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1

Dr.A.Shaji, George. "OneWeb: Revolutionizing Digital Connectivity in India." Partners Universal International Innovation Journal (PUIIJ) 01, no. 04 (2023): 72–97. https://doi.org/10.5281/zenodo.8264303.

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This paper examines the potential for OneWeb, a global communications company, to transform digital connectivity across India through its innovative satellite internet technology. OneWeb aims to provide universal internet access using a constellation of low Earth orbit (LEO) satellites that enable low latency, high-speed data transmission. With much of rural India lacking reliable internet access and many citizens still digitally excluded, OneWeb's services could significantly bridge the nation's digital divide. This paper utilizes a survey methodology to assess consumer perspectives in India on OneWeb's forthcoming services. A randomized sample of 1,200 Indian internet users across urban and rural areas evaluated OneWeb on metrics of speed, affordability, accessibility, and reliability. Key findings indicate high demand for OneWeb in undersupplied regions, with 67% of rural respondents anticipating switching to OneWeb satellite internet once available. However, cost remains a prohibitive factor, with 82% of participants expressing concern over anticipated pricing. Using Poisson regression analysis, the survey further identified income level, geographical location, and quality of current internet connection as significant predictors of willingness to adopt OneWeb services. While highlighting some barriers to access, these results overwhelmingly confirm India's high need for improved digital infrastructure. With strategic investments from Indian conglomerate Bharti Global, OneWeb is well-poised to deliver transformative internet connectivity solutions across India. This study provides key consumer insights to inform OneWeb's India market entry strategy. Findings will further guide policymakers in fostering digital inclusion and harnessing satellite technology to drive economic growth. By democratizing internet access, OneWeb aims to empower hundreds of millions of unconnected Indians through digital literacy and skills development.
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Chamussy, Nicolas. "De nouvelles chaînes industrielles, l’exemple de OneWeb." Annales des Mines - Réalités industrielles Mai 2019, no. 2 (2019): 59. http://dx.doi.org/10.3917/rindu1.192.0059.

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3

Zhi, Hui, Xiaojun Jiang, and Jianfeng Wang. "Multicolour photometry of LEO mega-constellations Starlink and OneWeb." Monthly Notices of the Royal Astronomical Society 530, no. 4 (2024): 5006–15. http://dx.doi.org/10.1093/mnras/stae693.

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ABSTRACT The development of low earth orbit (LEO) mega-constellation fundamentally threatens ground-based optical astronomical observations. To study the photometric properties of the LEO mega-constellations, we used the Xinglong 50 cm telescope to conduct a large-sample, high-precision, and multicolour target-tracking photometry of two typical LEO mega-constellations: Starlink and OneWeb. Over a three-month observation period starting on 2022 January 1, we collected 1447 light curves of 404 satellites in four typical versions: Starlink v1.0, DarkSat, VisorSat, Starlink v1.5, and OneWeb. According to data statistics, Starlink v1.0 has the smallest median magnitude at clear and Sloan Digital Sky Survey gri band, and OneWeb is the dimmest bus. The brightness of Starlink v1.5 is slightly brighter than VisorSat. We construct a detailed photometric model with solar phase angle variations by calculating the illumination-visibility geometry based on the orbital parameters. Our data analysis shows that the solar phase angle is the significant characteristic which influencing Starlink satellites’ brightness, but it is not sensitive to OneWeb satellites. VisorSat and Starlink v1.5 versions, which are equipped with deployable visors, have significantly reduced scattered light compared to the previous Starlink v1.0 version. The multiband LOWESS and colour index are analysed in characterizing the energy and colour features of LEO mega-constellation satellites. This work found that the proportion of scattered sunlight mitigation achieved with VisorSat and Starlink v1.5 was 55.1 and 40.4 per cent, respectively. The colour index of different buses shows an evident clustering feature. Our observation and analysis could provide valuable quantitative data and photometric models, which can contribute to assessing the impact of LEO mega-constellations on astronomical observations.
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Pritchard-Kelly, Ruth, and John Costa. "Low Earth Orbit Satellite Systems." Journal of Telecommunications and the Digital Economy 10, no. 1 (2022): 1–22. http://dx.doi.org/10.18080/jtde.v10n1.552.

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Satellites have been around for many decades, yet the low Earth orbit (LEO) was avoided as the cost exceeded the demand until recently. This paper is based on a live presentation to the Australian Telecommunications Association (TelSoc) by Ruth Pritchard-Kelly, Senior Advisor on Regulatory Affairs for OneWeb, and was chaired by TelSoc Broadband Futures Group member, John Costa. This paper describes the new generation of LEO satellites, how they substantially differ from earlier satellites, and the factors now making them not only viable but increasingly indispensable as part of a global communication ecosystem. The paper then introduces OneWeb’s specific LEO plans, including details about deployment in Australia.
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5

Zou, Cheng, Haiwang Wang, Jiachao Chang, Fengwei Shao, Lin Shang, and Guotong Li. "Optimal Progressive Pitch for OneWeb Constellation with Seamless Coverage." Sensors 22, no. 16 (2022): 6302. http://dx.doi.org/10.3390/s22166302.

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Large-scale broadband low earth orbit (LEO) satellite systems have become a possibility due to decreased launch costs and rapidly evolving technology. Preventing huge LEO satellite constellations from interfering with the geostationary earth orbit (GSO) satellite system, progressive pitch is a technique to avoid interference with the GSO satellite system that allows the LEO satellite system to maintain a certain angle of separation from the GSO satellite system. Aside from interference avoidance, there is also a need to ensure seamless coverage of the LEO constellation and to optimize the overall transmission capacity of the LEO satellite as much as possible, making it extremely complex to design an effective progressive pitch plan. This paper models an inline interference event and seamless coverage and builds an optimization problem by maximizing transmission capacity. This paper reformulates the problem and designs a genetic algorithm to solve it. From the simulation results, the strategy can avoid harmful interference to the GSO satellite system and ensure the seamless coverage of the LEO constellation, and the satellite transmission capacity is also maximized.
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Shufang, Wu, Wang Wei, Matthias G.R. Faes, and Wu Yuedong. "A review of research on the development of low-orbit Internet constellations." Scientific Insights and Discoveries Review 4 (October 14, 2024): 138–56. http://dx.doi.org/10.59782/sidr.v4i1.124.

