Conecte-se

Bibliografias temáticas / Satcom / Artigos de revistas

Siga este link para ver outros tipos de publicações sobre o tema: Satcom.

Artigos de revistas sobre o tema "Satcom"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 25 de maio de 2024

Crie uma referência precisa em APA, MLA, Chicago, Harvard, e outros estilos

Selecione um tipo de fonte:

Veja os 50 melhores artigos de revistas para estudos sobre o assunto "Satcom".

Ao lado de cada fonte na lista de referências, há um botão "Adicionar à bibliografia". Clique e geraremos automaticamente a citação bibliográfica do trabalho escolhido no estilo de citação de que você precisa: APA, MLA, Harvard, Chicago, Vancouver, etc.

Você também pode baixar o texto completo da publicação científica em formato .pdf e ler o resumo do trabalho online se estiver presente nos metadados.

Veja os artigos de revistas das mais diversas áreas científicas e compile uma bibliografia correta.

1

Buchanan, Neil B., Vincent F. Fusco e Maarten van der Vorst. "SATCOM Retrodirective Array". IEEE Transactions on Microwave Theory and Techniques 64, n.º 5 (maio de 2016): 1614–21. http://dx.doi.org/10.1109/tmtt.2016.2541121.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

2

Flannigan, Liam, Liam Yoell e Chang-qing Xu. "Mid-wave and long-wave infrared transmitters and detectors for optical satellite communications—a review". Journal of Optics 24, n.º 4 (15 de março de 2022): 043002. http://dx.doi.org/10.1088/2040-8986/ac56b6.

Texto completo da fonte

Resumo:

Abstract There has been a recent surge in interest for optical satellite communication (SatCom) utilizing lasers. It is clear to see why, as optical SatCom is capable of higher speed, lighter weight, higher directionality, and higher efficiency versus their radio-based counterparts. Research into optical SatCom has focused on devices operating in the short-wave infrared (SWIR), which is due to the maturity and commercial availability of such component’s thanks to significant development in terrestrial telecommunications networks. However, SWIR performs poorly in fog and heavy weather, prompting investigations into longer mid-wave and long-wave infrared bands for optical communication instead due to reduced atmospheric losses. This paper provides a comprehensive review of laser transmitters, detectors, and the science behind selecting longer wavelengths for optical SatCom to boost optical SatCom between ground stations and low earth orbit satellite constellations being deployed.

Estilos ABNT, Harvard, Vancouver, APA, etc.

3

Kuhn, Nicolas. "Research trends in SATCOM". ACM SIGMETRICS Performance Evaluation Review 46, n.º 3 (25 de janeiro de 2019): 112. http://dx.doi.org/10.1145/3308897.3308947.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

4

James, J. R. "Realising personal satcom antennas". Electronics & Communication Engineering Journal 10, n.º 2 (1 de abril de 1998): 73–82. http://dx.doi.org/10.1049/ecej:19980205.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

5

Butcher, N. "Daily ionospheric forecasting service (DIFS) III". Annales Geophysicae 23, n.º 12 (23 de dezembro de 2005): 3591–98. http://dx.doi.org/10.5194/angeo-23-3591-2005.

Texto completo da fonte

Resumo:

Abstract. The daily variability of the ionosphere can greatly affect HF or SATCOM communications. HF skywave operators plan frequency schedules months in advance, however, they also require daily knowledge of the ionospheric conditions in order to modify assignments. SATCOM operators also require daily information about the levels of scintillation, which are variations in phase, amplitude, polarisation and angle of arrival that can cause severe degradation of the received signal. Using a number of ionosonde measurements and geomagnetic and solar values, a Daily Ionospheric Forecasting Service (DIFS) has been developed, which provides HF and SATCOM operators with daily forecasts of predicted ionospheric conditions. The system uses in-house algorithms and an externally developed Global Ionospheric Scintillation Model (GISM) to generate HF and SATCOM forecasts. HF forecasts consist of a past summary and a forecast section, primarily displaying observed values and predicted categories for the Maximum Usable Frequency (MUF), as well as an Ionospheric Correction factor (ICF) that can be fed into the ionospheric propagation prediction tool, WinHF. SATCOM forecasts give predictions of global scintillation levels, for the polar, mid and equatorial latitude regions. Thorough analysis was carried out on DIFS and the results conclude that the service gives good accuracy, with user feedback also confirming this, as well.

