair resource sharing and better connectivity among multiple users. The paper investigates the transmission characteristics and derives the expressions for the total symbol error rate (SER) of the proposed system model. Furthermore, it examines the transmission efficiency with the help of the elevation angle between the source and the destination. The paper also explores the impact of different fading environments on SER.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"43 1","pages":"1-9"},"PeriodicalIF":0.9,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142869205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and Implementation of Transparent Cross-Polarization Interference Compensation in a Wideband Dual-Polarization Satellite Receiver","authors":"Svilen Dimitrov,&nbsp;Vito Dantona,&nbsp;Gerhard Mocker","doi":"10.1002/sat.1533","DOIUrl":"10.1002/sat.1533","url":null,"abstract":"<p>In this paper, simultaneous transmission on two orthogonal antenna polarizations in a polarization division multiplexing (PDM) fashion is studied for wideband satellite communication links using dual-polarization satellite receivers for the purpose of doubling the data rate. In order to mitigate the cross-polarization interference (XPI), a new digital blind and transparent XPI compensation method is proposed, coined as XPI correlation learning estimation and adaptive reduction (XPI-CLEAR). The received signal-to-noise-and-interference ratio (SNIR) and packet-error rate (PER) performance with this non-data-aided and non-decision-directed method is assessed in a comprehensively modelled XPI channel with effects such as depolarization due to atmospheric conditions, imperfect cross-polarization discrimination (XPD) of the antennas at the transmitter and the receiver, memory effects due to frequency selectivity of the XPD, and differential frequency offset (DFO) between the two channels. The application of the XPI-CLEAR method presents considerable energy efficiency improvements for all the studied XPI channel effects, and is particularly beneficial for higher order modulation. A low-complexity hardware implementation with symbol rates up to 500 MBaud validates the XPI-CLEAR method as a practical solution to increase the data rates of the satellite air interface and to achieve the doubling of the throughput of the satellite link by the use of PDM.</p>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"42 6","pages":"481-492"},"PeriodicalIF":0.9,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/sat.1533","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deeper dive into interoperability and its implications for LunaNet communications and navigation services","authors":"James Schier, Coralí Roura, Phillip E. Paulsen, Karl Vaden, Jennifer Rock, Charles J. Sheehe, Angela Peura, Marc Seibert, Erica Lieb Weir","doi":"10.1002/sat.1531","DOIUrl":"https://doi.org/10.1002/sat.1531","url":null,"abstract":"SummaryThe Artemis program being developed by the United States' (US) National Aeronautics and Space Administration (NASA) is advancing capabilities to return humans to the Moon and establish an initial base camp and associated infrastructure with extensive contributions from international and commercial partners. In planning for cislunar exploration and science missions, space agencies are collaborating to enable communications, networking, and Positioning, Navigation, and Timing (PNT) systems—called LunaNet—to exchange information and provide services to cislunar spacecraft and space systems, thus helping each other to achieve their shared goals. To achieve commonality and lower cost for mutual benefit, the strategy of interoperability is being adopted to help fit all the pieces together and function smoothly. Facilitating interoperability should benefit lunar missions by providing the ability to operate in a collaborative environment similar to the terrestrial Internet. Interoperability allows them to share information, navigate safely despite increasing radio frequency congestion, and follow common processes and procedures for effective joint operations. Unlike prior government‐dominated efforts, this ecosystem is expected to include and benefit for‐profit (commercial) businesses, non‐profit organizations, and academic institutions as active stakeholders. Ultimately, the goal is to enable a cislunar ecosystem of service providers and users to contribute to and/or utilize infrastructure and capabilities to achieve mission objectives that span the full range of human endeavors while supporting a variety of business models. This approach enables a Systems of Systems (SoS), such as a Network of Networks, to be sustainable in the context of the LunaNet ecosystem as systems evolve over time in technologies, standards, components, and user applications. This paper reports on the results of an effort to help frame the development of the international LunaNet architecture by providing a canonical definition of interoperability broad enough to meet these needs, examining architectural and operational implications of the definition, and