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In recent years, with the surge in Internet users, innovative companies such as SpaceX and OneWeb have planned to build low-orbit Internet constellations, triggering a global boom in the development of low-orbit satellite Internet constellations. Therefore, it is of great significance to study the development of low-orbit Internet constellations at home and abroad and the technical difficulties currently faced by low-orbit Internet constellations in their development. This paper first introduces three representative low-orbit Internet constellation plans abroad (Starlink, OneWeb, Lightspeed) and the latest development of domestic constellations. Then, based on the characteristics of low-orbit Internet constellations, the five major technical challenges faced by low-orbit Internet constellations are analyzed in detail: constellation relative motion evolution prediction, constellation autonomous navigation and orbit determination, constellation variable path planning, constellation self-organization collaborative control, constellation communication and network services. Finally, based on the current development trend of low-orbit Internet constellations, suggestions are given for the development of low-orbit Internet constellations in my country based on my country's national conditions.
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Li, Ting, Jin Jin, Wei Li, Zixuan Ren, and Linling Kuang. "Research on interference avoidance effect of OneWeb satellite constellation's progressive pitch strategy." International Journal of Satellite Communications and Networking 39, no. 5 (2021): 524–38. http://dx.doi.org/10.1002/sat.1399.

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8

Martínez P., Francisco O., Gustavo A. Uribe G., and Fabián L. Mosquera P. "OneWeb: web content adaptation platform based on W3C Mobile Web Initiative guidelines." Ingeniería e Investigación 31, no. 1 (2011): 117–26. http://dx.doi.org/10.15446/ing.investig.v31n1.20571.

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Restrictions regarding navigability and user-friendliness are the main challenges the Mobile Web faces to be accepted worldwide. W3C has recently developed the Mobile Web Initiative (MWI), a set of directives for the suitable design and presentation of mobile Web interfaces. This article presents the main features and functional modules of OneWeb, an MWI-based Web content adaptation platform developed by Mobile Devices Applications Development Interest Group’s (W@PColombia) research activities, forming part of the Universidad de Cauca’s Telematics Engineering Group. Some performance measurement results and comparison with other Web content adaptation platforms are presented. Tests have shown suitable response times for Mobile Web environments; MWI guidelines were applied to over twenty Web pages selected for testing purposes.
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9

Radtke, Jonas, Christopher Kebschull, and Enrico Stoll. "Interactions of the space debris environment with mega constellations—Using the example of the OneWeb constellation." Acta Astronautica 131 (February 2017): 55–68. http://dx.doi.org/10.1016/j.actaastro.2016.11.021.

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10

Osoro, Ogutu B., and Edward J. Oughton. "A Techno-Economic Framework for Satellite Networks Applied to Low Earth Orbit Constellations: Assessing Starlink, OneWeb and Kuiper." IEEE Access 9 (2021): 141611–25. http://dx.doi.org/10.1109/access.2021.3119634.

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11

КУЛЬЧИЦЬКИЙ, Сергій, Олександр ГОЛОТЕНКО та Андрій СТАНЬКО. "ІНТЕГРАЦІЯ СУПУТНИКОВИХ ТА НАЗЕМНИХ БЕЗДРОТОВИХ МЕРЕЖ: АРХІТЕКТУРНІ КОНЦЕПЦІЇ". MEASURING AND COMPUTING DEVICES IN TECHNOLOGICAL PROCESSES, № 1 (27 лютого 2025): 383–92. https://doi.org/10.31891/2219-9365-2025-81-49.

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Інтеграція супутникових і наземних бездротових мереж розглядається як ключове рішення для забезпечення глобальної покриття і стійкості зв’язку в еру 5G та наступних поколінь. У цій роботі проаналізовано сучасні архітектурні концепції побудови гібридних супутниково-наземних мереж та визначено основні виклики, що постають при їх об’єднанні. Розглянуто перспективні технології і стандарти, зокрема неназемні мережі (NTN) у 5G, погляд на інтеграцію в майбутніх системах 6G, а також роль угруповань низькоорбітальних (LEO) супутників. Проведено аналіз прикладів реалізації інтегрованих систем – глобальних широкосмугових проєктів Starlink, OneWeb та Amazon Kuiper, з акцентом на їх архітектуру та досягнуті результати. На основі останніх досліджень і проєктів показано, що попри значні технічні перешкоди (затримки, доплерівський зсув, інтерференція, інфраструктурні та регуляторні проблеми), тенденції розвитку технологій мережевого керування, стандартів 3GPP та прогрес у виробництві супутників роблять інтеграцію супутникових і наземних мереж все більш досяжною.
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12

Korobcev, Ivan, and Marina Mishina. "OPTICAL OBSERVATIONS OF SMALL SPACECRAFT AND SPACE DEBRIS AT ISTP SB RAS SAYAN OBSERVATORY." Solar-Terrestrial Physics 5, no. 4 (2019): 97–100. http://dx.doi.org/10.12737/stp-54201913.

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Launch of several thousands of small spacecraft as part of satellite groups of various companies (OneWeb, SpaceX, etc.) is expected in the coming years. They will significantly increase the “population” in the low-orbit region. The spacecraft are designed mainly to provide telecommunications and remote sensing of Earth from space. They have a short lifetime. The use of high-speed sCMOS (scientific complementary metal-oxide-semiconductor) detectors in combination with medium diameter optical telescopes provides high temporal resolution, which allows us to get detailed brightness light curves and to estimate the state of small spacecraft. We present the technique and results of photometric measurements of small spacecraft obtained with the 1.6-meter AZT-33IK telescope of ISTP SB RAS Sayan Solar Observatory. Photometric measurements are shown to be an important source of information at various operational stages of satellites.
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Korobcev, Ivan, and Marina Mishina. "OPTICAL OBSERVATIONS OF SMALL SPACECRAFT AND SPACE DEBRIS AT ISTP SB RAS SAYAN OBSERVATORY." Solnechno-Zemnaya Fizika 5, no. 4 (2019): 117–21. http://dx.doi.org/10.12737/szf-54201913.

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Launch of several thousands of small spacecraft as part of satellite groups of various companies (OneWeb, SpaceX, etc.) is expected in the coming years. They will significantly increase the “population” in the low-orbit region. The spacecraft are designed mainly to provide telecommunications and remote sensing of Earth from space. They have a short lifetime. The use of high-speed sCMOS (scientific complementary metal-oxide-semiconductor) detectors in combination with medium diameter optical telescopes provides high temporal resolution, which allows us to get detailed brightness light curves and to estimate the state of small spacecraft. We present the technique and results of photometric measurements of small spacecraft obtained with the 1.6-meter AZT-33IK telescope of ISTP SB RAS Sayan Solar Observatory. Photometric measurements are shown to be an important source of information at various operational stages of satellites.
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14

Talanov, А. А., S. А. Fedotov, and А. М. Stepanov. "Radio Frequency Support for Space Systems Based on Multi-Satellite Constellations Taking into Account the ITU-R Requirements and the WRC-19 Results." Rocket-space device engineering and information systems 8, no. 4 (2021): 72–76. http://dx.doi.org/10.30894/issn2409-0239.2021.8.4.72.76.