Estilos ABNT, Harvard, Vancouver, APA, etc.

6

Huang, Gui Chao, e Magdy F. Iskander. "A Low-Profile UHF SATCOM Antenna". IEEE Transactions on Antennas and Propagation 66, n.º 9 (setembro de 2018): 4890–94. http://dx.doi.org/10.1109/tap.2018.2846789.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

7

Riley, A. J. "Open systems protocols over military satcom". Computer Standards & Interfaces 21, n.º 2 (junho de 1999): 140–41. http://dx.doi.org/10.1016/s0920-5489(99)92081-0.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

8

Kim, Joon-Hyung, Jung-Taek Lim, Jae-Eun Lee, Jae-Hyeok Song, Jeong-Taek Son, Min-Seok Baek, Eun-Gyu Lee, Sun-Kyu Choi e Choul-Young Kim. "K-Band Power Amplifier for SATCOM". Journal of Korean Institute of Electromagnetic Engineering and Science 33, n.º 11 (novembro de 2022): 897–900. http://dx.doi.org/10.5515/kjkiees.2022.33.11.897.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

9

Zeng, Xiang Feng, e Yu Hong Yang. "Anti-Jamming Technology Performance Analysis of SATCOM Systems". Applied Mechanics and Materials 198-199 (setembro de 2012): 1627–31. http://dx.doi.org/10.4028/www.scientific.net/amm.198-199.1627.

Texto completo da fonte

Resumo:

Numerous technologies have been adopted in modern SATCOM to ensure communica-tion smooth. Among them, frequency hopping and onboard processing technology will be researched mainly in this paper. First, models of frequency hopping system and onboard processing system were built by Simulink. Then, the effect of coupling phenomenon analyzed on the theoretical. At last, Anti-jamming capability studied after simulating with different jamming. All above will provide convincing support to further research on SATCOM technologies; also, will guide the development of satellite communication.

Estilos ABNT, Harvard, Vancouver, APA, etc.

10

Franke, E. "Satellite inclination effects on UHF Satcom operation". IEEE Aerospace and Electronic Systems Magazine 8, n.º 12 (dezembro de 1993): 7–13. http://dx.doi.org/10.1109/62.246034.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

11

Zhang, Luming, Hao Jiang, Yihang Li, Yixin Suo, Fan Yang, Feiliang Chen, Mo Li, Qiye Wen e Jian Zhang. "Demonstration of a Wideband Multipolarization Transmitarray Antenna for Satellite Communication". International Journal of RF and Microwave Computer-Aided Engineering 2023 (8 de maio de 2023): 1–10. http://dx.doi.org/10.1155/2023/6610220.

Texto completo da fonte

Resumo:

To meet the requirements of satellite communication (SATCOM), in this paper, a wideband high stability transmitarray antenna (TA) for SATCOM is proposed. The TA is composed of 225 metal-only unit cells that comprise three metallic layers with an air spacer in between. High stability is capable by adopting a simple metallic square loop and two pairs of orthogonal stubs with a 1 mm thickness of the layer, which ensures lower assembly complexity and higher integration. The proposed unit cell can also support linear polarization (LP) wave excitation and circular polarization (CP) wave excitation simultaneously. Meanwhile, the metal-only unit cell can operate without dielectric loss, which leads to higher working efficiency. By adjusting feature sizes, eight different kinds of the unit cell are designed to realize a 3-bit TA which enables obtaining a gain of 23.53 dBi. Finally, four TA prototypes have been fabricated and tested successfully. The measured result shows a 28.5% 3 dB gain bandwidth from 30 GHz to 40 GHz, which is in good consistency with the simulated design. This compact and mechanical robustness design provides an alternative proposal for SATCOM.

Estilos ABNT, Harvard, Vancouver, APA, etc.

12

Kumar, Raj, Pramendra Kumar Verma e Machavaram Venkateshwar Kartikeyan. "Wide scanned electronically steered conformal active phased array antenna for Ku-band SATCOM". International Journal of Microwave and Wireless Technologies 11, n.º 4 (18 de dezembro de 2018): 376–81. http://dx.doi.org/10.1017/s1759078718001599.