exploring interoperability strategies and tactics to deploy and evolve the services proposed for cislunar exploration and science missions.","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"52 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A decade of EHF scientific research: Unveiling insights from Alphasat Q/V‐band satellite communication experiments","authors":"Tommaso Rossi, Mauro De Sanctis, Ernestina Cianca, Giuseppe Codispoti, Giorgia Parca, Marina Ruggieri","doi":"10.1002/sat.1532","DOIUrl":"https://doi.org/10.1002/sat.1532","url":null,"abstract":"SummaryIn 2008, the Italian Space Agency (ASI) consolidated its position on research and experiments regarding extremely high frequency (EHF) satellite communication through the proposal to the European Space Agency (ESA) of hosting a Q/V‐band experimental payload on board the Alphasat geostationary satellite. The latter large platform, launched in 2013, thus hosted the so‐called TDP#5 (Technology Demonstration Payload), aimed at performing the first Q/V‐band telecommunication and propagation experimental campaigns. Thanks to the precious contribution given to the definition of the overall mission and the scientific objectives, the payload was then renamed in memory of Professor Aldo Paraboni, pioneer of scientific research on EHF satellite propagation.Since 2014, a large number of satellite communication scientific experiments have been conducted by the University of Rome Tor Vergata, principal investigator for the ASI telecommunication campaign. Due to the excellent scientific results and the high reliability of the system, the experimental campaign is still ongoing. The main objective of the proposed telecommunication experiments is to demonstrate the feasibility of broadband satellite communications in Q/V band, optimizing and assessing, over‐the‐air, the performance of the indispensable adaptive transmission techniques. Moreover, the application of innovative paradigms related to software‐defined networking (SDN) and network functions virtualization (NFV) has been investigated in the framework of satellite systems exploiting beyond Ka‐band frequencies.The goal that drives this experimental activity is to provide to the academic community, manufacturers, and service providers useful tools to cope with Q/V‐band links for future satellite communication systems. The use of EHF links contributes to the reduction of RF front end and thus minimization of orbital junk; moreover, high throughput links in conjunction with software‐driven architectures enable a high level of system reconfigurability that is one of the pillars for a sustainable use of space.The paper presents the main results of the last 10 years of Q/V‐band experiments, as well as the plans and perspectives for future scientific and operational activities in a sustainable space framework.","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"11 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141782116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on a user terminal-assisted beam pointing measurement algorithm for very high-throughput satellite systems","authors":"Kaiqiang Qi,&nbsp;Cheng Zhang,&nbsp;Yejun Zhou,&nbsp;Kang Liu","doi":"10.1002/sat.1529","DOIUrl":"10.1002/sat.1529","url":null,"abstract":"<div>\u0000 \u0000 <p>High-throughput satellites play an important role in emergency disaster relief, maritime, and other fields. A new generation of high-throughput satellites with large deployable antennas and broadband beamforming networks, namely, very high-throughput satellites (VHTS), is developing towards hundreds, even thousands of extremely narrow beams with Tbps capacity, which puts forward higher requirements for satellite pointing and system construction costs. In order to solve the problem that those traditional beam pointing measurement and calibration algorithms are difficult to apply or the performance is limited, this paper builds a service beam pointing measurement and calibration architecture. A user terminal-assisted beam pointing measurement algorithm based on the Gauss-Newton method is proposed for the general case, which can effectively reduce the construction cost of onboard and ground pointing measurement system, and improve the measurement accuracies of three axes of the satellite. Simulation results demonstrate the excellent performance under the ideal scenario. To achieve the future engineering application under the non-ideal scenario, the terminal positioning error can be first neglected, then the pattern processing error and the terminal signal measurement error must be reduced by decreasing the pattern sampling interval, increasing the number of participant terminals, and other means. By comparing with a traditional beam pointing measurement algorithm, the proposed algorithm can achieve much lower beam pointing error than the baseline.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"42 6","pages":"444-460"},"PeriodicalIF":0.9,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141576820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}