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Deployment of space systems based on multi-satellite constellations to provide broadband Internet access and communication services acutely raises the question of their radio frequency support including issues of electromagnetic compatibility (EMC) between competing space systems using multi-satellite constellations (StarLink, OneWeb, Kuiper, etc.), their EMC with traditional space systems (satellite communication systems that employ spacecraft in geostationary and non-geostationary orbits, space systems of other services), as well as regulatory issues of entering into service and staged deployment of space systems. The article formulates the problematic issues of radio frequency support of modern space systems taking into account the trends of satellite constellations deployment and proposes the solutions with consideration to international and national requirements in the regulation of radio frequency spectrum including the ITU requirements and the requirements of Russian State Commission for Radio Frequencies. The paper shows the ways to share the radio frequency spectrum to meet new requirements of the World Radiocommunication Conference 2019 (WRC-19).
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Merino-Fernandez, Irene, Sunil L. Khemchandani, Javier del Pino, and Jose Saiz-Perez. "Phased Array Antenna Analysis Workflow Applied to Gateways for LEO Satellite Communications." Sensors 22, no. 23 (2022): 9406. http://dx.doi.org/10.3390/s22239406.

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Nowadays, mega-constellations of Low Earth Orbit (LEO) satellites have become increasingly important to provide high-performance Internet access with global coverage. This paper provides an updated comparison of four of the largest LEO mega-constellations: Telesat, SpaceX, OneWeb and Amazon. It describes the gateway design workflow from the patch antenna to phased array analysis. Patch antennas are developed for both transmission and reception after a thorough examination of the four systems. The results of electromagnetic simulation using Advanced Design Software (ADS) Momentum are shown, including their radiation pattern. Finally, a model of the gateway phased array using SystemVue is obtained using hexagonal, circular, and square arrays. According to the required effective isotropic radiated power (EIRP) and gain, the antenna sizes for the four constellations are estimated. As an example, for SpaceX constellation, a reception antenna with 8910 radiating elements using a hexagonal distribution with a gain of 46.9 dB and a sensitivity of −113.1 dBm was obtained.
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Vizzarri, Alessandro, Franco Mazzenga, and Romeo Giuliano. "Future Technologies for Train Communication: The Role of LEO HTS Satellites in the Adaptable Communication System." Sensors 23, no. 1 (2022): 68. http://dx.doi.org/10.3390/s23010068.

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The railway sector has been characterized by important innovations regarding digital technologies for train-to-ground communications. The actual GSM-R system is considered an obsolescent technology expected to be dismissed by 2030. The future communication systems in the rail sectors, such as Adaptable Communication Systems (ACS) and Future Railway Mobile Communication Systems (FRMCS), can manage different bearers as 4G/5G terrestrial technologies and satellites. In this environment, the new High Throughput Satellite (HTS) Low-Earth Orbit (LEO) constellations promise very interesting performances from data rate and coverage points of view. The paper analyzes the LEO constellations of Starlink and OneWeb using public data. The Rome–Florence railway line is considered for simulations. The results evidence the LEO satellite can provide interesting performance in terms of visibility, service connectivity, and traffic capacities (up to 1 Gbps). This feature enables the LEO to fully manage a high amount of data, especially in the railway scenarios of the next years when video data applications will be more present.
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Gao, Xiangqiang, Yingzhao Shao, Yuanle Wang, Hangyu Zhang, and Yang Liu. "Cooperative Caching and Resource Allocation in Integrated Satellite–Terrestrial Networks." Electronics 13, no. 7 (2024): 1216. http://dx.doi.org/10.3390/electronics13071216.

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Due to the rapid development of low earth orbit satellite constellations, e.g., Starlink, OneWeb, etc., integrated satellite-terrestrial networks have been viewed as a promising paradigm to globally provide satellite internet services for users. However, when the contents from ground data centers are provided for users by satellite networks, there will be high capital expenditures in terms of communication delay and bandwidth usage. To this end, in this paper, a cooperative-caching and resource-allocation problem is investigated in integrated satellite–terrestrial networks. Popular contents, which are cached on satellites and ground data centers, can be accessed via inter-satellite and satellite–terrestrial networks in a cooperative way. The optimization problem is formulated to jointly minimize the deployment costs of storage resource usage and network bandwidth consumption. A cooperative caching and resource allocation (CCRA) algorithm based on a neighborhood search is proposed to address the problem. The simulation results demonstrate that the proposed CCRA algorithm outperforms Greedy and BFS in reducing the deployment costs.
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18

Han, Ju. "Recent Progress and Future Development in Satellite Communication." Highlights in Science, Engineering and Technology 27 (December 27, 2022): 38–45. http://dx.doi.org/10.54097/hset.v27i.3719.

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In the era of high-speed communication, large-capacity broadband and multimedia personalization, satellite communication has become one of the most special ways of wireless communication. With the rapid development of satellite communication during recent years, many projects, like Oneweb, Starlink, and Telesat have been attempted. Based on higher and higher transmission speed demand, Satellite communication becomes a newly effective supplementation of traditional terrestrial station gradually. After nearly half a century of exploration, started from a live broadcast, broadband satellite constellation represented by Starlink had become mainstream application. The future communication system should be land, sea, and space integration. In this article, the phylogeny of SC, basic construct and some application will be discussed. Consider the specific applications, some challenges and future trend are also the focus. At the same time, the comparison between Satellite communication and terrestrial provision offers a thinking way of communication industry ecology. Nevertheless, the satellite communication system based on radio microwave communication still has some technical development problems and application difficulties, and it is necessary to seek breakthroughs in communication technology and hardware facilities.
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Farhangian, Farzan, and René Landry. "Multi-Constellation Software-Defined Receiver for Doppler Positioning with LEO Satellites." Sensors 20, no. 20 (2020): 5866. http://dx.doi.org/10.3390/s20205866.

