International Journal of Satellite Communications and Networking最新文献_第10页

Review of antenna technologies for very high frequency Data Exchange Systems 甚高频数据交换系统天线技术综述

IF 1.7 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2021-09-14 DOI: 10.1002/sat.1428

Victoria Gómez-Guillamón Buendía, Salvatore Liberto, George Goussetis, Nelson J. G. Fonseca

{"title":"Review of antenna technologies for very high frequency Data Exchange Systems","authors":"Victoria Gómez-Guillamón Buendía, Salvatore Liberto, George Goussetis, Nelson J. G. Fonseca","doi":"10.1002/sat.1428","DOIUrl":"10.1002/sat.1428","url":null,"abstract":"<div>\u0000 \u0000 <p>The Automated Identification System (AIS) was originally developed as a terrestrial system tracking vessels near the coastline. Dedicated channels were allocated within the spectrum historically reserved for maritime applications in the very high frequency (VHF) band, enabling long range communications, up to a few kilometers. There have been various initiatives in the last decade that extended this system with a space segment, enabling global monitoring of vessels beyond the range of terrestrial stations. Recently, the World Radiocommunication Conference has allocated frequencies for the extension of this system to a two-way VHF Data Exchange System (VDES) via satellite. This requires to adapt spaceborne antenna solutions previously developed for AIS, particularly for missions using small satellites and CubeSats. This paper provides a timely review of existing VHF antenna solutions and new concepts under development which could be applicable to VDES missions. Some key metrics are identified to provide a comparative study between various candidate solutions. Considering the range of possible missions, from secondary payloads on-board larger satellites to dedicated constellations, it is believed that a number of antenna products can find application in future VDES space-based infrastructure.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"41 2","pages":"122-133"},"PeriodicalIF":1.7,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/sat.1428","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42310191","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}

引用次数: 3

VDES R-Mode: Vulnerability analysis and mitigation concepts VDES R‐模式：脆弱性分析和缓解概念

IF 1.7 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2021-09-12 DOI: 10.1002/sat.1427

Francisco Lázaro, Ronald Raulefs, Hannes Bartz, Thomas Jerkovits

引用次数: 2

Global Navigation Satellite Systems Spoofing Detection through measured Autocorrelation Function Shape Distortion 基于测量自相关函数形状畸变的全球导航卫星系统欺骗检测

IF 1.7 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2021-09-01 DOI: 10.1002/sat.1425

Abdul Malik Khan, Attiq Ahmad

{"title":"Global Navigation Satellite Systems Spoofing Detection through measured Autocorrelation Function Shape Distortion","authors":"Abdul Malik Khan, Attiq Ahmad","doi":"10.1002/sat.1425","DOIUrl":"10.1002/sat.1425","url":null,"abstract":"<div>\u0000 \u0000 <p>With the expansion in Global Navigation Satellite System (GNSS) constellations and emerging applications utilizing GNSS systems, the issue of detection of interference is evolving as a growing concern in the satellite navigation user community. Threats for GNSS users can be classified as unintentional interference, jamming, and spoofing. Spoofing is more harmful among them because the target receiver might not be aware of the attack and, as a consequence, generate misleading position information. Spoofing attacks are classified as simplistic, intermediate, and sophisticated depending on their complexity of implementation. We focused primarily on the detection of intermediate spoofing attacks by measuring shape distortion (SD) through multiple correlators that cover multiple chips around the prompt tracking point. The SD metric compares the measured and typical values of the autocorrelation function and decides on the spoofing using a noise variance based threshold. The proposed SD metric is found to be very effective in detecting the spoofing attack during the pull-off phase of the attack. The method is verified through simulations, synthetic spoofing data, and the TEXBAT data shared by the University of Texas, Austin. Different formulations of the proposed method are compared to provide an optimal number of correlator taps in each channel.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"40 2","pages":"148-156"},"PeriodicalIF":1.7,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/sat.1425","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46407924","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}

