Articles with "leo" as a keyword



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Development of gelatin/chitosan film incorporated with lemon essential oil with antioxidant properties

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Published in 2020 at "Journal of Food Measurement and Characterization"

DOI: 10.1007/s11694-020-00547-5

Abstract: This study aims to evaluate the physical, chemical, and mechanical properties of gelatin/chitosan (Ge/Ch) films enriched with different ratios of lemon essential oil (LEO; 0.25–0.50–0.75–1%) and Ge/Ch (60%/40%) based film without LEO as control. Total… read more here.

Keywords: leo; essential oil; gelatin chitosan; film incorporated ... See more keywords
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Autonomous orbit determination for formations of Cubesats beyond LEO

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Published in 2018 at "Acta Astronautica"

DOI: 10.1016/j.actaastro.2018.01.045

Abstract: Abstract This paper investigates the use of the Time Of Arrival (TOA) and Doppler shift to allow a small formation of CubeSats to navigate beyond low Earth orbit (LEO). The idea is to use a… read more here.

Keywords: leo; autonomous orbit; formations cubesats; orbit determination ... See more keywords
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MDM: A flight mission to observe materials degradation in-situ on satellite in super low Earth orbit

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Published in 2021 at "Acta Astronautica"

DOI: 10.1016/j.actaastro.2020.11.048

Abstract: Abstract Satellites in low Earth orbit (LEO) are subject to several environmental factors, atomic oxygen (AO) having the greatest effect on space materials, especially polymers. Recently, the possibility of utilizing orbits at an altitude lower… read more here.

Keywords: low earth; leo; space; earth orbit ... See more keywords
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Characterizing the scent and chemical composition of Panthera leo marking fluid using solid-phase microextraction and multidimensional gas chromatography–mass spectrometry-olfactometry

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Published in 2017 at "Scientific Reports"

DOI: 10.1038/s41598-017-04973-2

Abstract: Lions (Panthera leo) use chemical signaling to indicate health, reproductive status, and territorial ownership. To date, no study has reported on both scent and composition of marking fluid (MF) from P. leo. The objectives of… read more here.

Keywords: leo; panthera leo; multidimensional gas; phase microextraction ... See more keywords
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Spaceborne Azimuth Multichannel BiSAR With Geosynchronous Transmitter and LEO Receiver: High-Resolution Wide-Swath Image Formation

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Published in 2019 at "IEEE Access"

DOI: 10.1109/access.2019.2953767

Abstract: Spaceborne azimuth multichannel bistatic synthetic aperture radar (AMC-BiSAR) system employed inclined geosynchronous (GEO) transmitter and low-Earth-orbit (LEO) receiver is capable of providing a vast area of surveillance and fine spatial resolution, which presents great potentials… read more here.

Keywords: resolution; spaceborne azimuth; amc; leo ... See more keywords
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LEO Satellites in 5G and Beyond Networks: A Review From a Standardization Perspective

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Published in 2022 at "IEEE Access"

DOI: 10.1109/access.2022.3162243

Abstract: Low Earth Orbit (LEO) Satellite Network (SatNet) with their mega-constellations are expected to play a key role in providing ubiquitous Internet and communications services in the future. LEO SatNets will provide wide-area coverage and support… read more here.

Keywords: standardization; integration satnets; beyond networks; leo satellites ... See more keywords
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Feasibility of Using Beam Steering to Mitigate Ku-Band LEO-to-GEO Interference

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Published in 2022 at "IEEE Access"

DOI: 10.1109/access.2022.3190381

Abstract: Low-Earth orbiting (LEO) satellites now hold promise to provide broadband service anywhere in the world, but they must share the radio spectrum with geosynchronous Earth-orbiting (GEO) satellites. The United Nations International Telecommunications Union (ITU) and… read more here.

Keywords: beam steering; leo; interference; geo ... See more keywords
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Fast Geolocation Solution and Accuracy Analysis for Bistatic InSAR Configuration of Geostationary Transmitter With LEO Receivers

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Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"

DOI: 10.1109/lgrs.2021.3084688

Abstract: To obtain digital elevation model (DEM) data through spaceborne interferometric synthetic aperture radar (InSAR) technology, the solution of nonlinear InSAR geolocation equations is one of the most important steps. On one hand, Newton iterative method… read more here.

Keywords: insar; leo; geometry; geolocation ... See more keywords
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New Bridge to Cloud: An Ultra-Dense LEO Assisted Green Computation Offloading Approach

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Published in 2023 at "IEEE Transactions on Green Communications and Networking"

DOI: 10.1109/tgcn.2022.3208819

Abstract: Mobile edge computing and cloud computing have emerged as effective technologies to alleviate the increasing computational workload of mobile devices. As a promising enabling 6G technology, the ultra-dense (UD) low earth orbit (LEO) satellite network… read more here.

Keywords: computation; new bridge; leo; bridge cloud ... See more keywords
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Analysis and Empirical Modeling of Ionospheric Horizontal Gradients in the TEC Mapping Onboard LEO Satellites

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Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"

DOI: 10.1109/tgrs.2022.3188336

Abstract: The ionospheric mapping function (IMF) is fundamental in retrieving total electron content (TEC) from observations onboard low earth orbiting (LEO) satellites, as well as the receiver differential code bias (DCB) estimation. Most IMFs apply the… read more here.

Keywords: ionospheric horizontal; elevation angles; leo; leo satellites ... See more keywords
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Ultra-Dense LEO: Integrating Terrestrial-Satellite Networks Into 5G and Beyond for Data Offloading

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Published in 2019 at "IEEE Transactions on Wireless Communications"

DOI: 10.1109/twc.2018.2875980

Abstract: In this paper, we propose a terrestrial-satellite network (TSN) architecture to integrate the ultra-dense low earth orbit (LEO) networks and the terrestrial networks to achieve efficient data offloading. In TSN, each ground user can access… read more here.

Keywords: data offloading; ultra dense; leo; terrestrial satellite ... See more keywords