Texto completo da fonte

Resumo:

AbstractThe paper describes the design and development of a low profile wide scanned conformal active 1 × 32 phased array antenna for Ku-band SATCOM applications. The realized antenna is diagonally polarized and covers full transmit frequency band (i.e. 13.75–14.5 GHz) of Ku band SATCOM. All the developed sub-systems of the antenna, i.e. conformal radiating array, conformal transmit module, manifold network, and beam steering unit are described. The VSWR of the antenna is better than 1.65 over the complete transmit frequency band. The antenna has the beam steering capability of ±60° in the array plane. Designed antenna is best suited for airborne applications, where antenna profile contributes considerable aero drag and RCS to the host platform.

Estilos ABNT, Harvard, Vancouver, APA, etc.

13

Jabandžić, Irfan, Fadhil Firyaguna, Spilios Giannoulis, Adnan Shahid, Atri Mukhopadhyay, Marco Ruffini e Ingrid Moerman. "The CODYSUN Approach: A Novel Distributed Paradigm for Dynamic Spectrum Sharing in Satellite Communications". Sensors 21, n.º 23 (2 de dezembro de 2021): 8052. http://dx.doi.org/10.3390/s21238052.

Texto completo da fonte

Resumo:

With a constant increase in the number of deployed satellites, it is expected that the current fixed spectrum allocation in satellite communications (SATCOM) will migrate towards more dynamic and flexible spectrum sharing rules. This migration is accelerated due to the introduction of new terrestrial services in bands used by satellite services. Therefore, it is important to design dynamic spectrum sharing (DSS) solutions that can maximize spectrum utilization and support coexistence between a high number of satellite and terrestrial networks operating in the same spectrum bands. Several DSS solutions for SATCOM exist, however, they are mainly centralized solutions and might lead to scalability issues with increasing satellite density. This paper describes two distributed DSS techniques for efficient spectrum sharing across multiple satellite systems (geostationary and non-geostationary satellites with earth stations in motion) and terrestrial networks, with a focus on increasing spectrum utilization and minimizing the impact of interference between satellite and terrestrial segments. Two relevant SATCOM use cases have been selected for dynamic spectrum sharing: the opportunistic sharing of satellite and terrestrial systems in (i) downlink Ka-band and (ii) uplink Ka-band. For the two selected use cases, the performance of proposed DSS techniques has been analyzed and compared to static spectrum allocation. Notable performance gains have been obtained.

Estilos ABNT, Harvard, Vancouver, APA, etc.

14

Nguyen, Tien M., Khanh D. Pham, John Nguyen, Genshe Chen, Charles H. Lee e Sam Behseta. "A Review of SATis5: Perspectives on Commercial and Defense 5G SATCOM Integration". Encyclopedia 2, n.º 3 (7 de julho de 2022): 1296–321. http://dx.doi.org/10.3390/encyclopedia2030087.

Texto completo da fonte

Resumo:

This review provides a comprehensive review of past and existing works on 5G systems with a laser focus on 5G Satellite Integration (SATis5) for commercial and defense applications. The holistic survey approach is used to gain an in-depth understanding of 5G-Terrestrial Network (5G-TN), 5G-Non-Terrestrial Network (5G-NTN), SATis5 testbeds, and projects along with related SATis5 architectures. Based on the survey results, the review provides (i) outlook perspectives on potential SATis5 architectures for current and future integrated defense and commercial satellite communication (SATCOM) with 5G systems, and (ii) a thorough understanding of problems associated with anticipated outlooks and corresponding studies addressing these problems. The commercial SATis5 architectures discussed here can be extended to civilian SATCOM applications.

Estilos ABNT, Harvard, Vancouver, APA, etc.