引用次数: 3

VDES R-Mode performance analysis and experimental results VDES R - Mode性能分析及实验结果

IF 1.7 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2021-09-01 DOI: 10.1002/sat.1424

Markus Wirsing, Armin Dammann, Ronald Raulefs

{"title":"VDES R-Mode performance analysis and experimental results","authors":"Markus Wirsing, Armin Dammann, Ronald Raulefs","doi":"10.1002/sat.1424","DOIUrl":"10.1002/sat.1424","url":null,"abstract":"<p>Global Navigation Satellite Systems (GNSS) have become an essential part of maritime navigation, in particular to improve situational awareness and vessel traffic management. The dependence on GNSS creates vulnerability for maritime shipping. Driven by this vulnerability, the desire for a backup system for maritime navigation has been emerging. The VHF Data Exchange System (VDES) standard provides communication capabilities for maritime applications. VDES is currently being revised. As part of this revision, VDES will be extended by ranging and navigation functionalities, called R-Mode, as an alternative for maritime navigation. In this paper, we address system design aspects and evaluate the positioning performance of VDES R-Mode. We derive estimation theory bounds on the accuracy of VDES R-Mode distance and velocity. In a case study, we discuss and evaluate the benefit of satellite links to complement VDES R-Mode positioning. Furthermore, we introduce a Kalman filter for position and velocity tracking, which we apply to experimental data. We describe an experiment we conducted at Lake Ammer, southwest of Munich, and evaluate the VDES R-Mode positioning performance for this setup. Our experimental results show that VDES R-Mode is capable of achieving a 95th-percentile horizontal position error of 22 m. Thus, VDES R-Mode is a promising approach for a maritime backup system that can meet the IALA accuracy requirements.</p>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"41 2","pages":"158-177"},"PeriodicalIF":1.7,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/sat.1424","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42007701","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}

引用次数: 3

Feasibility of using a software-defined baseband for multiple space per aperture (MSPA) ground operations 在每孔径多空间(MSPA)地面操作中使用软件定义基带的可行性

IF 1.7 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2021-08-23 DOI: 10.1002/sat.1420

Moses Browne Mwakyanjala, Petrus Hyvönen, Élcio Jeronimo de Oliveira, Jaap van de Beek

{"title":"Feasibility of using a software-defined baseband for multiple space per aperture (MSPA) ground operations","authors":"Moses Browne Mwakyanjala, Petrus Hyvönen, Élcio Jeronimo de Oliveira, Jaap van de Beek","doi":"10.1002/sat.1420","DOIUrl":"10.1002/sat.1420","url":null,"abstract":"<p>This paper presents the feasibility of performing multiple spacecraft per aperture (MSPA) ground operations by using a low-cost software-defined baseband (SDB). The SDB is a Consultative Committee for Space Data Systems (CCSDS)-compliant baseband that employs a personal computer for signal processing and a low-cost commercial-off-the-shelf RF front end for RF signal sampling. The SDB is customized to offer traditional telemetry, tracking, and command (TT&C) services for near-Earth missions operating in S band. The study starts by reviewing MSPA methods already studied by space agencies such as NASA and ESA before going to MSPA methods proposed in the latest CCSDS blue book on RF and modulation systems. The feasibility of operating the CCSDS-proposed multiple uplink carrier MSPA method using the SDB is assessed after evaluating in-band interference and out-of-band emissions from the uplink signals radiated by the low-cost RF front end employed by the SDB. Furthermore, we present a case study where the SDB is used in MSPA operations on a typical solid-state amplifier (SSPA) amplifier typically used in near-Earth missions.</p>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"40 2","pages":"133-147"},"PeriodicalIF":1.7,"publicationDate":"2021-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/sat.1420","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42607201","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}

引用次数: 0

Supervised machine learning for power and bandwidth management in very high throughput satellite systems 用于高通量卫星系统功率和带宽管理的监督式机器学习

IF 1.7 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2021-08-22 DOI: 10.1002/sat.1422