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A Multi-Constellation Software-Defined Receiver (MC-SDR) is designed and implemented to extract the Doppler measurements of Low Earth Orbit (LEO) satellite’s downlink signals, such as Orbcomm, Iridium-Next, Globalstar, Starlink, OneWeb, SpaceX, etc. The Doppler positioning methods, as one of the main localization algorithms, need a highly accurate receiver design to track the Doppler as a measurement for Extended Kalman Filter (EKF)-based positioning. In this paper, the designed receiver has been used to acquire and track the Doppler shifts of two different kinds of LEO constellations. The extracted Doppler shifts of one Iridium-Next satellite as a burst-based simplex downlink signal and two Orbcomm satellites as continuous signals are considered. Also, with having the Two-Line Element (TLE) for each satellite, the position, and orbital elements of each satellite are known. Finally, the accuracy of the designed receiver is validated using an EKF-based stationary positioning algorithm with an adaptive measurement matrix. Satellite detection and Doppler tracking results are analyzed for each satellite. The positioning results for a stationary receiver showed an accuracy of about 132 m, which means 72% accuracy advancements compared to single constellation positioning.
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Lawler, Samantha M., Aaron C. Boley, and Hanno Rein. "Visibility Predictions for Near-future Satellite Megaconstellations: Latitudes near 50° Will Experience the Worst Light Pollution." Astronomical Journal 163, no. 1 (2021): 21. http://dx.doi.org/10.3847/1538-3881/ac341b.

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Abstract Megaconstellations of thousands to tens of thousands of artificial satellites (satcons) are rapidly being developed and launched. These satcons will have negative consequences for observational astronomy research, and are poised to drastically interfere with naked-eye stargazing worldwide should mitigation efforts be unsuccessful. Here we provide predictions for the optical brightnesses and on-sky distributions of several satcons, including Starlink, OneWeb, Kuiper, and StarNet/GW, for a total of 65,000 satellites on their filed or predicted orbits. We develop a simple model of satellite reflectivity, which is calibrated using published Starlink observations. We use this model to estimate the visible magnitudes and on-sky distributions for these satellites as seen from different places on Earth, in different seasons, and different times of night. For latitudes near 50° north and south, satcon satellites make up a few percent of all visible point sources all night long near the summer solstice, as well as near sunrise and sunset on the equinoxes. Altering the satellites’ altitudes only changes the specific impacts of the problem. Without drastic reduction of the reflectivities, or significantly fewer total satellites in orbit, satcons will greatly change the night sky worldwide.
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Sun, Tianyu, Min Hu, and Chaoming Yun. "Low-Orbit Large-Scale Communication Satellite Constellation Configuration Performance Assessment." International Journal of Aerospace Engineering 2022 (March 11, 2022): 1–8. http://dx.doi.org/10.1155/2022/4918912.

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A constellation configuration performance evaluation method is proposed for the performance evaluation of the low-orbit large-scale communication satellite constellations. The practicality and feasibility analysis of the constellation configuration is mainly studied from the constellation coverage performance. Based on the consideration of the coverage performance of the LEO satellite constellation, four simulation models are established for the single coverage rate, observation elevation angle, number of visible satellites under different observation elevation angles, and coverage efficiency of the constellation. A population distribution density function is established according to the characteristics of population distribution to find the average minimum observation elevation angle and the average number of visible satellites under the population distribution. The evaluation method is applied to three typical low-orbit large-scale communication satellite constellations, Telesat, OneWeb, and Starlink, to derive the coverage performance index values of each constellation and to compare and analyze the characteristics of the three constellations. The results show that the evaluation method can evaluate the configuration performance of different types of LEO large-scale constellations and provide a basis and reference for the optimal design and evaluation of future LEO large-scale constellation configurations.
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Hu, Jinghan Alina, Meredith L. Rawls, Peter Yoachim, and Željko Ivezić. "Satellite Constellation Avoidance with the Rubin Observatory Legacy Survey of Space and Time." Astrophysical Journal Letters 941, no. 1 (2022): L15. http://dx.doi.org/10.3847/2041-8213/aca592.

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Abstract We investigate a novel satellite avoidance strategy to mitigate the impact of large commercial satellite constellations in low-Earth orbit on the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST). We simulate the orbits of currently planned Starlink and OneWeb constellations (∼40,000 satellites) to test how effectively an upgraded Rubin scheduler algorithm can avoid them, and assess how the overall survey is affected. Given a reasonably accurate satellite orbit forecast, we find it is possible to adjust the scheduler algorithm to effectively avoid some satellites. Overall, sacrificing 10% of LSST observing time to avoid satellites reduces the fraction of LSST visits with streaks by a factor of 2. Whether such a mitigation will be required depends on the overall impact of streaks on science, which is not yet well quantified. This is due to a lack of adequate information about satellite brightness distributions as well as the impact of glints and low surface brightness residuals on alert purity and systematic errors in cosmological parameter estimation. A significant increase in the number of satellites or their brightness during Rubin Operations may make implementing this satellite avoidance strategy worthwhile.
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Tong, Jianfei, Cheng Wang, Xiaoyan Zhao, Gaofeng Cui, and Weidong Wang. "Cooperative Beam Association and Power Allocation in UD-LEO Satellite Communication Networks: A Spectrum Sharing Manner." Electronics 11, no. 3 (2022): 299. http://dx.doi.org/10.3390/electronics11030299.

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In recent years, the ultra-dense low Earth orbit (LEO) satellite communication (UD-LSC) networks such as SpaceX and OneWeb are under rapid development to provide worldwide and broadband services. However, the deployment of thousands of LEO satellites into space leads to the shortage of the orbital and the frequency resources. Spectrum sharing between geostationary Earth orbit (GEO) satellite systems and LEO satellite systems seems to be a promising way to alleviate the problem of restricted spectrum resources. In this paper, a joint cooperative beam association and power allocation scheme for the UD-LSC network to share the same spectrum with a GEO satellite system is considered. By exploiting the cooperative transmission between multiple LEO satellites, we first propose a many-to-many match game-based beam association (MGBA) algorithm to obtain a stable matching between LEO satellites and beam cells, and then, we propose a successive convex approximation (SCA)-based power allocation (SPA) algorithm to iteratively acquire the sub-optimal power allocation matrix. Simulation results show that the proposed MGBA-SPA scheme outperforms other contrast schemes from the perspective of communication satisfaction, and it realizes the balance between the traffic request and the provided capacity of each ground beam cell.
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Graydon, Matthew, and Lisa Parks. "‘Connecting the unconnected’: a critical assessment of US satellite Internet services." Media, Culture & Society 42, no. 2 (2019): 260–76. http://dx.doi.org/10.1177/0163443719861835.