15

Kohl, Marcel, e Friedrich Jondral. "Interference on satcom up-links and its suppression". International Journal of Satellite Communications 16, n.º 3 (maio de 1998): 147–53. http://dx.doi.org/10.1002/(sici)1099-1247(199805/06)16:3<147::aid-sat601>3.0.co;2-f.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

16

Thomas, Ludovic, Emmanuel Dubois, Nicolas Kuhn e Emmanuel Lochin. "Google QUIC performance over a public SATCOM access". International Journal of Satellite Communications and Networking 37, n.º 6 (27 de fevereiro de 2019): 601–11. http://dx.doi.org/10.1002/sat.1301.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

17

Kim, Seong-Hyoung, Yifei Chen e Youngoo Yang. "Ku-Band GaN Power Amplifier MMIC for SATCOM". Journal of Korean Institute of Electromagnetic Engineering and Science 34, n.º 11 (novembro de 2023): 785–90. http://dx.doi.org/10.5515/kjkiees.2023.34.11.785.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

18

Sloan, Elinor. "Communications satellites in Canadian security policy: History and prospects". International Journal: Canada's Journal of Global Policy Analysis 76, n.º 2 (18 de maio de 2021): 204–20. http://dx.doi.org/10.1177/00207020211016476.

Texto completo da fonte

Resumo:

This article traces Canada’s early interest in space, before turning to its late 1960s decision to focus on a domestic, commercial/civilian communications satellite system in geostationary orbit and the subsequent decline in Canada’s military space efforts. It then highlights the wake-up call of the 1991 Gulf War, which demonstrated the critical importance of military communications satellites to future operations, and the steps Canada has taken to gain assured access to such satellites in the decades since. The final section outlines recent advances in low Earth orbit satellite communications (LEO satcom) and the ways in which these systems can address shortfalls in their geostationary cousins. Drawing reference to a new international security environment, it concludes that Canada should move expeditiously to incorporate LEO satcom into efforts to address the growing imperative of military satellite communications in the Canadian Arctic.

Estilos ABNT, Harvard, Vancouver, APA, etc.

19

Wang, Jianing, Yuanyu Zhang, Shuangrui Zhao, Ji He, Yulong Shen e Xiaohong Jiang. "A Survey on Authentication in Satellite Internet". Journal of Networking and Network Applications 2, n.º 4 (2022): 183–94. http://dx.doi.org/10.33969/j-nana.2022.020406.

Texto completo da fonte

Resumo:

Satellite Internet is a promising technology that provides global connectivity and has attracted widespread attention from both industry and academia. However, the open nature of wireless communication links renders Satellite Internet vulnerable to signal spoofing and illegal access attacks. Authentication has been recognized as an effective countermeasure to these attacks. Therefore, this paper presents a comprehensive survey of existing authentication schemes in Satellite Internet for the first time. We categorize existing authentication schemes into two main scenarios, i.e., the Satellite-based Communication (SATCOM) system and the Global Navigation Satellite System (GNSS) scenario. We further divide the literature in the SATCOM scenario into five sub-categories and that in the GNSS scenario into two sub-categories. Finally, we discuss the challenges that existing authentication schemes are facing and will face and further present some future research directions.

Estilos ABNT, Harvard, Vancouver, APA, etc.

20

Ortiz, Flor, Victor Monzon Monzon Baeza, Luis M. Garces-Socarras, Juan A. Vásquez-Peralvo, Jorge L. Gonzalez, Gianluca Fontanesi, Eva Lagunas, Jorge Querol e Symeon Chatzinotas. "Onboard Processing in Satellite Communications Using AI Accelerators". Aerospace 10, n.º 2 (19 de janeiro de 2023): 101. http://dx.doi.org/10.3390/aerospace10020101.

Texto completo da fonte

Resumo:

Satellite communication (SatCom) systems operations centers currently require high human intervention, which leads to increased operational expenditure (OPEX) and implicit latency in human action that causes degradation in the quality of service (QoS). Consequently, new SatCom systems leverage artificial intelligence and machine learning (AI/ML) to provide higher levels of autonomy and control. Onboard processing for advanced AI/ML algorithms, especially deep learning algorithms, requires an improvement of several magnitudes in computing power compared to what is available with legacy, radiation-tolerant, space-grade processors in space vehicles today. The next generation of onboard AI/ML space processors will likely include a diverse landscape of heterogeneous systems. This manuscript identifies the key requirements for onboard AI/ML processing, defines a reference architecture, evaluates different use case scenarios, and assesses the hardware landscape for current and next-generation space AI processors.

Estilos ABNT, Harvard, Vancouver, APA, etc.

21

Borek, Rafał, Justyna Woźnica e Marek Malawski. "The satellite constellations in the respond to the governmental and military technological requirements of the current space communication trends." Przegląd Nauk o Obronności, n.º 11 (12 de abril de 2022): 114–33. http://dx.doi.org/10.37055/pno/148151.

