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   Articles with "leo" as a keyword



Impact of LEO configuration on GPS precise orbit determination with un-differenced ambiguity resolution

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recommendations! Published in 2024 at "GPS Solutions"

DOI: 10.1007/s10291-024-01791-8

Abstract: Un-differenced (UD) ambiguity resolution (AR) is widely applied since it can avoid wrong-fixing and fix the most of ambiguities. However, in the precise orbit determination (POD) solution using ground network only, the accuracy of float… read more here.

Keywords: precise orbit; leo; ambiguity resolution; leo satellites ... See more keywords
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Development of gelatin/chitosan film incorporated with lemon essential oil with antioxidant properties

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recommendations! 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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recommendations! 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

MDM: A flight mission to observe materials degradation in-situ on satellite in super low Earth orbit

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recommendations! 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

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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recommendations! 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

Lemongrass essential oil in silage and as a feed additive has limited effect on animals feed intake and rumen fermentation

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recommendations! Published in 2024 at "New Zealand Journal of Agricultural Research"

DOI: 10.1080/00288233.2024.2398772

Abstract: ABSTRACT This study aimed to evaluate the effects of lemongrass essential oil (LEO) addition during the ensiling and subsequent sheep feed intake, particle selection, in vitro rumen fermentation, total-tract apparent digestibility and nitrogen balance. Eight… read more here.

Keywords: leo addition; lemongrass essential; feed intake; leo ... See more keywords

Spaceborne Azimuth Multichannel BiSAR With Geosynchronous Transmitter and LEO Receiver: High-Resolution Wide-Swath Image Formation

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recommendations! 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

LEO Satellites in 5G and Beyond Networks: A Review From a Standardization Perspective

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recommendations! 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

Feasibility of Using Beam Steering to Mitigate Ku-Band LEO-to-GEO Interference

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recommendations! 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

Fast Geolocation Solution and Accuracy Analysis for Bistatic InSAR Configuration of Geostationary Transmitter With LEO Receivers

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recommendations! 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

Seamless Integration of the LoRaWAN Protocol in a LEO-Based mMTC Architecture

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recommendations! Published in 2025 at "IEEE Communications Magazine"

DOI: 10.1109/mcom.001.2400303

Abstract: The upcoming sixth-generation wireless communication standard will face significant challenges in improving communication performance and achieving new objectives, including network densification and robust broadband connectivity in urban areas. Additionally, it aims for the expansion of… read more here.

Keywords: protocol leo; architecture; seamless integration; leo ... See more keywords