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An estimated 4 billion people worldwide still lack reliable access to the Internet, with the majority concentrated in developing countries. It is within this context that a significant expansion of the satellite Internet industry is taking place, bringing grand visions of social and economic growth through connectivity. Previously dismissed as a limited technology due to high operating costs and latency, as well as the failure of early ventures like Teledesic, satellite Internet has re-emerged in recent years as a viable alternative to the time and energy-intensive practice of laying thousands of miles of fiber optic cable. Utilizing innovative non-synchronous orbit constellations of small, mass-produced satellites that lower production costs and improve latency to better compete with broadband, new Silicon Valley–related companies such as OneWeb, SpaceX, and O3b have promised cheap, high-speed Internet access throughout the world. Drawing upon industry research, site visits, and interviews with technical specialists, development experts, and other actors, this article briefly explores the history of satellite Internet services, analyzes the promises of emerging satellite Internet companies, and argues that without serious commitments from governments and the private sector to follow through on this rhetoric, satellite Internet technology could fail to reach the communities that need it most.
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Fratty, Ruben, Yuval Saar, Rajnish Kumar, and Shlomi Arnon. "Random Routing Algorithm for Enhancing the Cybersecurity of LEO Satellite Networks." Electronics 12, no. 3 (2023): 518. http://dx.doi.org/10.3390/electronics12030518.

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The recent expansion of networks of low-earth orbit (LEO) satellites such as Starlink, OneWeb, and Telesat and the evolution of communication systems toward B5G and 6G with densely interconnected devices could generate opportunities for various cyber attacks. As the satellite network offers many crucial services to the public and governmental organizations, cyberattacks pose severe risks to the communication infrastructure. In this study, we propose a random routing algorithm to prevent distributed denial-of-service (DDoS) attacks on an LEO satellite constellation network. The routing algorithm utilizes the classical algorithms, i.e., k-DG, k-DS, k-SP, and k-LO, by introducing randomness and selecting one with weighted probability distribution to increase the uncertainty in the algorithm. The study shows that the proposed random routing algorithm improves the average and median cost of the attacker against DDoS attacks while maintaining the functionality of the network. The algorithm is optimized by formulating a Bayesian optimization problem. In addition to providing an additional level of uncertainty in the routing, there is an improvement of 1.71% in the average cost and 2.05% in the median cost in a typical scenario. The algorithm causes the network to be robust to cyber attacks against LEO Satellite Networks (LSNs), however, similar to any other defensive measures, it reduces the network’s goodput.
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Zhu, Qinyu, Haicheng Tao, Yanhua Cao, and Xinhong Li. "Laser Inter-Satellite Link Visibility and Topology Optimization for Mega Constellation." Electronics 11, no. 14 (2022): 2232. http://dx.doi.org/10.3390/electronics11142232.

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In this paper, we begin by describing the Starlink constellation’s configuration plan, treating each satellite as a network node, naming and numbering the various nodes, and then classifying the laser interstellar links (LISLs) according to their orbital alignment and whether they are permanently visible. Whereupon, the method for calculating the respective theoretical interstellar distances required for establishing LISLs under two distinct orbital scenarios, co-orbital and hetero-orbital are analyzed, and the optimal phasing factors are proposed by solving an optimization algorithm for the shortest distance. The OneWeb and Starlink constellations, as well as the constellation states of various phasing factors are simulated, respectively. The Starlink constellation with F = 11 obtains the best coverage between 60° north and south latitudes predicated upon the analysis of the constellation N Asset Coverage. Following that, the first phase of the Starlink constellation deployment was modeled in order to analyze and count the number of permanent LISLs in orbit, adjacent to, and nearby. Subsequently, the characteristics of azimuthal, elevation, and range (AER) were subsequently analyzed to ascertain their variation law and to compile the number of permanent and temporary LISLs that could be established at various inter-distance ranges. Finally, predicated on the simulation results, the optimal LISLs connection strategy for the Starlink constellation is evaluated and a static topology for the constellation is constructed.
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Liu, Gaosai, Xinglong Jiang, Huawang Li, Siyue Sun, Zhenhua Zhang, and Guang Liang. "An Improved DTN Scheme for Large-Scale LEO Satellite Networks." Wireless Communications and Mobile Computing 2023 (February 21, 2023): 1–19. http://dx.doi.org/10.1155/2023/4899124.

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A large-scale low Earth orbit (LEO) satellite network has the characteristics of a complex link environment, a large number of satellites, and the limited resources of a single satellite. Applying traditional routing algorithms has disadvantages such as high overhead, high end-to-end latency, and low message delivery rate. This paper proposes an improved delay tolerant (DTN) scheme for large-scale LEO satellite networks (LIDTN) to improve transmission efficiency and reduce the resource overhead and end-to-end latency of large-scale satellite networks. This scheme improves the network performance in three aspects: next hop selection, congestion control mechanism, and acknowledgment mechanism. For the next hop selection, we propose an equivalent distance and priori knowledge-based forwarding strategy (EPFS), which has the advantages of low overhead, loop avoidance, and fast convergence. For congestion control, we put forward an emergency function-based bundle drop algorithm (EBDA). For acknowledging, we propose the virtual acknowledgment algorithm (VAA) by combining the characteristics of many path hops and high link disruption rates in large-scale constellations. Finally, we simulate and verify the LIDTN scheme on the OneWeb constellation. The results show that the LIDTN scheme is suitable for large-scale constellations, the EPFS algorithm can reduce the network overhead during data transmission, EBDA can reduce the bundle drop rate, and VAA can reduce the end-to-end latency. LIDTN provides a new solution for large-scale constellation communication.
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Tkachenko, I. S. "Analysis of key technologies for creating multisatellite orbital constellations of small spacecraft." Ontology of Designing 11, no. 4 (2021): 478–99. http://dx.doi.org/10.18287/2223-9537-2021-11-4-478-499.

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One of the key areas of modern world cosmonautics is the development of cluster space systems for various purposes, consisting of a large number of functioning spacecraft. This became possible due to a decrease in the mass of spacecraft due to the creation and use of new materials, the development of electronics and microelectromechanical systems, the use of the group launch method, the development of multi-agent technologies and inter-satellite communication sys-tems. There are projects of systems consisting of a large number of space objects, such as OneWeb, Planet, Starlink, Satellogic, etc. The main classes of devices used to create such multi-satellite systems are small satellites, including the number of micro (up to 100 kg) and nano (up to 10-15 kg) classes, which have significant advantages over heavy space-craft, especially in terms of the timing and cost of their creation. The deployment of multi-satellite constellations, in-cluding hundreds and thousands of satellites, requires fundamentally new approaches to the creation of spacecraft and the system as a whole at all stages of the life cycle. The article discusses the key technologies used to create multi-satellite orbital constellations based on small satellites at different stages of the life cycle - from the early stages of de-sign to the stage of operation and disposal (information from orbit). The experience of a joint project of Samara Univer-sity and the Progress Rocket and Space Center on the creation of a constellation of small spacecraft of the AIST series is presented.
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PhD, Stella Alexandrova. "Future trends of commercial In- Orbit Satellite Servicing, Active Debris Removal and End-Of Life services." Journal of Physics: Conference Series 2255, no. 1 (2022): 012014. http://dx.doi.org/10.1088/1742-6596/2255/1/012014.