Flor G. Ortiz-Gómez, Daniele Tarchi, Ramón Martínez, Alessandro Vanelli-Coralli, Miguel A. Salas-Natera, Salvador Landeros-Ayala

引用次数: 8

Opportunities and limits of moderate source routing in delay-/disruption-tolerant networking space networks 延迟/中断容忍网络空间网络中适度源路由的机会和限制

IF 1.7 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2021-08-18 DOI: 10.1002/sat.1421

Edward J. Birrane, Carlo Caini, Gian Marco De Cola, Federico Marchetti, Laura Mazzuca, Lorenzo Persampieri

{"title":"Opportunities and limits of moderate source routing in delay-/disruption-tolerant networking space networks","authors":"Edward J. Birrane, Carlo Caini, Gian Marco De Cola, Federico Marchetti, Laura Mazzuca, Lorenzo Persampieri","doi":"10.1002/sat.1421","DOIUrl":"10.1002/sat.1421","url":null,"abstract":"<div>\u0000 \u0000 <p>This paper aims to investigate the potential advantages and also the limits of source routing when applied to delay-/disruption-tolerant networking (DTN) space networks. To this end, it uses a variant of contact graph routing (CGR) called moderate source routing (MSR), recently proposed by the authors and fully compatible with interplanetary overlay network (ION), the DTN suite developed by NASA-JPL. MSR differs from standard CGR as the route to destination is not recalculated from scratch at each node, but possibly reused, if still valid, by next nodes. For this purpose, the route is saved in a dedicated extension block of the forwarded bundle (the data unit of the bundle protocol, used in DTN). Performance of MSR versus CGR is assessed by considering a simple but very challenging space layout. Numerical results, obtained on a GNU/Linux testbed, show that MSR is effective at reducing the chances of loops, in particular when the source has full knowledge of the state of the network; otherwise, network instabilities are still possible. In this case, they can be neutralized by means of the combined use of source routing and anti-loop tools, as shown in the paper. A further advantage of MSR is that it is compatible with standard CGR, which would facilitate a gradual or partial deployment.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"40 6","pages":"428-444"},"PeriodicalIF":1.7,"publicationDate":"2021-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/sat.1421","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41923514","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}

引用次数: 2

A smart reactive jamming approach to counter reinforcement learning-based antijamming strategies in GEO SATCOM scenario 地球同步卫星通信场景下基于强化学习的智能无功干扰策略

IF 1.7 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2021-07-27 DOI: 10.1002/sat.1418

Shahzad Arif, Ali Javed Hashmi, Waseem Khan, Rizwana Kausar

{"title":"A smart reactive jamming approach to counter reinforcement learning-based antijamming strategies in GEO SATCOM scenario","authors":"Shahzad Arif, Ali Javed Hashmi, Waseem Khan, Rizwana Kausar","doi":"10.1002/sat.1418","DOIUrl":"10.1002/sat.1418","url":null,"abstract":"<div>\u0000 \u0000 <p>Reinforcement learning (RL) is being considered for future SATCOM systems due to its inherent capability to self-learn the optimum decision-making policy under different scenarios. This capability enables SATCOM systems to manage their resources judiciously and mitigate jamming attacks autonomously without prior jammer type classification. We propose a novel smart reactive SATCOM jamming approach that would not only counter these RL based anti-jamming strategies but would also be effective against conventional anti-jamming schemes, that is, FHSS and DSSS. The proposed jamming approach exploits the limitations in learning patterns of Q-learning-based RL agent and achieves effective jamming while conserving considerable amount of jamming power. To achieve this, we propose an intelligent jamming engine (IJE) along with few potent jamming algorithms and evaluate their performance in terms of throughput degradation of victim SATCOM link, jamming power conservation, and design complexity of the jammer. Software simulations successfully demonstrate the effectiveness of our proposed smart reactive jamming approach which outperforms the standard reactive jammer against RL-based antijamming schemes.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"40 2","pages":"96-119"},"PeriodicalIF":1.7,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/sat.1418","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46790115","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}