Texto completo da fonte

Resumo:

ObjectivesThe deliberation issues of this article are focusing on the satellite constellations as the governmental and military technological requirements responding to the current space communication trendsMethodsFor the purposes of this research, the following theoretical research methods were applied: analysis, synthesis, abstraction, generalisation and inference.ResultsPaper reveals a brief description of the satcom evolution, as well as, the market analysis of current and emerging trends which clearly indicate that the small satellites and their constellations are presumed to remain the largest and the fastest growing segment both for the structured institutions of European Members in the governmental and military area. This institution performs the solution for innovative R&D projects and in more independent perspective acts with the business domain or administrative diplomatic efforts to create the balanced synergy in undertaken projects for worldwide security factor. A short, non-technical description of a set of general requirements of civ-mil users for the satcom is also presented in this paper.ConclusionsThe research results presented in the analysed studies are useful for providing the worldwide standards of security and order in spite of developing technologies and competitiveness in faster data processing of outer space technology requirements. There shall be taken into consideration the solution of bilateral cooperation of EU institutions and non- structured EU entities under the common agenda of European investment in the space technologies and science as the resilient structure to strengthen European Continent as the global actor and expert in the government and military requirements of the current satcom trends

Estilos ABNT, Harvard, Vancouver, APA, etc.

22

Zhu, Yazhou, Christian A. Hofmann e Andreas Knopp. "Distributed Resource Optimization for NOMA Transmission in Beamforming SATCOM". IEEE Journal on Selected Areas in Communications 40, n.º 4 (abril de 2022): 1190–209. http://dx.doi.org/10.1109/jsac.2022.3143215.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

23

Winter, Stephan P., e Andreas Knopp. "Modeling of Fixed Service Interference in Aeronautical SATCOM Channels". IEEE Transactions on Aerospace and Electronic Systems 58, n.º 2 (abril de 2022): 942–61. http://dx.doi.org/10.1109/taes.2021.3117088.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

24

Knisely, A. J., e A. J. Terzuoli. "WIDEBAND SATCOM MODEL: EVALUATION OF NUMERICAL ACCURACY AND EFFICIENCY". ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences V-3-2020 (3 de agosto de 2020): 105–10. http://dx.doi.org/10.5194/isprs-annals-v-3-2020-105-2020.

Texto completo da fonte

Resumo:

Abstract. The spectral method is typically applied as a simple and efficient method to solve the parabolic wave equation in phase screen scintillation models. The critical factors that can greatly affect the spectral method accuracy is the uniformity and smoothness of the input function. This paper observes these effects on the accuracy of the finite difference and the spectral methods applied to a wideband SATCOM signal propagation model simulated in the ultra-high frequency (UHF) band. The finite difference method uses local pointwise approximations to calculate a derivative. The spectral method uses global trigonometric interpolants that achieve remarkable accuracy for continuously differentiable functions. The differences in accuracy are presented for a Gaussian lens and Kolmogorov phase screen. The results demonstrate loss of accuracy in each method when a phase screen is applied, despite the spectral method's computational efficiency over the finite difference method. These results provide meaningful insights when discretizing an interior domain and solving the parabolic wave equation to obtain amplitude and phase of a signal perturbation.

Estilos ABNT, Harvard, Vancouver, APA, etc.

25

Turner, Steve. "The GAN Era has Arrived in SATCOM Power Amplifiers". Journal of Siberian Federal University. Engineering & Technologies 8, n.º 3 (maio de 2015): 297–303. http://dx.doi.org/10.17516/1999-494x-2015-8-3-297-303.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

26

Kong, Jinping, Zhengfeng Xu e Botao Wu. "Research on Predicting Drive Current of Shipborne Satcom Antenna". MATEC Web of Conferences 22 (2015): 02028. http://dx.doi.org/10.1051/matecconf/20152202028.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

27

Yuan, Weile, Xianling Liang, Lina Zhang, Junping Geng, Weiren Zhu e Ronghong Jin. "Rectangular Grating Waveguide Slot Array Antenna for SATCOM Applications". IEEE Transactions on Antennas and Propagation 67, n.º 6 (junho de 2019): 3869–80. http://dx.doi.org/10.1109/tap.2019.2905784.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