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Abstract Space debris growth has become a major threat not only to satellites as well as to the safe operations of the International Space Station (ISS). In September 2021, there were more than 4,700 operational satellites, 36,5000 space debris objects larger than 10 cm and 1 000 000 pieces in the 1cm to 10 cm range. The total mass of all space objects in Earth Orbit is 9,600 tonnes[1]. The launches of Starlink, Amazon Kuiper and OneWeb satellite constellations will increase the threat of space debris collisions. Satellite owners, operators, space agencies and commercial players owning the mega-constellations will need to find economically viable ways to inspect, refuel, augment, extend and manage the lifetime of their satellites. Some of the emerging trends taking place in the space industry are on- orbit satellite servicing, active debris removal services and end-of life services. With the technology demonstrations on orbit of Mission Extension Vehicles (MEV-1), MEV-2 and ELSA-d missions promising In Orbit Satellite (IOS), markets are emerging and expected to reach up to $ 6.2 bln by 2030[2]. The objective of this paper is to identify the role of Bulgarian organisations in the future emerging of in- orbital satellite (IOS) and space situational services markets. Bulgaria’s historical space competencies can contribute to the development of user-driven services/ solutions for space debris inspection, collision avoidance, space robotics and in- orbit servicing and assembly. By encouraging the creation of a new space eco-system in the domain of space debris and space situational awareness in South-Eastern Europe, Bulgarian companies and research organisations are bound to play an important role in the future space robotics markets.
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Chistousov, Nikita Konstantinovich, Igor Anatolyevich Kalmykov, Daniil Vyacheslavovich Dukhovnyj, Maksim Igorevich Kalmykov, and Aleksandr Anatolyevich Olenev. "Adaptive Authentication Protocol Based on Zero-Knowledge Proof." Algorithms 15, no. 2 (2022): 50. http://dx.doi.org/10.3390/a15020050.

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Authentication protocols are expanding their application scope in wireless information systems, among which are low-orbit satellite communication systems (LOSCS) for the OneWeb space Internet, automatic object identification systems using RFID, the Internet of Things, intelligent transportation systems (ITS), Vehicular Ad Hoc Network (VANET). This is due to the fact that authentication protocols effectively resist a number of attacks on wireless data transmission channels in these systems. The main disadvantage of most authentication protocols is the use of symmetric and asymmetric encryption systems to ensure high cryptographic strength. As a result, there is a problem in delivering keys to the sides of the prover and the verifier. At the same time, compromising of keys will lead to a decrease in the level of protection of the transmitted data. Zero-knowledge authentication protocols (ZKAP) are able to eliminate this disadvantage. However, most of these protocols use multiple rounds to authenticate the prover. Therefore, ZKAP, which has minimal time costs, is developed in the article. A scheme for adapting protocol parameters has been developed in this protocol to increase its efficiency. Reductions in the level of confidentiality allow us to reduce the time spent on the execution of the authentication protocol. This increases the volume of information traffic. At the same time, an increase in the confidentiality of the protocol entails an increase in the time needed for authentication of the prover, which reduces the volume of information traffic. The FPGA Artix-7 xc7a12ticsg325-1L was used to estimate the time spent implementing the adaptive ZKAP protocol. Testing was performed for 32- and 64-bit adaptive authentication protocols.
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Krantz, Harrison, Eric C. Pearce, and Adam Block. "The Steward Observatory LEO Satellite Photometric Survey." Publications of the Astronomical Society of the Pacific 135, no. 1051 (2023): 095003. http://dx.doi.org/10.1088/1538-3873/acf40c.

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Abstract The Steward Observatory LEO Satellite Photometric Survey is a comprehensive observational survey to characterize the apparent brightness of the Starlink and OneWeb low Earth orbit satellites and evaluate the potential impact on astronomy. We report the results of over 16,000 independent measurements of nearly 2800 individual satellites. In addition to photometry, we also measured the astrometric position of each satellite and evaluated the accuracy of predicting satellite position with the available two-line element sets. The apparent brightness of a satellite seen in the sky is not constant and depends on the Sun-satellite-observer geometry. To capture this, we designed the survey to create an all-geometries set of measurements to fully characterize the brightness of each population of satellites as seen in the sky. We visualize the data with sky-plots that show the correlation of apparent brightness with on-sky position and relative Sun-satellite-observer geometry. The sky-plots show where in the sky the satellites are brightest. In addition to visual magnitudes, we also present two new metrics: the expected photon flux and the effective albedo. The expected photon flux metric assesses the potential impact on astronomy sensors by predicting the flux for a satellite trail in an image from a theoretical 1 m class telescope and sensor. The effective albedo metric assesses where a satellite is more reflective than baseline, which ties to the physical structure of the satellite and indicates the potential for brightness-reducing design changes. We intend to use this methodology and resulting data to inform the astronomy community about satellite brightness. Observing programs use a variety of telescopes and instruments and look at different parts of the sky. With the expected photon flux metric and a complete all-sky characterization of satellite brightness, observers can evaluate the potential impacts to their projects and possibly avoid the worst effects.
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ТАНАСІЙЧУК, Степан. "АНАЛІЗ МЕТОДІВ І ЗАСОБІВ КЕРУВАННЯ АВТОНОМНИМИ БЕЗПІЛОТНИМИ ЛІТАЛЬНИМИ АПАРАТАМИ". MEASURING AND COMPUTING DEVICES IN TECHNOLOGICAL PROCESSES, № 4 (30 листопада 2023): 127–33. http://dx.doi.org/10.31891/2219-9365-2023-76-16.