引用次数: 3

Hybrid threshold combining and maximum ratio combining model for satellite communication over composite Rayleigh and Rician fading channel 复合瑞利和瑞利衰落信道卫星通信的混合阈值组合和最大比值组合模型

IF 1.7 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2021-07-22 DOI: 10.1002/sat.1419

Wasiu Akande Ahmed, Falin Wu, Ganiy Ishola Agbaje, Muhammad Abdul Alim Sikder, Isaac Adewale Ojedokun

{"title":"Hybrid threshold combining and maximum ratio combining model for satellite communication over composite Rayleigh and Rician fading channel","authors":"Wasiu Akande Ahmed, Falin Wu, Ganiy Ishola Agbaje, Muhammad Abdul Alim Sikder, Isaac Adewale Ojedokun","doi":"10.1002/sat.1419","DOIUrl":"10.1002/sat.1419","url":null,"abstract":"<div>\u0000 \u0000 <p>Communication through satellite is of great task and importance especially in the world of telecommunication infrastructure. It plays a leading role for future communication systems. However, the performance of the satellite communication system is dominated by the channel conditions overwhelmed by multipath fading and ionospheric scintillation effects. Maximum ratio combining (MRC) previously used to tackle this problem is characterized with hardware complexity resulted in long processing time, while threshold combining (TC) with simple hardware display poor performance. Thus, evaluation of hybrid TC-MRC, with closed-form expression over composite Rayleigh and Rician fading channel is necessary. In this paper, TC and MRC are combined to improve the signal quality and performance. The data are modulated using M-ary quadrature amplitude modulation and transmitted over the combined effects. The received signals at varying paths are scanned to select the best paths. A mathematical expression using the probability density function of composite Rayleigh and Rician fading channel for mean integrated square error (MISE) is derived. The model is efficiently simulated and the performance is estimated. The results show that the hybrid TC-MRC model achieves lower MISE and processing time compared to threshold combiner and even maximum ratio combiner, and thereby enhance the performance of the satellite communication system.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"40 2","pages":"120-132"},"PeriodicalIF":1.7,"publicationDate":"2021-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/sat.1419","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43313241","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}

引用次数: 0

Learning with error-based key agreement and authentication scheme for satellite communication 基于错误的卫星通信密钥协议学习与认证方案

IF 1.7 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2021-07-15 DOI: 10.1002/sat.1417

Uddeshaya Kumar, Manish Garg

{"title":"Learning with error-based key agreement and authentication scheme for satellite communication","authors":"Uddeshaya Kumar, Manish Garg","doi":"10.1002/sat.1417","DOIUrl":"10.1002/sat.1417","url":null,"abstract":"<div>\u0000 \u0000 <p>Satellite communication is one of the essential communication mechanisms that can be used for significant distance and under circumstances where the other communication mechanisms cannot work. Therefore, the security of this communication method is highly needed. Because in this era where information plays an important role, information security becomes the first priority for everyone. When we talk about information security, the key exchange and authentication are two key factors of information security. Whitfield Diffie and Martin Hellman<sup>1</sup> proposed the first key exchange protocol. In the last two or three decades, various authentication schemes have been proposed to create a secure network that mainly depends on classical number–theoretical hard assumptions (factorization or discrete logarithm), but due to the Shor's<sup>2</sup> algorithm, above-mentioned scheme is no longer secure because any discrete logarithm or factorization problems can be solved by Shor's algorithm in polynomial time if the quantum computer becomes the reality soon. As far as our knowledge goes, there is no authentication protocol for satellite communication, which is secure against quantum computer attacks. Therefore, in this paper, we first proposed authentication protocol for satellite communication based on ring learning with error which is secure against quantum attacks.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"40 2","pages":"83-95"},"PeriodicalIF":1.7,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/sat.1417","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44247045","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}

引用次数: 7