28

Farserotu, J., e R. Prasad. "Broadband wide area networking via IP/ATM over SATCOM". IEEE Communications Magazine 37, n.º 5 (maio de 1999): 148–57. http://dx.doi.org/10.1109/35.762871.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

29

Farserotu, J., e R. Prasada. "Broadband wide-area networking via IP/ATM over SATCOM". IEEE Journal on Selected Areas in Communications 17, n.º 2 (1999): 270–85. http://dx.doi.org/10.1109/49.748811.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

30

Heimbs, Sebastian, Tim Wagner, Heinz Meister, Clemens Brand e Mircea Calomfirescu. "Bird strike on aircraft radome: Dynamic characterisation of quartz fibre composite sandwich for accurate, predictive impact simulations". EPJ Web of Conferences 183 (2018): 01007. http://dx.doi.org/10.1051/epjconf/201818301007.

Texto completo da fonte

Resumo:

This study assesses the bird strike resistance of the satellite communication (SatCom) radome of a medium altitude, long endurance (MALE) remotely piloted aircraft system (RPAS), which is designed as a lightweight sandwich structure with thin quartz fibre composite skins and a cellular honeycomb core. In order to perform accurate, predictive numerical bird strike simulations, the building block approach was applied, involving extensive experimental characterisation and model validation of the materials and structures from simple coupon level up to full-scale radome level. Coupon tests of the quartz fibre composite skin material under high-rate dynamic loading revealed significant strain rate effects, which needed to be taken into account in the simulation model in order to predict the structural response under high-velocity bird strike loading. In summary, this work presents a systematic and detailed approach for obtaining validated modelling methods for high-velocity impact analyses, which could be used efficiently for various design and parameter studies during the development of the SatCom radome.

Estilos ABNT, Harvard, Vancouver, APA, etc.

31

Cai, Bowen, Qianqian Zhang, Jungang Ge e Weiliang Xie. "Resource Allocation for Cognitive LEO Satellite Systems: Facilitating IoT Communications". Sensors 23, n.º 8 (11 de abril de 2023): 3875. http://dx.doi.org/10.3390/s23083875.

Texto completo da fonte

Resumo:

Due to the characteristics of global coverage, on-demand access, and large capacity, the low earth orbit (LEO) satellite communication (SatCom) has become one promising technology to support the Internet-of-Things (IoT). However, due to the scarcity of satellite spectrum and the high cost of designing satellites, it is difficult to launch a dedicated satellite for IoT communications. To facilitate IoT communications over LEO SatCom, in this paper, we propose the cognitive LEO satellite system, where the IoT users act as the secondary user to access the legacy LEO satellites and cognitively use the spectrum of the legacy LEO users. Due to the flexibility of code division multiple access (CDMA) in multiple access and the wide use of CDMA in LEO SatCom, we apply CDMA to support cognitive satellite IoT communications. For the cognitive LEO satellite system, we are interested in the achievable rate analysis and resource allocation. Specifically, considering the randomness of spreading codes, we use the random matrix theory to analyze the asymptotic signal-to-interference-plus-noise ratios (SINRs) and accordingly obtain the achievable rates for both legacy and IoT systems. The power of the legacy and IoT transmissions at the receiver are jointly allocated to maximize the sum rate of the IoT transmission subject to the legacy satellite system performance requirement and the maximum received power constraints. We prove that the sum rate of the IoT users is quasi-concave over the satellite terminal receive power, based on which the optimal receive powers for these two systems are derived. Finally, the resource allocation scheme proposed in this paper has been verified by extensive simulations.

Estilos ABNT, Harvard, Vancouver, APA, etc.