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Наголошено, що в даний час, безпілотні літальні апарати (БПЛА) використовуються в широкому діапазоні цивільних ролей, починаючи від пошуку та порятунку, спостереження, моніторингу дорожнього руху, моніторингу погоди та пожежогасіння, до персональних безпілотників та ділової фотографії на основі безпілотників, а також відеозйомки, сільського господарства та навіть служб доставки. БПЛА мають широке використання у війні з рф. Проаналізовано найбільш поширені методи керування БПЛА. Для основних методів дано опис. Сказано, що серед інтелектуальних моделей, які описують порядок переміщення БПЛА у просторі можна назвати метод побудови маршрутів БПЛА. В основі методу лежить використання математичного очікування інформаційної ентропії для оцінки оптимальності альтернативних варіантів маршруту. Останнім часом все частіше використовують тріангуляції Делоне для вирішення завдання планування маршрутів БПЛА. У цьому випадку маршрут формується у вигляді набору проміжних пунктів маршруту (ППМ), проходження яких є обов’язковим. На характер маршруту руху БПЛА між умовними точками на карті жорстких обмежень не накладається, що дозволяє будувати траєкторії, максимально враховують динамічні можливості БПЛА. Однак, відомі методи планування маршруту, що базуються на тріангуляції Делоне не враховують такі важливі особливості: наявність невизначеності в розташуванні джерел потенційної загрози (постів протиповітряної оборони противника); наявність у складі групи БПЛА різних типів, що передбачає їх ранжування за ступенем важливості; неоднорідність складу наземних цільових об’єктів, що вимагає в процесі планування обліку ступеня важливості кожного з них. Завдяки технічному прогресу у сфері супутникових технологій нині реалізуються проєкти низькоорбітальних систем (LEO). Kuiper від Amazon, Starlink від SpaceX і OneWeb – це три з основних розроблюваних проєктів угруповань супутників LEO наступного покоління, які обіцяють забезпечити високошвидкісне широкосмугове з’єднання з малою затримкою по всьому світу. Констатовано, що перспективним інноваційним обладнанням для керування БПЛА є використання бездротового зв’язку, що поєднує конвергенцію в наземних, супутникових та безпілотних станціях. Особливості структури атмосфери і переваги супутникових технологій дають змогу застосовувати багаторівневі висотні моделі, за допомогою яких можна збільшити пропускну здатність.
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Farhangian, Farzan, Hamza Benzerrouk, and Rene Landry. "Opportunistic In-Flight INS Alignment Using LEO Satellites and a Rotatory IMU Platform." Aerospace 8, no. 10 (2021): 280. http://dx.doi.org/10.3390/aerospace8100280.

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With the emergence of numerous low Earth orbit (LEO) satellite constellations such as Iridium-Next, Globalstar, Orbcomm, Starlink, and OneWeb, the idea of considering their downlink signals as a source of pseudorange and pseudorange rate measurements has become incredibly attractive to the community. LEO satellites could be a reliable alternative for environments or situations in which the global navigation satellite system (GNSS) is blocked or inaccessible. In this article, we present a novel in-flight alignment method for a strapdown inertial navigation system (SINS) using Doppler shift measurements obtained from single or multi-constellation LEO satellites and a rotation technique applied on the inertial measurement unit (IMU). Firstly, a regular Doppler positioning algorithm based on the extended Kalman filter (EKF) calculates states of the receiver. This system is considered as a slave block. In parallel, a master INS estimates the position, velocity, and attitude of the system. Secondly, the linearized state space model of the INS errors is formulated. The alignment model accounts for obtaining the errors of the INS by a Kalman filter. The measurements of this system are the difference in the outputs from the master and slave systems. Thirdly, as the observability rank of the system is not sufficient for estimating all the parameters, a discrete dual-axis IMU rotation sequence was simulated. By increasing the observability rank of the system, all the states were estimated. Two experiments were performed with different overhead satellites and numbers of constellations: one for a ground vehicle and another for a small flight vehicle. Finally, the results showed a significant improvement compared to stand-alone INS and the regular Doppler positioning method. The error of the ground test reached around 26 m. This error for the flight test was demonstrated in different time intervals from the starting point of the trajectory. The proposed method showed a 180% accuracy improvement compared to the Doppler positioning method for up to 4.5 min after blocking the GNSS.
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Westbrook, John, John Markley, Haruki Nakamura, Sameer Velankar, and Stephen Burley. "wwPDB OneDep validation services." Acta Crystallographica Section A Foundations and Advances 73, a2 (2017): C1323. http://dx.doi.org/10.1107/s2053273317082523.

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35

Hainaut, Olivier R., and Andrew P. Williams. "Impact of satellite constellations on astronomical observations with ESO telescopes in the visible and infrared domains." Astronomy & Astrophysics 636 (April 2020): A121. http://dx.doi.org/10.1051/0004-6361/202037501.

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The effect of satellite mega-constellations on astronomical observations in the visible, near-infrared, and thermal infrared domains is estimated using a simple methodology, which is applied to ESO telescopes and instruments as examples (radio and (sub-)millimetre domains are not considered here). The study considers a total of 18 constellations in development by SpaceX, Amazon, OneWeb, and others, with over 26 thousand satellites, constituting a representative distribution. This study uses a series of simplifications and assumptions in order to obtain conservative, order-of-magnitude estimates of the effects: the satellites are assumed to be uniformly spread over the Earth’s globe, and their magnitude is estimated using a simplistic model calibrated on actual observations. The effect on various types of ground-based telescopic observations is estimated using a geometric probabilistic approach. The “trains” of very-low altitude satellites typically observed immediately after launch are extremely bright due to their very low orbit. They also fall very quickly in the shadow of the Earth after sunset. However, this initial bright state is not considered further, as the satellites quickly disperse into their higher altitude orbits. The number of illuminated satellites from the constellations above the horizon of an observatory ranges from approximately 1600 immediately after sunset, decreasing to 1100 at the end of astronomical twilight, most of them (∼85%) close to the horizon (below 30° of elevation). The large majority of these satellites will be too faint to be seen with the naked eye: at astronomical twilight, 260 would be brighter than magnitude 6 (i.e. visible in exceptional conditions), 110 brighter than 5 (i.e. visible in good conditions). Again, most of them (∼95%) will be close to the horizon (below 30° of elevation). The number of naked-eye satellites plummets as the Sun reaches 30−40° of elevation below the horizon. Specular flares and occultations by satellites are expected to cause only negligible effects on telescopic astronomical observations. The light trail caused by the satellite would ruin a small fraction (below the 1% level) of telescopic exposures using narrow to normal field imaging or spectroscopic techniques in the visible and near-infrared during the first and last hours of the night. Similarly, the thermal emission of the satellite would affect only a negligible fraction of the observations in the thermal infrared domain. However, wide-field exposures and long medium-field exposures would be affected at the 3% level during the first and last hours of the night. Furthermore, ultra-wide imaging exposures on a very large telescope (where saturation of the satellite trails has a ruinous effect on the detectors, such as those from the National Science Foundation’s Vera C. Rubin Observatory, formerly known as LSST), would be significantly affected, with 30–40% of such exposures being compromised during the first and last hours of the night. Coordination and collaboration between the astronomical community, satellite companies, and government agencies are therefore critical to minimise and mitigate the effect on astronomical observations, in particular on survey telescopes.
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36

Anderlini, Tia K., David R. Bruce, and Diane Beauchemin. "Characterization of a 12 M KOH zincate fuel for green energy backup systems using flow injection coupled to inductively coupled plasma optical emission spectrometry." Journal of Analytical Atomic Spectrometry 34, no. 5 (2019): 899–905. http://dx.doi.org/10.1039/c9ja00012g.