32

Woo, Byung-Seok. "Design of a Simultaneously Operable Tri-band Antenna for SATCOM". Journal of The Institute of Internet, Broadcasting and Communication 15, n.º 2 (30 de abril de 2015): 195–202. http://dx.doi.org/10.7236/jiibc.2015.15.2.195.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

33

Lambard, T., O. Lafond, M. Himdi, H. Jeuland, S. Bolioli e Laurent Le Coq. "Ka-Band Phased Array Antenna for High-Data-Rate SATCOM". IEEE Antennas and Wireless Propagation Letters 11 (2012): 256–59. http://dx.doi.org/10.1109/lawp.2012.2189747.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

34

Fairhurst, G. "On-board processing for anti-jam packet data satcom services". Electronics & Communications Engineering Journal 4, n.º 3 (1992): 115. http://dx.doi.org/10.1049/ecej:19920021.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

35

Radley, Charles F., e Thomas M. Eubanks. "GNSS with satcom networks to dramatically improve space situational awareness". Journal of Space Safety Engineering 7, n.º 3 (setembro de 2020): 307–11. http://dx.doi.org/10.1016/j.jsse.2020.08.005.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

36

Vandamme, Patrick, Tho Le-Ngoc e Kamilo Feher. "Digital Transmission Techniques for Spectral Efficiency Improvement of SATCOM Systems". IETE Journal of Research 36, n.º 1 (janeiro de 1990): 41–49. http://dx.doi.org/10.1080/03772063.1990.11436855.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

37

Reese, Mark S., Constantine A. Balanis, Craig R. Blncher e George C. Barber. "Modeling and Simulation of a Helicopter-Mounted SATCOM Antenna Array". IEEE Antennas and Propagation Magazine 53, n.º 2 (abril de 2011): 51–60. http://dx.doi.org/10.1109/map.2011.5949326.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

38

Brennan, P. V. "Low cost phased array antenna for land-mobile satcom applications". IEE Proceedings H Microwaves, Antennas and Propagation 138, n.º 2 (1991): 131. http://dx.doi.org/10.1049/ip-h-2.1991.0022.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

39

MATTOS, PHILIP, e MARK BEACH. "A Totally Software Approach for an Integrated GPS/SATCOM Receiver". Navigation 38, n.º 2 (junho de 1991): 191–204. http://dx.doi.org/10.1002/j.2161-4296.1991.tb01723.x.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

40

Bilal, Muhammad, Rashid Saleem, Tayyab Shabbir e M. Farhan Shafique. "A novel miniaturized FSS based electromagnetic shield for SATCOM applications". Microwave and Optical Technology Letters 59, n.º 9 (27 de junho de 2017): 2107–12. http://dx.doi.org/10.1002/mop.30696.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

41

Xi, Yanpeng, Jian Liu e Wenhao Zhao. "SATCOM Earth Station Arrays Anti-Jamming Based on MVDR Algorithm". Applied Sciences 13, n.º 14 (19 de julho de 2023): 8337. http://dx.doi.org/10.3390/app13148337.

Texto completo da fonte

Resumo:

In modern life, a large amount of information is transmitted through satellites. The anti-jamming ability of satellite communication earth stations is the basis for ensuring the smooth flow of information. In the case that multiple small earth stations cannot communicate due to jamming, the minimum variance distortionless response (MVDR) algorithm based on reflector antenna array is proposed. Firstly, the gain expression of satellite communication earth station antenna is derived, and the mathematical model of the received signal of the reflector antenna array is established. Then, the MVDR beamforming algorithm based on the reflector antenna is proposed and applied to the satellite communication earth station reflector antenna array, and the anti-jamming capability of the reflector antenna array using this algorithm is analyzed through simulation. The simulation results show that the earth station reflector antenna array using MVDR algorithm can effectively achieve array gain of the direction of the satellite signal, suppress the jamming signals, increase the output signal to interference plus noise ratio (SINR) of the reflector antenna array, and increase the output signal to jamming plus noise ratio with the increase in the number of snapshots.

Estilos ABNT, Harvard, Vancouver, APA, etc.

42

Jung, Minchae, Taehyoung Kim e Hyukmin Son. "Performance Analysis of RIS-Assisted SatComs Based on a ZFBF and Co-Phasing Scheme". Mathematics 12, n.º 8 (21 de abril de 2024): 1257. http://dx.doi.org/10.3390/math12081257.