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37

Haynes, P. D., C.-K. Skylaris, A. A. Mostofi, and M. C. Payne. "Density kernel optimization in the ONETEP code." Journal of Physics: Condensed Matter 20, no. 29 (2008): 294207. http://dx.doi.org/10.1088/0953-8984/20/29/294207.

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38

Wesley, J. P. "Oneway Sagnac device to measure absolute velocity." Foundations of Physics Letters 7, no. 5 (1994): 493–99. http://dx.doi.org/10.1007/bf02189253.

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39

Prentice, Joseph C. A., Jolyon Aarons, James C. Womack, et al. "The ONETEP linear-scaling density functional theory program." Journal of Chemical Physics 152, no. 17 (2020): 174111. http://dx.doi.org/10.1063/5.0004445.

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40

Yonemoto, Junichi, Hidenao Ideta, Kiwamu Sasaki, Simiyoshi Tanaka, Akira Hirose, and Chitoshi Oka. "The age of oneset of posterior vitreous detachment." Graefe's Archive for Clinical and Experimental Ophthalmology 232, no. 2 (1994): 67–70. http://dx.doi.org/10.1007/bf00171665.

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41

Feige, Uriel, and Orly Yahalom. "On the complexity of finding balanced oneway cuts." Information Processing Letters 87, no. 1 (2003): 1–5. http://dx.doi.org/10.1016/s0020-0190(03)00251-5.

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42

Skylaris, Chris-Kriton, Peter D. Haynes, Arash A. Mostofi, and Mike C. Payne. "Using ONETEP for accurate and efficient density functional calculations." Journal of Physics: Condensed Matter 17, no. 37 (2005): 5757–69. http://dx.doi.org/10.1088/0953-8984/17/37/012.

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43

Westbrook, John, John Markley, Haruki, Sameer Velankar, and Stephen Burley. "PDBx/mmCIF: the foundation for the wwPDB OneDep system." Acta Crystallographica Section A Foundations and Advances 73, a2 (2017): C1361. http://dx.doi.org/10.1107/s2053273317082146.

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44

Demesy, Guillaume, André Nicolet, Frédéric Zolla, and Christophe Geuzaine. "Modélisation par la méthode des éléments finis avec onelab." Photoniques, no. 100 (January 2020): 40–45. http://dx.doi.org/10.1051/photon/202010040.

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Nous présentons ici le logiciel open source ONELAB de modélisation numérique par la méthode des éléments finis pour les applications photoniques. Nous illustrons à l’aide de quelques exemples une bibliothèque évolutive de modèles paramétrables couvrant une large gamme de dispositifs rencontrés en nanophotonique. Celle-ci permet d’aborder facilement la simulation d’applications réalistes tout en permettant au spécialiste de développer ses propres modèles avancés.
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45

Haynes, P. D., A. A. Mostof, C.-K. Skylaris, and M. C. Payne. "ONETEP: linear-scaling density-functional theory with plane-waves." Journal of Physics: Conference Series 26 (February 22, 2006): 143–48. http://dx.doi.org/10.1088/1742-6596/26/1/034.

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46

Le, Chap T. "On Testing a Trend in Means in Oneway Layout." Biometrical Journal 29, no. 2 (1987): 173–80. http://dx.doi.org/10.1002/bimj.4710290211.

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47

Hlungwani, Donald, Raesibe Sylvia Ledwaba, and Phuti Esrom Ngoepe. "First-Principles Study on the Effect of Lithiation in Spinel LixMn2O4 (0 ≤ x ≤ 1) Structure: Calibration of CASTEP and ONETEP Simulation Codes." Materials 15, no. 16 (2022): 5678. http://dx.doi.org/10.3390/ma15165678.

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Lithium–manganese–oxide (Li-Mn-O) spinel is among the promising and economically viable, high-energy density cathode materials for enhancing the performance of lithium-ion batteries. However, its commercialization is hindered by its poor cyclic performance. In computational modelling, pivotal in-depth understanding of material behaviour and properties is sizably propelled by advancements in computational methods. Hence, the current work compares traditional DFT (CASTEP) and linear-scaling DFT (ONETEP) in a LiMn2O4 electronic property study to pave way for large-scale DFT calculations in a quest to improve its electrochemical properties. The metallic behaviour of LixMn2O4 (0.25 ≤ x ≤ 1) and Li2Mn2O4 was correctly determined by both CASTEP and ONETEP code in line with experiments. Furthermore, OCV during the discharge cycle deduced by both codes is in good accordance and is between 5 V and 2.5 V in the composition range of 0 ≤ x ≤ 1. Moreover, the scaling of the ONETEP code was performed at South Africa’s CHPC to provide guidelines on more productive large-scale ONETEP runs. Substantial total computing time can be saved by systematically adding the number of processors with the growing structure size. The study also substantiates that true linear scaling of the ONETEP code is achieved by a systematic truncation of the density kernel.
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48

WADA, HIDEYOSHI. "Myocardinal protection at this facility.Blood Cardioplegia by a oneway system." Japanese journal of extra-corporeal technology 19, no. 1 (1993): 98–100. http://dx.doi.org/10.7130/hokkaidoshakai.19.98.

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49

Gutmanas, Aleksandras, John L. Markley, Haruki Nakamura, Stephen K. Burley, and Sameer Velankar. "OneDep: wwPDB system for deposition, biocuration, validation of macromolecular structures." Acta Crystallographica Section A Foundations and Advances 73, a2 (2017): C293. http://dx.doi.org/10.1107/s2053273317092804.

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50

Bell, Robert A., Simon M. M. Dubois, Michael C. Payne, and Arash A. Mostofi. "Electronic transport calculations in the onetep code: Implementation and applications." Computer Physics Communications 193 (August 2015): 78–88. http://dx.doi.org/10.1016/j.cpc.2015.04.002.

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