Texto completo da fonte

Resumo:

In recent high-throughput satellite communication (SatCom) systems, the use of reconfigurable intelligent surfaces (RISs) has emerged as a promising solution to improve spectral efficiency and extend coverage in areas with limited terrestrial network access. However, the RIS may amplify the inter-beam interference (IBI) caused by multibeam transmission at the satellite, and multiple RISs can also cause inter-RIS interference (IRI) to terrestrial users. In this paper, the performance of the RIS-assisted SatCom system is asymptotically analyzed for both full and partial channel state information (CSI) scenarios. In particular, zero-forcing beamforming is considered as the active beamforming for data transmission, while the co-phasing scheme is considered as the passive beamforming for RIS reflection. Based on the asymptotic analyses, deterministic active and passive beamforming techniques using partial CSI are proposed that can gradually eliminate both IBI and IRI, ultimately achieving ideal performance. Simulation results validate the accuracy of asymptotic analyses and demonstrate the superiority of deterministic active and passive beamforming techniques using partial CSI. The simulation results also confirm that the proposed beamforming can achieve approximately 92.8% of the ideal performance, even though it only requires partial CSI.

Estilos ABNT, Harvard, Vancouver, APA, etc.

43

Catalani, Alfredo, Giovanni Toso, Piero Angeletti, Mario Albertini e Pasquale Russo. "Development of Enabling Technologies for Ku-Band Airborne SATCOM Phased-Arrays". Electronics 9, n.º 3 (16 de março de 2020): 488. http://dx.doi.org/10.3390/electronics9030488.

Texto completo da fonte

Resumo:

In the paper the development of a fully electronic transmit-receive phased-array antenna system in Ku-band for aircraft communications via satellite is presented. Particular emphasis has been placed in the improvement of the following key elements: a dual-polarization self-diplexing radiating element, a transmit/receive active module with full polarization agility based on a digital vector modulator and a SiGe multinode MMIC. The optimized antenna elements enable a significant improvement towards the realization of a future affordable commercial product for satellite communications.

Estilos ABNT, Harvard, Vancouver, APA, etc.

44

Cho, Gyuhan, e Gwang Tae Kim. "Monopulse Tracking Performance of a Satcom Antenna on a Moving Platform". Journal of electromagnetic engineering and science 17, n.º 3 (31 de julho de 2017): 120–25. http://dx.doi.org/10.5515/jkiees.2017.17.3.120.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

45

Dell Kronewitter, F., Bo Ryu, Zhensheng Zhang e Liangping Ma. "TCP accelerator for DVB-RCS SATCOM dynamic bandwidth environment with HAIPE". Journal of Communications and Networks 13, n.º 5 (outubro de 2011): 518–24. http://dx.doi.org/10.1109/jcn.2011.6112309.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

46

Yan, Jian, Xiang Chen e Chunli Liu. "Capacity maximization based power loading analysis for digital channelized satcom systems". China Communications 12, n.º 5 (maio de 2015): 64–74. http://dx.doi.org/10.1109/cc.2015.7112045.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

47

Monni, S., A. Neto, G. Gerini, F. Nennie e A. Tijhuis. "Frequency-Selective Surface to Prevent Interference Between Radar and SATCOM Antennas". IEEE Antennas and Wireless Propagation Letters 8 (2009): 220–23. http://dx.doi.org/10.1109/lawp.2009.2013166.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

48

Yuan, Weile, Xianling Liang, Lina Zhang, Junping Geng, Weiren Zhu e Ronghong Jin. "Grating ridged waveguide V‐shaped slot array antenna for SATCOM applications". Electronics Letters 55, n.º 4 (fevereiro de 2019): 170–72. http://dx.doi.org/10.1049/el.2018.7173.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

49

Del Mastro, Michele, Mauro Ettorre e Anthony Grbic. "Dual-Band, Orthogonally-Polarized LP-to-CP Converter for SatCom Applications". IEEE Transactions on Antennas and Propagation 68, n.º 9 (setembro de 2020): 6764–76. http://dx.doi.org/10.1109/tap.2020.2989868.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

50

Meric, Hugo, Jerome Lacan, Fabrice Arnal, Guy Lesthievent e Marie-Laure Boucheret. "Combining Adaptive Coding and Modulation With Hierarchical Modulation in Satcom Systems". IEEE Transactions on Broadcasting 59, n.º 4 (dezembro de 2013): 627–37. http://dx.doi.org/10.1109/tbc.2013.2268694.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Oferecemos descontos em todos os planos premium para autores cujas obras estão incluídas em seleções literárias temáticas. Contate-nos para obter um código promocional único!